[libav-commits] Remove ffmpeg.

Anton Khirnov git at libav.org
Mon Jan 23 21:08:19 CET 2012


Module: libav
Branch: master
Commit: 0fec2cb15cc6ff1fcc724c774ec36abadcb7b6ad

Author:    Anton Khirnov <anton at khirnov.net>
Committer: Anton Khirnov <anton at khirnov.net>
Date:      Thu Jan 12 11:12:15 2012 +0100

Remove ffmpeg.

---

 .gitignore      |    1 -
 Makefile        |    3 +-
 configure       |    3 -
 doc/ffmpeg.texi | 1091 --------------
 ffmpeg.c        | 4415 -------------------------------------------------------
 5 files changed, 1 insertions(+), 5512 deletions(-)

diff --git a/.gitignore b/.gitignore
index 2118a51..3508635 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,7 +11,6 @@ doc/*.1
 doc/*.html
 doc/*.pod
 doxy
-ffmpeg
 avconv
 avplay
 avprobe
diff --git a/Makefile b/Makefile
index 19b8df4..d1b55ba 100644
--- a/Makefile
+++ b/Makefile
@@ -52,7 +52,6 @@ COMPILE_S = $(call COMPILE,AS)
 
 %.c %.h: TAG = GEN
 
-PROGS-$(CONFIG_FFMPEG)   += ffmpeg
 PROGS-$(CONFIG_AVCONV)   += avconv
 PROGS-$(CONFIG_AVPLAY)   += avplay
 PROGS-$(CONFIG_AVPROBE)  += avprobe
@@ -65,7 +64,7 @@ HOSTPROGS  := $(TESTTOOLS:%=tests/%)
 TOOLS       = qt-faststart trasher
 TOOLS-$(CONFIG_ZLIB) += cws2fws
 
-BASENAMES   = ffmpeg avconv avplay avprobe avserver
+BASENAMES   = avconv avplay avprobe avserver
 ALLPROGS    = $(BASENAMES:%=%$(EXESUF))
 ALLMANPAGES = $(BASENAMES:%=%.1)
 
diff --git a/configure b/configure
index ad7d9d4..aff8894 100755
--- a/configure
+++ b/configure
@@ -80,7 +80,6 @@ Configuration options:
   --enable-nonfree         allow use of nonfree code, the resulting libs
                            and binaries will be unredistributable [no]
   --disable-doc            do not build documentation
-  --disable-ffmpeg         disable ffmpeg build
   --disable-avconv         disable avconv build
   --disable-avplay         disable avplay build
   --disable-avprobe        disable avprobe build
@@ -911,7 +910,6 @@ PROGRAM_LIST="
     avplay
     avprobe
     avserver
-    ffmpeg
 "
 
 CONFIG_LIST="
@@ -1536,7 +1534,6 @@ avplay_select="rdft"
 avprobe_deps="avcodec avformat"
 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
 avserver_extralibs='$ldl'
-ffmpeg_deps="avcodec avformat swscale"
 
 doc_deps="texi2html"
 
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
deleted file mode 100644
index 968d4f6..0000000
--- a/doc/ffmpeg.texi
+++ /dev/null
@@ -1,1091 +0,0 @@
-\input texinfo @c -*- texinfo -*-
-
- at settitle ffmpeg Documentation
- at titlepage
- at center @titlefont{ffmpeg Documentation}
- at end titlepage
-
- at top
-
- at contents
-
- at chapter Synopsis
-
-The generic syntax is:
-
- at example
- at c man begin SYNOPSIS
-ffmpeg [[infile options][@option{-i} @var{infile}]]... @{[outfile options] @var{outfile}@}...
- at c man end
- at end example
-
- at chapter Description
- at c man begin DESCRIPTION
-
-ffmpeg is a very fast video and audio converter that can also grab from
-a live audio/video source. It can also convert between arbitrary sample
-rates and resize video on the fly with a high quality polyphase filter.
-
-The command line interface is designed to be intuitive, in the sense
-that ffmpeg tries to figure out all parameters that can possibly be
-derived automatically. You usually only have to specify the target
-bitrate you want.
-
-As a general rule, options are applied to the next specified
-file. Therefore, order is important, and you can have the same
-option on the command line multiple times. Each occurrence is
-then applied to the next input or output file.
-
- at itemize
- at item
-To set the video bitrate of the output file to 64kbit/s:
- at example
-ffmpeg -i input.avi -b 64k output.avi
- at end example
-
- at item
-To force the frame rate of the output file to 24 fps:
- at example
-ffmpeg -i input.avi -r 24 output.avi
- at end example
-
- at item
-To force the frame rate of the input file (valid for raw formats only)
-to 1 fps and the frame rate of the output file to 24 fps:
- at example
-ffmpeg -r 1 -i input.m2v -r 24 output.avi
- at end example
- at end itemize
-
-The format option may be needed for raw input files.
-
-By default ffmpeg tries to convert as losslessly as possible: It
-uses the same audio and video parameters for the outputs as the one
-specified for the inputs.
-
- at c man end DESCRIPTION
-
- at chapter Options
- at c man begin OPTIONS
-
- at include avtools-common-opts.texi
-
- at section Main options
-
- at table @option
-
- at item -f @var{fmt}
-Force format.
-
- at item -i @var{filename}
-input file name
-
- at item -y
-Overwrite output files.
-
- at item -t @var{duration}
-Restrict the transcoded/captured video sequence
-to the duration specified in seconds.
- at code{hh:mm:ss[.xxx]} syntax is also supported.
-
- at item -fs @var{limit_size}
-Set the file size limit.
-
- at item -ss @var{position}
-Seek to given time position in seconds.
- at code{hh:mm:ss[.xxx]} syntax is also supported.
-
- at item -itsoffset @var{offset}
-Set the input time offset in seconds.
- at code{[-]hh:mm:ss[.xxx]} syntax is also supported.
-This option affects all the input files that follow it.
-The offset is added to the timestamps of the input files.
-Specifying a positive offset means that the corresponding
-streams are delayed by 'offset' seconds.
-
- at item -timestamp @var{time}
-Set the recording timestamp in the container.
-The syntax for @var{time} is:
- at example
-now|([(YYYY-MM-DD|YYYYMMDD)[T|t| ]]((HH[:MM[:SS[.m...]]])|(HH[MM[SS[.m...]]]))[Z|z])
- at end example
-If the value is "now" it takes the current time.
-Time is local time unless 'Z' or 'z' is appended, in which case it is
-interpreted as UTC.
-If the year-month-day part is not specified it takes the current
-year-month-day.
-
- at item -metadata @var{key}=@var{value}
-Set a metadata key/value pair.
-
-For example, for setting the title in the output file:
- at example
-ffmpeg -i in.avi -metadata title="my title" out.flv
- at end example
-
- at item -v @var{number}
-Set the logging verbosity level.
-
- at item -target @var{type}
-Specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd",
-"ntsc-svcd", ... ). All the format options (bitrate, codecs,
-buffer sizes) are then set automatically. You can just type:
-
- at example
-ffmpeg -i myfile.avi -target vcd /tmp/vcd.mpg
- at end example
-
-Nevertheless you can specify additional options as long as you know
-they do not conflict with the standard, as in:
-
- at example
-ffmpeg -i myfile.avi -target vcd -bf 2 /tmp/vcd.mpg
- at end example
-
- at item -dframes @var{number}
-Set the number of data frames to record.
-
- at item -scodec @var{codec}
-Force subtitle codec ('copy' to copy stream).
-
- at item -newsubtitle
-Add a new subtitle stream to the current output stream.
-
- at item -slang @var{code}
-Set the ISO 639 language code (3 letters) of the current subtitle stream.
-
- at end table
-
- at section Video Options
-
- at table @option
- at item -vframes @var{number}
-Set the number of video frames to record.
- at item -r @var{fps}
-Set frame rate (Hz value, fraction or abbreviation), (default = 25).
- at item -s @var{size}
-Set frame size. The format is @samp{wxh} (avserver default = 160x128, ffmpeg default = same as source).
-The following abbreviations are recognized:
- at table @samp
- at item sqcif
-128x96
- at item qcif
-176x144
- at item cif
-352x288
- at item 4cif
-704x576
- at item 16cif
-1408x1152
- at item qqvga
-160x120
- at item qvga
-320x240
- at item vga
-640x480
- at item svga
-800x600
- at item xga
-1024x768
- at item uxga
-1600x1200
- at item qxga
-2048x1536
- at item sxga
-1280x1024
- at item qsxga
-2560x2048
- at item hsxga
-5120x4096
- at item wvga
-852x480
- at item wxga
-1366x768
- at item wsxga
-1600x1024
- at item wuxga
-1920x1200
- at item woxga
-2560x1600
- at item wqsxga
-3200x2048
- at item wquxga
-3840x2400
- at item whsxga
-6400x4096
- at item whuxga
-7680x4800
- at item cga
-320x200
- at item ega
-640x350
- at item hd480
-852x480
- at item hd720
-1280x720
- at item hd1080
-1920x1080
- at end table
-
- at item -aspect @var{aspect}
-Set the video display aspect ratio specified by @var{aspect}.
-
- at var{aspect} can be a floating point number string, or a string of the
-form @var{num}:@var{den}, where @var{num} and @var{den} are the
-numerator and denominator of the aspect ratio. For example "4:3",
-"16:9", "1.3333", and "1.7777" are valid argument values.
-
- at item -croptop @var{size}
- at item -cropbottom @var{size}
- at item -cropleft @var{size}
- at item -cropright @var{size}
-All the crop options have been removed. Use -vf
-crop=width:height:x:y instead.
-
- at item -padtop @var{size}
- at item -padbottom @var{size}
- at item -padleft @var{size}
- at item -padright @var{size}
- at item -padcolor @var{hex_color}
-All the pad options have been removed. Use -vf
-pad=width:height:x:y:color instead.
- at item -vn
-Disable video recording.
- at item -bt @var{tolerance}
-Set video bitrate tolerance (in bits, default 4000k).
-Has a minimum value of: (target_bitrate/target_framerate).
-In 1-pass mode, bitrate tolerance specifies how far ratecontrol is
-willing to deviate from the target average bitrate value. This is
-not related to min/max bitrate. Lowering tolerance too much has
-an adverse effect on quality.
- at item -maxrate @var{bitrate}
-Set max video bitrate (in bit/s).
-Requires -bufsize to be set.
- at item -minrate @var{bitrate}
-Set min video bitrate (in bit/s).
-Most useful in setting up a CBR encode:
- at example
-ffmpeg -i myfile.avi -b 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k out.m2v
- at end example
-It is of little use elsewise.
- at item -bufsize @var{size}
-Set video buffer verifier buffer size (in bits).
- at item -vcodec @var{codec}
-Force video codec to @var{codec}. Use the @code{copy} special value to
-tell that the raw codec data must be copied as is.
- at item -sameq
-Use same quantizer as source (implies VBR).
-
- at item -pass @var{n}
-Select the pass number (1 or 2). It is used to do two-pass
-video encoding. The statistics of the video are recorded in the first
-pass into a log file (see also the option -passlogfile),
-and in the second pass that log file is used to generate the video
-at the exact requested bitrate.
-On pass 1, you may just deactivate audio and set output to null,
-examples for Windows and Unix:
- at example
-ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y NUL
-ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y /dev/null
- at end example
-
- at item -passlogfile @var{prefix}
-Set two-pass log file name prefix to @var{prefix}, the default file name
-prefix is ``ffmpeg2pass''. The complete file name will be
- at file{PREFIX-N.log}, where N is a number specific to the output
-stream.
-
- at item -newvideo
-Add a new video stream to the current output stream.
-
- at item -vlang @var{code}
-Set the ISO 639 language code (3 letters) of the current video stream.
-
- at item -vf @var{filter_graph}
- at var{filter_graph} is a description of the filter graph to apply to
-the input video.
-Use the option "-filters" to show all the available filters (including
-also sources and sinks).
-
- at end table
-
- at section Advanced Video Options
-
- at table @option
- at item -pix_fmt @var{format}
-Set pixel format. Use 'list' as parameter to show all the supported
-pixel formats.
- at item -sws_flags @var{flags}
-Set SwScaler flags.
- at item -g @var{gop_size}
-Set the group of pictures size.
- at item -intra
-Use only intra frames.
- at item -vdt @var{n}
-Discard threshold.
- at item -qscale @var{q}
-Use fixed video quantizer scale (VBR).
- at item -qmin @var{q}
-minimum video quantizer scale (VBR)
- at item -qmax @var{q}
-maximum video quantizer scale (VBR)
- at item -qdiff @var{q}
-maximum difference between the quantizer scales (VBR)
- at item -qblur @var{blur}
-video quantizer scale blur (VBR) (range 0.0 - 1.0)
- at item -qcomp @var{compression}
-video quantizer scale compression (VBR) (default 0.5).
-Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0
-
- at item -lmin @var{lambda}
-minimum video lagrange factor (VBR)
- at item -lmax @var{lambda}
-max video lagrange factor (VBR)
- at item -mblmin @var{lambda}
-minimum macroblock quantizer scale (VBR)
- at item -mblmax @var{lambda}
-maximum macroblock quantizer scale (VBR)
-
-These four options (lmin, lmax, mblmin, mblmax) use 'lambda' units,
-but you may use the QP2LAMBDA constant to easily convert from 'q' units:
- at example
-ffmpeg -i src.ext -lmax 21*QP2LAMBDA dst.ext
- at end example
-
- at item -rc_init_cplx @var{complexity}
-initial complexity for single pass encoding
- at item -b_qfactor @var{factor}
-qp factor between P- and B-frames
- at item -i_qfactor @var{factor}
-qp factor between P- and I-frames
- at item -b_qoffset @var{offset}
-qp offset between P- and B-frames
- at item -i_qoffset @var{offset}
-qp offset between P- and I-frames
- at item -rc_eq @var{equation}
-Set rate control equation (see section "Expression Evaluation")
-(default = @code{tex^qComp}).
-
-When computing the rate control equation expression, besides the
-standard functions defined in the section "Expression Evaluation", the
-following functions are available:
- at table @var
- at item bits2qp(bits)
- at item qp2bits(qp)
- at end table
-
-and the following constants are available:
- at table @var
- at item iTex
- at item pTex
- at item tex
- at item mv
- at item fCode
- at item iCount
- at item mcVar
- at item var
- at item isI
- at item isP
- at item isB
- at item avgQP
- at item qComp
- at item avgIITex
- at item avgPITex
- at item avgPPTex
- at item avgBPTex
- at item avgTex
- at end table
-
- at item -rc_override @var{override}
-rate control override for specific intervals
- at item -me_method @var{method}
-Set motion estimation method to @var{method}.
-Available methods are (from lowest to best quality):
- at table @samp
- at item zero
-Try just the (0, 0) vector.
- at item phods
- at item log
- at item x1
- at item hex
- at item umh
- at item epzs
-(default method)
- at item full
-exhaustive search (slow and marginally better than epzs)
- at end table
-
- at item -dct_algo @var{algo}
-Set DCT algorithm to @var{algo}. Available values are:
- at table @samp
- at item 0
-FF_DCT_AUTO (default)
- at item 1
-FF_DCT_FASTINT
- at item 2
-FF_DCT_INT
- at item 3
-FF_DCT_MMX
- at item 4
-FF_DCT_MLIB
- at item 5
-FF_DCT_ALTIVEC
- at end table
-
- at item -idct_algo @var{algo}
-Set IDCT algorithm to @var{algo}. Available values are:
- at table @samp
- at item 0
-FF_IDCT_AUTO (default)
- at item 1
-FF_IDCT_INT
- at item 2
-FF_IDCT_SIMPLE
- at item 3
-FF_IDCT_SIMPLEMMX
- at item 4
-FF_IDCT_LIBMPEG2MMX
- at item 5
-FF_IDCT_PS2
- at item 6
-FF_IDCT_MLIB
- at item 7
-FF_IDCT_ARM
- at item 8
-FF_IDCT_ALTIVEC
- at item 9
-FF_IDCT_SH4
- at item 10
-FF_IDCT_SIMPLEARM
- at end table
-
- at item -er @var{n}
-Set error resilience to @var{n}.
- at table @samp
- at item 1
-FF_ER_CAREFUL (default)
- at item 2
-FF_ER_COMPLIANT
- at item 3
-FF_ER_AGGRESSIVE
- at item 4
-FF_ER_EXPLODE
- at end table
-
- at item -ec @var{bit_mask}
-Set error concealment to @var{bit_mask}. @var{bit_mask} is a bit mask of
-the following values:
- at table @samp
- at item 1
-FF_EC_GUESS_MVS (default = enabled)
- at item 2
-FF_EC_DEBLOCK (default = enabled)
- at end table
-
- at item -bf @var{frames}
-Use 'frames' B-frames (supported for MPEG-1, MPEG-2 and MPEG-4).
- at item -mbd @var{mode}
-macroblock decision
- at table @samp
- at item 0
-FF_MB_DECISION_SIMPLE: Use mb_cmp (cannot change it yet in ffmpeg).
- at item 1
-FF_MB_DECISION_BITS: Choose the one which needs the fewest bits.
- at item 2
-FF_MB_DECISION_RD: rate distortion
- at end table
-
- at item -4mv
-Use four motion vector by macroblock (MPEG-4 only).
- at item -part
-Use data partitioning (MPEG-4 only).
- at item -bug @var{param}
-Work around encoder bugs that are not auto-detected.
- at item -strict @var{strictness}
-How strictly to follow the standards.
- at item -aic
-Enable Advanced intra coding (h263+).
- at item -umv
-Enable Unlimited Motion Vector (h263+)
-
- at item -deinterlace
-Deinterlace pictures.
- at item -ilme
-Force interlacing support in encoder (MPEG-2 and MPEG-4 only).
-Use this option if your input file is interlaced and you want
-to keep the interlaced format for minimum losses.
-The alternative is to deinterlace the input stream with
- at option{-deinterlace}, but deinterlacing introduces losses.
- at item -psnr
-Calculate PSNR of compressed frames.
- at item -vstats
-Dump video coding statistics to @file{vstats_HHMMSS.log}.
- at item -vstats_file @var{file}
-Dump video coding statistics to @var{file}.
- at item -top @var{n}
-top=1/bottom=0/auto=-1 field first
- at item -dc @var{precision}
-Intra_dc_precision.
- at item -vtag @var{fourcc/tag}
-Force video tag/fourcc.
- at item -qphist
-Show QP histogram.
- at item -vbsf @var{bitstream_filter}
-Bitstream filters available are "dump_extra", "remove_extra", "noise", "h264_mp4toannexb", "imxdump", "mjpegadump", "mjpeg2jpeg".
- at example
-ffmpeg -i h264.mp4 -vcodec copy -vbsf h264_mp4toannexb -an out.h264
- at end example
- at item -force_key_frames @var{time}[, at var{time}...]
-Force key frames at the specified timestamps, more precisely at the first
-frames after each specified time.
-This option can be useful to ensure that a seek point is present at a
-chapter mark or any other designated place in the output file.
-The timestamps must be specified in ascending order.
- at end table
-
- at section Audio Options
-
- at table @option
- at item -aframes @var{number}
-Set the number of audio frames to record.
- at item -ar @var{freq}
-Set the audio sampling frequency. For output streams it is set by
-default to the frequency of the corresponding input stream. For input
-streams this option only makes sense for audio grabbing devices and raw
-demuxers and is mapped to the corresponding demuxer options.
- at item -aq @var{q}
-Set the audio quality (codec-specific, VBR).
- at item -ac @var{channels}
-Set the number of audio channels. For output streams it is set by
-default to the number of input audio channels. For input streams
-this option only makes sense for audio grabbing devices and raw demuxers
-and is mapped to the corresponding demuxer options.
- at item -an
-Disable audio recording.
- at item -acodec @var{codec}
-Force audio codec to @var{codec}. Use the @code{copy} special value to
-specify that the raw codec data must be copied as is.
- at item -newaudio
-Add a new audio track to the output file. If you want to specify parameters,
-do so before @code{-newaudio} (@code{-acodec}, @code{-ab}, etc..).
-
-Mapping will be done automatically, if the number of output streams is equal to
-the number of input streams, else it will pick the first one that matches. You
-can override the mapping using @code{-map} as usual.
-
-Example:
- at example
-ffmpeg -i file.mpg -vcodec copy -acodec ac3 -ab 384k test.mpg -acodec mp2 -ab 192k -newaudio
- at end example
- at item -alang @var{code}
-Set the ISO 639 language code (3 letters) of the current audio stream.
- at end table
-
- at section Advanced Audio options:
-
- at table @option
- at item -atag @var{fourcc/tag}
-Force audio tag/fourcc.
- at item -audio_service_type @var{type}
-Set the type of service that the audio stream contains.
- at table @option
- at item ma
-Main Audio Service (default)
- at item ef
-Effects
- at item vi
-Visually Impaired
- at item hi
-Hearing Impaired
- at item di
-Dialogue
- at item co
-Commentary
- at item em
-Emergency
- at item vo
-Voice Over
- at item ka
-Karaoke
- at end table
- at item -absf @var{bitstream_filter}
-Bitstream filters available are "dump_extra", "remove_extra", "noise", "mp3comp", "mp3decomp".
- at end table
-
- at section Subtitle options:
-
- at table @option
- at item -scodec @var{codec}
-Force subtitle codec ('copy' to copy stream).
- at item -newsubtitle
-Add a new subtitle stream to the current output stream.
- at item -slang @var{code}
-Set the ISO 639 language code (3 letters) of the current subtitle stream.
- at item -sn
-Disable subtitle recording.
- at item -sbsf @var{bitstream_filter}
-Bitstream filters available are "mov2textsub", "text2movsub".
- at example
-ffmpeg -i file.mov -an -vn -sbsf mov2textsub -scodec copy -f rawvideo sub.txt
- at end example
- at end table
-
- at section Audio/Video grab options
-
- at table @option
- at item -vc @var{channel}
-Set video grab channel (DV1394 only).
- at item -tvstd @var{standard}
-Set television standard (NTSC, PAL (SECAM)).
- at item -isync
-Synchronize read on input.
- at end table
-
- at section Advanced options
-
- at table @option
- at item -map @var{input_file_id}. at var{input_stream_id}[:@var{sync_file_id}. at var{sync_stream_id}]
-
-Designate an input stream as a source for the output file. Each input
-stream is identified by the input file index @var{input_file_id} and
-the input stream index @var{input_stream_id} within the input
-file. Both indexes start at 0. If specified,
- at var{sync_file_id}. at var{sync_stream_id} sets which input stream
-is used as a presentation sync reference.
-
-The @code{-map} options must be specified just after the output file.
-If any @code{-map} options are used, the number of @code{-map} options
-on the command line must match the number of streams in the output
-file. The first @code{-map} option on the command line specifies the
-source for output stream 0, the second @code{-map} option specifies
-the source for output stream 1, etc.
-
-For example, if you have two audio streams in the first input file,
-these streams are identified by "0.0" and "0.1". You can use
- at code{-map} to select which stream to place in an output file. For
-example:
- at example
-ffmpeg -i INPUT out.wav -map 0.1
- at end example
-will map the input stream in @file{INPUT} identified by "0.1" to
-the (single) output stream in @file{out.wav}.
-
-For example, to select the stream with index 2 from input file
- at file{a.mov} (specified by the identifier "0.2"), and stream with
-index 6 from input @file{b.mov} (specified by the identifier "1.6"),
-and copy them to the output file @file{out.mov}:
- at example
-ffmpeg -i a.mov -i b.mov -vcodec copy -acodec copy out.mov -map 0.2 -map 1.6
- at end example
-
-To add more streams to the output file, you can use the
- at code{-newaudio}, @code{-newvideo}, @code{-newsubtitle} options.
-
- at item -map_meta_data @var{outfile}[, at var{metadata}]:@var{infile}[, at var{metadata}]
-Deprecated, use @var{-map_metadata} instead.
-
- at item -map_metadata @var{outfile}[, at var{metadata}]:@var{infile}[, at var{metadata}]
-Set metadata information of @var{outfile} from @var{infile}. Note that those
-are file indices (zero-based), not filenames.
-Optional @var{metadata} parameters specify, which metadata to copy - (g)lobal
-(i.e. metadata that applies to the whole file), per-(s)tream, per-(c)hapter or
-per-(p)rogram. All metadata specifiers other than global must be followed by the
-stream/chapter/program number. If metadata specifier is omitted, it defaults to
-global.
-
-By default, global metadata is copied from the first input file to all output files,
-per-stream and per-chapter metadata is copied along with streams/chapters. These
-default mappings are disabled by creating any mapping of the relevant type. A negative
-file index can be used to create a dummy mapping that just disables automatic copying.
-
-For example to copy metadata from the first stream of the input file to global metadata
-of the output file:
- at example
-ffmpeg -i in.ogg -map_metadata 0:0,s0 out.mp3
- at end example
- at item -map_chapters @var{outfile}:@var{infile}
-Copy chapters from @var{infile} to @var{outfile}. If no chapter mapping is specified,
-then chapters are copied from the first input file with at least one chapter to all
-output files. Use a negative file index to disable any chapter copying.
- at item -debug
-Print specific debug info.
- at item -benchmark
-Show benchmarking information at the end of an encode.
-Shows CPU time used and maximum memory consumption.
-Maximum memory consumption is not supported on all systems,
-it will usually display as 0 if not supported.
- at item -dump
-Dump each input packet.
- at item -hex
-When dumping packets, also dump the payload.
- at item -bitexact
-Only use bit exact algorithms (for codec testing).
- at item -ps @var{size}
-Set RTP payload size in bytes.
- at item -re
-Read input at native frame rate. Mainly used to simulate a grab device.
- at item -loop_input
-Loop over the input stream. Currently it works only for image
-streams. This option is used for automatic AVserver testing.
-This option is deprecated, use -loop.
- at item -loop_output @var{number_of_times}
-Repeatedly loop output for formats that support looping such as animated GIF
-(0 will loop the output infinitely).
-This option is deprecated, use -loop.
- at item -threads @var{count}
-Thread count.
- at item -vsync @var{parameter}
-Video sync method.
-
- at table @option
- at item 0
-Each frame is passed with its timestamp from the demuxer to the muxer.
- at item 1
-Frames will be duplicated and dropped to achieve exactly the requested
-constant framerate.
- at item 2
-Frames are passed through with their timestamp or dropped so as to
-prevent 2 frames from having the same timestamp.
- at item -1
-Chooses between 1 and 2 depending on muxer capabilities. This is the
-default method.
- at end table
-
-With -map you can select from which stream the timestamps should be
-taken. You can leave either video or audio unchanged and sync the
-remaining stream(s) to the unchanged one.
-
- at item -async @var{samples_per_second}
-Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps,
-the parameter is the maximum samples per second by which the audio is changed.
--async 1 is a special case where only the start of the audio stream is corrected
-without any later correction.
- at item -copyts
-Copy timestamps from input to output.
- at item -copytb
-Copy input stream time base from input to output when stream copying.
- at item -shortest
-Finish encoding when the shortest input stream ends.
- at item -dts_delta_threshold
-Timestamp discontinuity delta threshold.
- at item -muxdelay @var{seconds}
-Set the maximum demux-decode delay.
- at item -muxpreload @var{seconds}
-Set the initial demux-decode delay.
- at item -streamid @var{output-stream-index}:@var{new-value}
-Assign a new stream-id value to an output stream. This option should be
-specified prior to the output filename to which it applies.
-For the situation where multiple output files exist, a streamid
-may be reassigned to a different value.
-
-For example, to set the stream 0 PID to 33 and the stream 1 PID to 36 for
-an output mpegts file:
- at example
-ffmpeg -i infile -streamid 0:33 -streamid 1:36 out.ts
- at end example
- at end table
-
- at section Preset files
-
-A preset file contains a sequence of @var{option}=@var{value} pairs,
-one for each line, specifying a sequence of options which would be
-awkward to specify on the command line. Lines starting with the hash
-('#') character are ignored and are used to provide comments. Check
-the @file{presets} directory in the Libav source tree for examples.
-
-Preset files are specified with the @code{vpre}, @code{apre},
- at code{spre}, and @code{fpre} options. The @code{fpre} option takes the
-filename of the preset instead of a preset name as input and can be
-used for any kind of codec. For the @code{vpre}, @code{apre}, and
- at code{spre} options, the options specified in a preset file are
-applied to the currently selected codec of the same type as the preset
-option.
-
-The argument passed to the @code{vpre}, @code{apre}, and @code{spre}
-preset options identifies the preset file to use according to the
-following rules:
-
-First ffmpeg searches for a file named @var{arg}.ffpreset in the
-directories @file{$AVCONV_DATADIR} (if set), and @file{$HOME/.avconv}, and in
-the datadir defined at configuration time (usually @file{PREFIX/share/avconv})
-in that order. For example, if the argument is @code{libx264-max}, it will
-search for the file @file{libx264-max.ffpreset}.
-
-If no such file is found, then ffmpeg will search for a file named
- at var{codec_name}- at var{arg}.ffpreset in the above-mentioned
-directories, where @var{codec_name} is the name of the codec to which
-the preset file options will be applied. For example, if you select
-the video codec with @code{-vcodec libx264} and use @code{-vpre max},
-then it will search for the file @file{libx264-max.ffpreset}.
- at c man end
-
- at chapter Tips
- at c man begin TIPS
-
- at itemize
- at item
-For streaming at very low bitrate application, use a low frame rate
-and a small GOP size. This is especially true for RealVideo where
-the Linux player does not seem to be very fast, so it can miss
-frames. An example is:
-
- at example
-ffmpeg -g 3 -r 3 -t 10 -b 50k -s qcif -f rv10 /tmp/b.rm
- at end example
-
- at item
-The parameter 'q' which is displayed while encoding is the current
-quantizer. The value 1 indicates that a very good quality could
-be achieved. The value 31 indicates the worst quality. If q=31 appears
-too often, it means that the encoder cannot compress enough to meet
-your bitrate. You must either increase the bitrate, decrease the
-frame rate or decrease the frame size.
-
- at item
-If your computer is not fast enough, you can speed up the
-compression at the expense of the compression ratio. You can use
-'-me zero' to speed up motion estimation, and '-intra' to disable
-motion estimation completely (you have only I-frames, which means it
-is about as good as JPEG compression).
-
- at item
-To have very low audio bitrates, reduce the sampling frequency
-(down to 22050 Hz for MPEG audio, 22050 or 11025 for AC-3).
-
- at item
-To have a constant quality (but a variable bitrate), use the option
-'-qscale n' when 'n' is between 1 (excellent quality) and 31 (worst
-quality).
-
- at item
-When converting video files, you can use the '-sameq' option which
-uses the same quality factor in the encoder as in the decoder.
-It allows almost lossless encoding.
-
- at end itemize
- at c man end TIPS
-
- at chapter Examples
- at c man begin EXAMPLES
-
- at section Video and Audio grabbing
-
-If you specify the input format and device then ffmpeg can grab video
-and audio directly.
-
- at example
-ffmpeg -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 /tmp/out.mpg
- at end example
-
-Note that you must activate the right video source and channel before
-launching ffmpeg with any TV viewer such as
- at uref{http://linux.bytesex.org/xawtv/, xawtv} by Gerd Knorr. You also
-have to set the audio recording levels correctly with a
-standard mixer.
-
- at section X11 grabbing
-
-Grab the X11 display with ffmpeg via
-
- at example
-ffmpeg -f x11grab -s cif -r 25 -i :0.0 /tmp/out.mpg
- at end example
-
-0.0 is display.screen number of your X11 server, same as
-the DISPLAY environment variable.
-
- at example
-ffmpeg -f x11grab -s cif -r 25 -i :0.0+10,20 /tmp/out.mpg
- at end example
-
-10 is the x-offset and 20 the y-offset for the grabbing.
-
- at example
-ffmpeg -f x11grab -follow_mouse centered -s cif -r 25 -i :0.0 /tmp/out.mpg
- at end example
-
-The grabbing region follows the mouse pointer, which stays at the center of
-region.
-
- at example
-ffmpeg -f x11grab -follow_mouse 100 -s cif -r 25 -i :0.0 /tmp/out.mpg
- at end example
-
-Only follows when mouse pointer reaches within 100 pixels to the edge of
-region.
-
- at example
-ffmpeg -f x11grab -show_region 1 -s cif -r 25 -i :0.0+10,20 /tmp/out.mpg
- at end example
-
-The grabbing region will be indicated on screen.
-
- at example
-ffmpeg -f x11grab -follow_mouse centered -show_region 1 -s cif -r 25 -i :0.0 /tmp/out.mpg
- at end example
-
-The grabbing region indication will follow the mouse pointer.
-
-
- at section Video and Audio file format conversion
-
-Any supported file format and protocol can serve as input to ffmpeg:
-
-Examples:
- at itemize
- at item
-You can use YUV files as input:
-
- at example
-ffmpeg -i /tmp/test%d.Y /tmp/out.mpg
- at end example
-
-It will use the files:
- at example
-/tmp/test0.Y, /tmp/test0.U, /tmp/test0.V,
-/tmp/test1.Y, /tmp/test1.U, /tmp/test1.V, etc...
- at end example
-
-The Y files use twice the resolution of the U and V files. They are
-raw files, without header. They can be generated by all decent video
-decoders. You must specify the size of the image with the @option{-s} option
-if ffmpeg cannot guess it.
-
- at item
-You can input from a raw YUV420P file:
-
- at example
-ffmpeg -i /tmp/test.yuv /tmp/out.avi
- at end example
-
-test.yuv is a file containing raw YUV planar data. Each frame is composed
-of the Y plane followed by the U and V planes at half vertical and
-horizontal resolution.
-
- at item
-You can output to a raw YUV420P file:
-
- at example
-ffmpeg -i mydivx.avi hugefile.yuv
- at end example
-
- at item
-You can set several input files and output files:
-
- at example
-ffmpeg -i /tmp/a.wav -s 640x480 -i /tmp/a.yuv /tmp/a.mpg
- at end example
-
-Converts the audio file a.wav and the raw YUV video file a.yuv
-to MPEG file a.mpg.
-
- at item
-You can also do audio and video conversions at the same time:
-
- at example
-ffmpeg -i /tmp/a.wav -ar 22050 /tmp/a.mp2
- at end example
-
-Converts a.wav to MPEG audio at 22050 Hz sample rate.
-
- at item
-You can encode to several formats at the same time and define a
-mapping from input stream to output streams:
-
- at example
-ffmpeg -i /tmp/a.wav -ab 64k /tmp/a.mp2 -ab 128k /tmp/b.mp2 -map 0:0 -map 0:0
- at end example
-
-Converts a.wav to a.mp2 at 64 kbits and to b.mp2 at 128 kbits. '-map
-file:index' specifies which input stream is used for each output
-stream, in the order of the definition of output streams.
-
- at item
-You can transcode decrypted VOBs:
-
- at example
-ffmpeg -i snatch_1.vob -f avi -vcodec mpeg4 -b 800k -g 300 -bf 2 -acodec libmp3lame -ab 128k snatch.avi
- at end example
-
-This is a typical DVD ripping example; the input is a VOB file, the
-output an AVI file with MPEG-4 video and MP3 audio. Note that in this
-command we use B-frames so the MPEG-4 stream is DivX5 compatible, and
-GOP size is 300 which means one intra frame every 10 seconds for 29.97fps
-input video. Furthermore, the audio stream is MP3-encoded so you need
-to enable LAME support by passing @code{--enable-libmp3lame} to configure.
-The mapping is particularly useful for DVD transcoding
-to get the desired audio language.
-
-NOTE: To see the supported input formats, use @code{ffmpeg -formats}.
-
- at item
-You can extract images from a video, or create a video from many images:
-
-For extracting images from a video:
- at example
-ffmpeg -i foo.avi -r 1 -s WxH -f image2 foo-%03d.jpeg
- at end example
-
-This will extract one video frame per second from the video and will
-output them in files named @file{foo-001.jpeg}, @file{foo-002.jpeg},
-etc. Images will be rescaled to fit the new WxH values.
-
-If you want to extract just a limited number of frames, you can use the
-above command in combination with the -vframes or -t option, or in
-combination with -ss to start extracting from a certain point in time.
-
-For creating a video from many images:
- at example
-ffmpeg -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi
- at end example
-
-The syntax @code{foo-%03d.jpeg} specifies to use a decimal number
-composed of three digits padded with zeroes to express the sequence
-number. It is the same syntax supported by the C printf function, but
-only formats accepting a normal integer are suitable.
-
- at item
-You can put many streams of the same type in the output:
-
- at example
-ffmpeg -i test1.avi -i test2.avi -vcodec copy -acodec copy -vcodec copy -acodec copy test12.avi -newvideo -newaudio
- at end example
-
-In addition to the first video and audio streams, the resulting
-output file @file{test12.avi} will contain the second video
-and the second audio stream found in the input streams list.
-
-The @code{-newvideo}, @code{-newaudio} and @code{-newsubtitle}
-options have to be specified immediately after the name of the output
-file to which you want to add them.
-
- at end itemize
- at c man end EXAMPLES
-
- at include eval.texi
- at include encoders.texi
- at include demuxers.texi
- at include muxers.texi
- at include indevs.texi
- at include outdevs.texi
- at include protocols.texi
- at include bitstream_filters.texi
- at include filters.texi
- at include metadata.texi
-
- at ignore
-
- at setfilename ffmpeg
- at settitle ffmpeg video converter
-
- at c man begin SEEALSO
-avplay(1), avprobe(1), avserver(1) and the Libav HTML documentation
- at c man end
-
- at c man begin AUTHORS
-The Libav developers
- at c man end
-
- at end ignore
-
- at bye
diff --git a/ffmpeg.c b/ffmpeg.c
deleted file mode 100644
index f61de33..0000000
--- a/ffmpeg.c
+++ /dev/null
@@ -1,4415 +0,0 @@
-/*
- * ffmpeg main
- * Copyright (c) 2000-2003 Fabrice Bellard
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "config.h"
-#include <ctype.h>
-#include <string.h>
-#include <math.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <signal.h>
-#include <limits.h>
-#include <unistd.h>
-#include "libavformat/avformat.h"
-#include "libavdevice/avdevice.h"
-#include "libswscale/swscale.h"
-#include "libavutil/opt.h"
-#include "libavcodec/audioconvert.h"
-#include "libavutil/audioconvert.h"
-#include "libavutil/parseutils.h"
-#include "libavutil/samplefmt.h"
-#include "libavutil/colorspace.h"
-#include "libavutil/fifo.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/dict.h"
-#include "libavutil/mathematics.h"
-#include "libavutil/pixdesc.h"
-#include "libavutil/avstring.h"
-#include "libavutil/libm.h"
-#include "libavformat/os_support.h"
-
-#if CONFIG_AVFILTER
-# include "libavfilter/avfilter.h"
-# include "libavfilter/avfiltergraph.h"
-# include "libavfilter/vsrc_buffer.h"
-#endif
-
-#if HAVE_SYS_RESOURCE_H
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#elif HAVE_GETPROCESSTIMES
-#include <windows.h>
-#endif
-#if HAVE_GETPROCESSMEMORYINFO
-#include <windows.h>
-#include <psapi.h>
-#endif
-
-#if HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif
-
-#include <time.h>
-
-#include "cmdutils.h"
-
-#include "libavutil/avassert.h"
-
-const char program_name[] = "ffmpeg";
-const int program_birth_year = 2000;
-
-/* select an input stream for an output stream */
-typedef struct StreamMap {
-    int file_index;
-    int stream_index;
-    int sync_file_index;
-    int sync_stream_index;
-} StreamMap;
-
-/**
- * select an input file for an output file
- */
-typedef struct MetadataMap {
-    int  file;      ///< file index
-    char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
-    int  index;     ///< stream/chapter/program number
-} MetadataMap;
-
-typedef struct ChapterMap {
-    int in_file;
-    int out_file;
-} ChapterMap;
-
-static const OptionDef options[];
-
-#define MAX_FILES 100
-
-static const char *last_asked_format = NULL;
-static double *ts_scale;
-static int  nb_ts_scale;
-
-static AVFormatContext *output_files[MAX_FILES];
-static AVDictionary *output_opts[MAX_FILES];
-static int nb_output_files = 0;
-
-static StreamMap *stream_maps = NULL;
-static int nb_stream_maps;
-
-/* first item specifies output metadata, second is input */
-static MetadataMap (*meta_data_maps)[2] = NULL;
-static int nb_meta_data_maps;
-static int metadata_global_autocopy   = 1;
-static int metadata_streams_autocopy  = 1;
-static int metadata_chapters_autocopy = 1;
-
-static ChapterMap *chapter_maps = NULL;
-static int nb_chapter_maps;
-
-/* indexed by output file stream index */
-static int *streamid_map = NULL;
-static int nb_streamid_map = 0;
-
-static int frame_width  = 0;
-static int frame_height = 0;
-static float frame_aspect_ratio = 0;
-static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
-static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
-static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
-static AVRational frame_rate;
-static float video_qscale = 0;
-static uint16_t *intra_matrix = NULL;
-static uint16_t *inter_matrix = NULL;
-static const char *video_rc_override_string=NULL;
-static int video_disable = 0;
-static int video_discard = 0;
-static char *video_codec_name = NULL;
-static unsigned int video_codec_tag = 0;
-static char *video_language = NULL;
-static int same_quality = 0;
-static int do_deinterlace = 0;
-static int top_field_first = -1;
-static int me_threshold = 0;
-static int intra_dc_precision = 8;
-static int loop_input = 0;
-static int loop_output = AVFMT_NOOUTPUTLOOP;
-static int qp_hist = 0;
-#if CONFIG_AVFILTER
-static char *vfilters = NULL;
-#endif
-
-static int intra_only = 0;
-static int audio_sample_rate = 0;
-#define QSCALE_NONE -99999
-static float audio_qscale = QSCALE_NONE;
-static int audio_disable = 0;
-static int audio_channels = 0;
-static char  *audio_codec_name = NULL;
-static unsigned int audio_codec_tag = 0;
-static char *audio_language = NULL;
-
-static int subtitle_disable = 0;
-static char *subtitle_codec_name = NULL;
-static char *subtitle_language = NULL;
-static unsigned int subtitle_codec_tag = 0;
-
-static int data_disable = 0;
-static char *data_codec_name = NULL;
-static unsigned int data_codec_tag = 0;
-
-static float mux_preload= 0.5;
-static float mux_max_delay= 0.7;
-
-static int64_t recording_time = INT64_MAX;
-static int64_t start_time = 0;
-static int64_t input_ts_offset = 0;
-static int file_overwrite = 0;
-static AVDictionary *metadata;
-static int do_benchmark = 0;
-static int do_hex_dump = 0;
-static int do_pkt_dump = 0;
-static int do_psnr = 0;
-static int do_pass = 0;
-static char *pass_logfilename_prefix = NULL;
-static int audio_stream_copy = 0;
-static int video_stream_copy = 0;
-static int subtitle_stream_copy = 0;
-static int data_stream_copy = 0;
-static int video_sync_method= -1;
-static int audio_sync_method= 0;
-static float audio_drift_threshold= 0.1;
-static int copy_ts= 0;
-static int copy_tb;
-static int opt_shortest = 0;
-static char *vstats_filename;
-static FILE *vstats_file;
-static int opt_programid = 0;
-static int copy_initial_nonkeyframes = 0;
-
-static int rate_emu = 0;
-
-static int audio_volume = 256;
-
-static int exit_on_error = 0;
-static int using_stdin = 0;
-static int verbose = 1;
-static int thread_count= 1;
-static int64_t video_size = 0;
-static int64_t audio_size = 0;
-static int64_t extra_size = 0;
-static int nb_frames_dup = 0;
-static int nb_frames_drop = 0;
-static int input_sync;
-static uint64_t limit_filesize = 0;
-static int force_fps = 0;
-static char *forced_key_frames = NULL;
-
-static float dts_delta_threshold = 10;
-
-static int64_t timer_start;
-
-static uint8_t *audio_buf;
-static uint8_t *audio_out;
-static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
-
-static short *samples;
-
-static AVBitStreamFilterContext *video_bitstream_filters=NULL;
-static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
-static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
-
-#define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
-
-struct InputStream;
-
-typedef struct OutputStream {
-    int file_index;          /* file index */
-    int index;               /* stream index in the output file */
-    int source_index;        /* InputStream index */
-    AVStream *st;            /* stream in the output file */
-    int encoding_needed;     /* true if encoding needed for this stream */
-    int frame_number;
-    /* input pts and corresponding output pts
-       for A/V sync */
-    //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
-    struct InputStream *sync_ist; /* input stream to sync against */
-    int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
-    AVBitStreamFilterContext *bitstream_filters;
-    AVCodec *enc;
-
-    /* video only */
-    int video_resample;
-    AVFrame pict_tmp;      /* temporary image for resampling */
-    struct SwsContext *img_resample_ctx; /* for image resampling */
-    int resample_height;
-    int resample_width;
-    int resample_pix_fmt;
-    AVRational frame_rate;
-
-    float frame_aspect_ratio;
-
-    /* forced key frames */
-    int64_t *forced_kf_pts;
-    int forced_kf_count;
-    int forced_kf_index;
-
-    /* audio only */
-    int audio_resample;
-    ReSampleContext *resample; /* for audio resampling */
-    int resample_sample_fmt;
-    int resample_channels;
-    int resample_sample_rate;
-    int reformat_pair;
-    AVAudioConvert *reformat_ctx;
-    AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
-    FILE *logfile;
-
-#if CONFIG_AVFILTER
-    AVFilterContext *output_video_filter;
-    AVFilterContext *input_video_filter;
-    AVFilterBufferRef *picref;
-    char *avfilter;
-    AVFilterGraph *graph;
-#endif
-
-   int sws_flags;
-   AVDictionary *opts;
-} OutputStream;
-
-static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
-static int nb_output_streams_for_file[MAX_FILES] = { 0 };
-
-typedef struct InputStream {
-    int file_index;
-    AVStream *st;
-    int discard;             /* true if stream data should be discarded */
-    int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
-    AVCodec *dec;
-
-    int64_t       start;     /* time when read started */
-    int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
-                                is not defined */
-    int64_t       pts;       /* current pts */
-    PtsCorrectionContext pts_ctx;
-    double ts_scale;
-    int is_start;            /* is 1 at the start and after a discontinuity */
-    int showed_multi_packet_warning;
-    int is_past_recording_time;
-    AVDictionary *opts;
-} InputStream;
-
-typedef struct InputFile {
-    AVFormatContext *ctx;
-    int eof_reached;      /* true if eof reached */
-    int ist_index;        /* index of first stream in ist_table */
-    int buffer_size;      /* current total buffer size */
-    int64_t ts_offset;
-    int nb_streams;       /* nb streams we are aware of */
-} InputFile;
-
-static InputStream *input_streams = NULL;
-static int         nb_input_streams = 0;
-static InputFile   *input_files   = NULL;
-static int         nb_input_files   = 0;
-
-#if CONFIG_AVFILTER
-
-static int configure_video_filters(InputStream *ist, OutputStream *ost)
-{
-    AVFilterContext *last_filter, *filter;
-    /** filter graph containing all filters including input & output */
-    AVCodecContext *codec = ost->st->codec;
-    AVCodecContext *icodec = ist->st->codec;
-    AVSinkContext avsink_ctx = { .pix_fmt = codec->pix_fmt };
-    AVRational sample_aspect_ratio;
-    char args[255];
-    int ret;
-
-    ost->graph = avfilter_graph_alloc();
-
-    if (ist->st->sample_aspect_ratio.num){
-        sample_aspect_ratio = ist->st->sample_aspect_ratio;
-    }else
-        sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
-
-    snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
-             ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
-             sample_aspect_ratio.num, sample_aspect_ratio.den);
-
-    ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
-                                       "src", args, NULL, ost->graph);
-    if (ret < 0)
-        return ret;
-    ret = avfilter_graph_create_filter(&ost->output_video_filter, &avsink,
-                                       "out", NULL, &avsink_ctx, ost->graph);
-    if (ret < 0)
-        return ret;
-    last_filter = ost->input_video_filter;
-
-    if (codec->width  != icodec->width || codec->height != icodec->height) {
-        snprintf(args, 255, "%d:%d:flags=0x%X",
-                 codec->width,
-                 codec->height,
-                 ost->sws_flags);
-        if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
-                                                NULL, args, NULL, ost->graph)) < 0)
-            return ret;
-        if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
-            return ret;
-        last_filter = filter;
-    }
-
-    snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
-    ost->graph->scale_sws_opts = av_strdup(args);
-
-    if (ost->avfilter) {
-        AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
-        AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
-
-        outputs->name    = av_strdup("in");
-        outputs->filter_ctx = last_filter;
-        outputs->pad_idx = 0;
-        outputs->next    = NULL;
-
-        inputs->name    = av_strdup("out");
-        inputs->filter_ctx = ost->output_video_filter;
-        inputs->pad_idx = 0;
-        inputs->next    = NULL;
-
-        if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
-            return ret;
-        av_freep(&ost->avfilter);
-    } else {
-        if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
-            return ret;
-    }
-
-    if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
-        return ret;
-
-    codec->width  = ost->output_video_filter->inputs[0]->w;
-    codec->height = ost->output_video_filter->inputs[0]->h;
-    codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
-        ost->frame_aspect_ratio ? // overriden by the -aspect cli option
-        av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
-        ost->output_video_filter->inputs[0]->sample_aspect_ratio;
-
-    return 0;
-}
-#endif /* CONFIG_AVFILTER */
-
-static void term_exit(void)
-{
-    av_log(NULL, AV_LOG_QUIET, "");
-}
-
-static volatile int received_sigterm = 0;
-static volatile int received_nb_signals = 0;
-
-static void
-sigterm_handler(int sig)
-{
-    received_sigterm = sig;
-    received_nb_signals++;
-    term_exit();
-}
-
-static void term_init(void)
-{
-    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
-    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
-#ifdef SIGXCPU
-    signal(SIGXCPU, sigterm_handler);
-#endif
-}
-
-static int decode_interrupt_cb(void)
-{
-    return received_nb_signals > 1;
-}
-
-void exit_program(int ret)
-{
-    int i;
-
-    /* close files */
-    for(i=0;i<nb_output_files;i++) {
-        AVFormatContext *s = output_files[i];
-        if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
-            avio_close(s->pb);
-        avformat_free_context(s);
-        av_free(output_streams_for_file[i]);
-        av_dict_free(&output_opts[i]);
-    }
-    for(i=0;i<nb_input_files;i++) {
-        av_close_input_file(input_files[i].ctx);
-    }
-    for (i = 0; i < nb_input_streams; i++)
-        av_dict_free(&input_streams[i].opts);
-
-    av_free(intra_matrix);
-    av_free(inter_matrix);
-
-    if (vstats_file)
-        fclose(vstats_file);
-    av_free(vstats_filename);
-
-    av_free(streamid_map);
-    av_free(stream_maps);
-    av_free(meta_data_maps);
-
-    av_freep(&input_streams);
-    av_freep(&input_files);
-
-    av_free(video_codec_name);
-    av_free(audio_codec_name);
-    av_free(subtitle_codec_name);
-    av_free(data_codec_name);
-
-    uninit_opts();
-    av_free(audio_buf);
-    av_free(audio_out);
-    allocated_audio_buf_size= allocated_audio_out_size= 0;
-    av_free(samples);
-
-#if CONFIG_AVFILTER
-    avfilter_uninit();
-#endif
-    avformat_network_deinit();
-
-    if (received_sigterm) {
-        fprintf(stderr,
-            "Received signal %d: terminating.\n",
-            (int) received_sigterm);
-        exit (255);
-    }
-
-    exit(ret); /* not all OS-es handle main() return value */
-}
-
-static void assert_avoptions(AVDictionary *m)
-{
-    AVDictionaryEntry *t;
-    if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
-        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
-        exit_program(1);
-    }
-}
-
-static void assert_codec_experimental(AVCodecContext *c, int encoder)
-{
-    const char *codec_string = encoder ? "encoder" : "decoder";
-    AVCodec *codec;
-    if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
-        c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
-        av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
-                "results.\nAdd '-strict experimental' if you want to use it.\n",
-                codec_string, c->codec->name);
-        codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
-        if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
-            av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
-                   codec_string, codec->name);
-        exit_program(1);
-    }
-}
-
-static void choose_sample_fmt(AVStream *st, AVCodec *codec)
-{
-    if(codec && codec->sample_fmts){
-        const enum AVSampleFormat *p= codec->sample_fmts;
-        for(; *p!=-1; p++){
-            if(*p == st->codec->sample_fmt)
-                break;
-        }
-        if (*p == -1) {
-            av_log(NULL, AV_LOG_WARNING,
-                   "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
-                   av_get_sample_fmt_name(st->codec->sample_fmt),
-                   codec->name,
-                   av_get_sample_fmt_name(codec->sample_fmts[0]));
-            st->codec->sample_fmt = codec->sample_fmts[0];
-        }
-    }
-}
-
-/**
- * Update the requested input sample format based on the output sample format.
- * This is currently only used to request float output from decoders which
- * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
- * Ideally this will be removed in the future when decoders do not do format
- * conversion and only output in their native format.
- */
-static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
-                              AVCodecContext *enc)
-{
-    /* if sample formats match or a decoder sample format has already been
-       requested, just return */
-    if (enc->sample_fmt == dec->sample_fmt ||
-        dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
-        return;
-
-    /* if decoder supports more than one output format */
-    if (dec_codec && dec_codec->sample_fmts &&
-        dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
-        dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
-        const enum AVSampleFormat *p;
-        int min_dec = -1, min_inc = -1;
-
-        /* find a matching sample format in the encoder */
-        for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
-            if (*p == enc->sample_fmt) {
-                dec->request_sample_fmt = *p;
-                return;
-            } else if (*p > enc->sample_fmt) {
-                min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
-            } else
-                min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
-        }
-
-        /* if none match, provide the one that matches quality closest */
-        dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
-                                  enc->sample_fmt - min_dec;
-    }
-}
-
-static void choose_sample_rate(AVStream *st, AVCodec *codec)
-{
-    if(codec && codec->supported_samplerates){
-        const int *p= codec->supported_samplerates;
-        int best=0;
-        int best_dist=INT_MAX;
-        for(; *p; p++){
-            int dist= abs(st->codec->sample_rate - *p);
-            if(dist < best_dist){
-                best_dist= dist;
-                best= *p;
-            }
-        }
-        if(best_dist){
-            av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
-        }
-        st->codec->sample_rate= best;
-    }
-}
-
-static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
-{
-    if(codec && codec->pix_fmts){
-        const enum PixelFormat *p= codec->pix_fmts;
-        if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
-            if(st->codec->codec_id==CODEC_ID_MJPEG){
-                p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
-            }else if(st->codec->codec_id==CODEC_ID_LJPEG){
-                p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
-            }
-        }
-        for(; *p!=-1; p++){
-            if(*p == st->codec->pix_fmt)
-                break;
-        }
-        if (*p == -1) {
-            if(st->codec->pix_fmt != PIX_FMT_NONE)
-                av_log(NULL, AV_LOG_WARNING,
-                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
-                        av_pix_fmt_descriptors[st->codec->pix_fmt].name,
-                        codec->name,
-                        av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
-            st->codec->pix_fmt = codec->pix_fmts[0];
-        }
-    }
-}
-
-static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx, AVCodec *codec)
-{
-    OutputStream *ost;
-    AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
-    int idx      = oc->nb_streams - 1;
-
-    if (!st) {
-        av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
-        exit_program(1);
-    }
-
-    output_streams_for_file[file_idx] =
-        grow_array(output_streams_for_file[file_idx],
-                   sizeof(*output_streams_for_file[file_idx]),
-                   &nb_output_streams_for_file[file_idx],
-                   oc->nb_streams);
-    ost = output_streams_for_file[file_idx][idx] =
-        av_mallocz(sizeof(OutputStream));
-    if (!ost) {
-        fprintf(stderr, "Could not alloc output stream\n");
-        exit_program(1);
-    }
-    ost->file_index = file_idx;
-    ost->index = idx;
-    ost->st    = st;
-    ost->enc   = codec;
-    if (codec)
-        ost->opts  = filter_codec_opts(codec_opts, codec->id, oc, st);
-
-    avcodec_get_context_defaults3(st->codec, codec);
-
-    ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
-    return ost;
-}
-
-static int read_avserver_streams(AVFormatContext *s, const char *filename)
-{
-    int i, err;
-    AVFormatContext *ic = NULL;
-
-    err = avformat_open_input(&ic, filename, NULL, NULL);
-    if (err < 0)
-        return err;
-    /* copy stream format */
-    for(i=0;i<ic->nb_streams;i++) {
-        AVStream *st;
-        OutputStream *ost;
-        AVCodec *codec;
-
-        codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
-        ost   = new_output_stream(s, nb_output_files, codec);
-        st    = ost->st;
-
-        // FIXME: a more elegant solution is needed
-        memcpy(st, ic->streams[i], sizeof(AVStream));
-        st->info = NULL;
-        avcodec_copy_context(st->codec, ic->streams[i]->codec);
-
-        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
-            if (audio_stream_copy) {
-                st->stream_copy = 1;
-            } else
-                choose_sample_fmt(st, codec);
-        } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
-            if (video_stream_copy) {
-                st->stream_copy = 1;
-            } else
-                choose_pixel_fmt(st, codec);
-        }
-    }
-
-    av_close_input_file(ic);
-    return 0;
-}
-
-static double
-get_sync_ipts(const OutputStream *ost)
-{
-    const InputStream *ist = ost->sync_ist;
-    return (double)(ist->pts - start_time)/AV_TIME_BASE;
-}
-
-static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
-    int ret;
-
-    while(bsfc){
-        AVPacket new_pkt= *pkt;
-        int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
-                                          &new_pkt.data, &new_pkt.size,
-                                          pkt->data, pkt->size,
-                                          pkt->flags & AV_PKT_FLAG_KEY);
-        if(a>0){
-            av_free_packet(pkt);
-            new_pkt.destruct= av_destruct_packet;
-        } else if(a<0){
-            fprintf(stderr, "%s failed for stream %d, codec %s",
-                    bsfc->filter->name, pkt->stream_index,
-                    avctx->codec ? avctx->codec->name : "copy");
-            print_error("", a);
-            if (exit_on_error)
-                exit_program(1);
-        }
-        *pkt= new_pkt;
-
-        bsfc= bsfc->next;
-    }
-
-    ret= av_interleaved_write_frame(s, pkt);
-    if(ret < 0){
-        print_error("av_interleaved_write_frame()", ret);
-        exit_program(1);
-    }
-}
-
-#define MAX_AUDIO_PACKET_SIZE (128 * 1024)
-
-static void do_audio_out(AVFormatContext *s,
-                         OutputStream *ost,
-                         InputStream *ist,
-                         unsigned char *buf, int size)
-{
-    uint8_t *buftmp;
-    int64_t audio_out_size, audio_buf_size;
-    int64_t allocated_for_size= size;
-
-    int size_out, frame_bytes, ret, resample_changed;
-    AVCodecContext *enc= ost->st->codec;
-    AVCodecContext *dec= ist->st->codec;
-    int osize = av_get_bytes_per_sample(enc->sample_fmt);
-    int isize = av_get_bytes_per_sample(dec->sample_fmt);
-    const int coded_bps = av_get_bits_per_sample(enc->codec->id);
-
-need_realloc:
-    audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
-    audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
-    audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
-    audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
-    audio_buf_size*= osize*enc->channels;
-
-    audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
-    if(coded_bps > 8*osize)
-        audio_out_size= audio_out_size * coded_bps / (8*osize);
-    audio_out_size += FF_MIN_BUFFER_SIZE;
-
-    if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
-        fprintf(stderr, "Buffer sizes too large\n");
-        exit_program(1);
-    }
-
-    av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
-    av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
-    if (!audio_buf || !audio_out){
-        fprintf(stderr, "Out of memory in do_audio_out\n");
-        exit_program(1);
-    }
-
-    if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
-        ost->audio_resample = 1;
-
-    resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
-                       ost->resample_channels    != dec->channels   ||
-                       ost->resample_sample_rate != dec->sample_rate;
-
-    if ((ost->audio_resample && !ost->resample) || resample_changed) {
-        if (resample_changed) {
-            av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
-                   ist->file_index, ist->st->index,
-                   ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
-                   dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
-            ost->resample_sample_fmt  = dec->sample_fmt;
-            ost->resample_channels    = dec->channels;
-            ost->resample_sample_rate = dec->sample_rate;
-            if (ost->resample)
-                audio_resample_close(ost->resample);
-        }
-        /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
-        if (audio_sync_method <= 1 &&
-            ost->resample_sample_fmt  == enc->sample_fmt &&
-            ost->resample_channels    == enc->channels   &&
-            ost->resample_sample_rate == enc->sample_rate) {
-            ost->resample = NULL;
-            ost->audio_resample = 0;
-        } else if (ost->audio_resample) {
-            if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
-                fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
-            ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
-                                                   enc->sample_rate, dec->sample_rate,
-                                                   enc->sample_fmt,  dec->sample_fmt,
-                                                   16, 10, 0, 0.8);
-            if (!ost->resample) {
-                fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
-                        dec->channels, dec->sample_rate,
-                        enc->channels, enc->sample_rate);
-                exit_program(1);
-            }
-        }
-    }
-
-#define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
-    if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
-        MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
-        if (ost->reformat_ctx)
-            av_audio_convert_free(ost->reformat_ctx);
-        ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
-                                                   dec->sample_fmt, 1, NULL, 0);
-        if (!ost->reformat_ctx) {
-            fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
-                av_get_sample_fmt_name(dec->sample_fmt),
-                av_get_sample_fmt_name(enc->sample_fmt));
-            exit_program(1);
-        }
-        ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
-    }
-
-    if(audio_sync_method){
-        double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
-                - av_fifo_size(ost->fifo)/(enc->channels * 2);
-        double idelta= delta*dec->sample_rate / enc->sample_rate;
-        int byte_delta= ((int)idelta)*2*dec->channels;
-
-        //FIXME resample delay
-        if(fabs(delta) > 50){
-            if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
-                if(byte_delta < 0){
-                    byte_delta= FFMAX(byte_delta, -size);
-                    size += byte_delta;
-                    buf  -= byte_delta;
-                    if(verbose > 2)
-                        fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
-                    if(!size)
-                        return;
-                    ist->is_start=0;
-                }else{
-                    static uint8_t *input_tmp= NULL;
-                    input_tmp= av_realloc(input_tmp, byte_delta + size);
-
-                    if(byte_delta > allocated_for_size - size){
-                        allocated_for_size= byte_delta + (int64_t)size;
-                        goto need_realloc;
-                    }
-                    ist->is_start=0;
-
-                    memset(input_tmp, 0, byte_delta);
-                    memcpy(input_tmp + byte_delta, buf, size);
-                    buf= input_tmp;
-                    size += byte_delta;
-                    if(verbose > 2)
-                        fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
-                }
-            }else if(audio_sync_method>1){
-                int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
-                av_assert0(ost->audio_resample);
-                if(verbose > 2)
-                    fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
-//                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
-                av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
-            }
-        }
-    }else
-        ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
-                        - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
-
-    if (ost->audio_resample) {
-        buftmp = audio_buf;
-        size_out = audio_resample(ost->resample,
-                                  (short *)buftmp, (short *)buf,
-                                  size / (dec->channels * isize));
-        size_out = size_out * enc->channels * osize;
-    } else {
-        buftmp = buf;
-        size_out = size;
-    }
-
-    if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
-        const void *ibuf[6]= {buftmp};
-        void *obuf[6]= {audio_buf};
-        int istride[6]= {isize};
-        int ostride[6]= {osize};
-        int len= size_out/istride[0];
-        if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
-            printf("av_audio_convert() failed\n");
-            if (exit_on_error)
-                exit_program(1);
-            return;
-        }
-        buftmp = audio_buf;
-        size_out = len*osize;
-    }
-
-    /* now encode as many frames as possible */
-    if (enc->frame_size > 1) {
-        /* output resampled raw samples */
-        if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
-            fprintf(stderr, "av_fifo_realloc2() failed\n");
-            exit_program(1);
-        }
-        av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
-
-        frame_bytes = enc->frame_size * osize * enc->channels;
-
-        while (av_fifo_size(ost->fifo) >= frame_bytes) {
-            AVPacket pkt;
-            av_init_packet(&pkt);
-
-            av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
-
-            //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
-
-            ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
-                                       (short *)audio_buf);
-            if (ret < 0) {
-                fprintf(stderr, "Audio encoding failed\n");
-                exit_program(1);
-            }
-            audio_size += ret;
-            pkt.stream_index= ost->index;
-            pkt.data= audio_out;
-            pkt.size= ret;
-            if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
-                pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
-            pkt.flags |= AV_PKT_FLAG_KEY;
-            write_frame(s, &pkt, enc, ost->bitstream_filters);
-
-            ost->sync_opts += enc->frame_size;
-        }
-    } else {
-        AVPacket pkt;
-        av_init_packet(&pkt);
-
-        ost->sync_opts += size_out / (osize * enc->channels);
-
-        /* output a pcm frame */
-        /* determine the size of the coded buffer */
-        size_out /= osize;
-        if (coded_bps)
-            size_out = size_out*coded_bps/8;
-
-        if(size_out > audio_out_size){
-            fprintf(stderr, "Internal error, buffer size too small\n");
-            exit_program(1);
-        }
-
-        //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
-        ret = avcodec_encode_audio(enc, audio_out, size_out,
-                                   (short *)buftmp);
-        if (ret < 0) {
-            fprintf(stderr, "Audio encoding failed\n");
-            exit_program(1);
-        }
-        audio_size += ret;
-        pkt.stream_index= ost->index;
-        pkt.data= audio_out;
-        pkt.size= ret;
-        if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
-            pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
-        pkt.flags |= AV_PKT_FLAG_KEY;
-        write_frame(s, &pkt, enc, ost->bitstream_filters);
-    }
-}
-
-static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
-{
-    AVCodecContext *dec;
-    AVPicture *picture2;
-    AVPicture picture_tmp;
-    uint8_t *buf = 0;
-
-    dec = ist->st->codec;
-
-    /* deinterlace : must be done before any resize */
-    if (do_deinterlace) {
-        int size;
-
-        /* create temporary picture */
-        size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
-        buf = av_malloc(size);
-        if (!buf)
-            return;
-
-        picture2 = &picture_tmp;
-        avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
-
-        if(avpicture_deinterlace(picture2, picture,
-                                 dec->pix_fmt, dec->width, dec->height) < 0) {
-            /* if error, do not deinterlace */
-            fprintf(stderr, "Deinterlacing failed\n");
-            av_free(buf);
-            buf = NULL;
-            picture2 = picture;
-        }
-    } else {
-        picture2 = picture;
-    }
-
-    if (picture != picture2)
-        *picture = *picture2;
-    *bufp = buf;
-}
-
-/* we begin to correct av delay at this threshold */
-#define AV_DELAY_MAX 0.100
-
-static void do_subtitle_out(AVFormatContext *s,
-                            OutputStream *ost,
-                            InputStream *ist,
-                            AVSubtitle *sub,
-                            int64_t pts)
-{
-    static uint8_t *subtitle_out = NULL;
-    int subtitle_out_max_size = 1024 * 1024;
-    int subtitle_out_size, nb, i;
-    AVCodecContext *enc;
-    AVPacket pkt;
-
-    if (pts == AV_NOPTS_VALUE) {
-        fprintf(stderr, "Subtitle packets must have a pts\n");
-        if (exit_on_error)
-            exit_program(1);
-        return;
-    }
-
-    enc = ost->st->codec;
-
-    if (!subtitle_out) {
-        subtitle_out = av_malloc(subtitle_out_max_size);
-    }
-
-    /* Note: DVB subtitle need one packet to draw them and one other
-       packet to clear them */
-    /* XXX: signal it in the codec context ? */
-    if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
-        nb = 2;
-    else
-        nb = 1;
-
-    for(i = 0; i < nb; i++) {
-        sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
-        // start_display_time is required to be 0
-        sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
-        sub->end_display_time -= sub->start_display_time;
-        sub->start_display_time = 0;
-        subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
-                                                    subtitle_out_max_size, sub);
-        if (subtitle_out_size < 0) {
-            fprintf(stderr, "Subtitle encoding failed\n");
-            exit_program(1);
-        }
-
-        av_init_packet(&pkt);
-        pkt.stream_index = ost->index;
-        pkt.data = subtitle_out;
-        pkt.size = subtitle_out_size;
-        pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
-        if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
-            /* XXX: the pts correction is handled here. Maybe handling
-               it in the codec would be better */
-            if (i == 0)
-                pkt.pts += 90 * sub->start_display_time;
-            else
-                pkt.pts += 90 * sub->end_display_time;
-        }
-        write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
-    }
-}
-
-static int bit_buffer_size= 1024*256;
-static uint8_t *bit_buffer= NULL;
-
-static void do_video_out(AVFormatContext *s,
-                         OutputStream *ost,
-                         InputStream *ist,
-                         AVFrame *in_picture,
-                         int *frame_size, float quality)
-{
-    int nb_frames, i, ret, resample_changed;
-    AVFrame *final_picture, *formatted_picture;
-    AVCodecContext *enc, *dec;
-    double sync_ipts;
-
-    enc = ost->st->codec;
-    dec = ist->st->codec;
-
-    sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
-
-    /* by default, we output a single frame */
-    nb_frames = 1;
-
-    *frame_size = 0;
-
-    if(video_sync_method){
-        double vdelta = sync_ipts - ost->sync_opts;
-        //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
-        if (vdelta < -1.1)
-            nb_frames = 0;
-        else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
-            if(vdelta<=-0.6){
-                nb_frames=0;
-            }else if(vdelta>0.6)
-                ost->sync_opts= lrintf(sync_ipts);
-        }else if (vdelta > 1.1)
-            nb_frames = lrintf(vdelta);
-//fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
-        if (nb_frames == 0){
-            ++nb_frames_drop;
-            if (verbose>2)
-                fprintf(stderr, "*** drop!\n");
-        }else if (nb_frames > 1) {
-            nb_frames_dup += nb_frames - 1;
-            if (verbose>2)
-                fprintf(stderr, "*** %d dup!\n", nb_frames-1);
-        }
-    }else
-        ost->sync_opts= lrintf(sync_ipts);
-
-    nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
-    if (nb_frames <= 0)
-        return;
-
-    formatted_picture = in_picture;
-    final_picture = formatted_picture;
-
-    resample_changed = ost->resample_width   != dec->width  ||
-                       ost->resample_height  != dec->height ||
-                       ost->resample_pix_fmt != dec->pix_fmt;
-
-    if (resample_changed) {
-        av_log(NULL, AV_LOG_INFO,
-               "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
-               ist->file_index, ist->st->index,
-               ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
-               dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
-        if(!ost->video_resample)
-            exit_program(1);
-    }
-
-#if !CONFIG_AVFILTER
-    if (ost->video_resample) {
-        final_picture = &ost->pict_tmp;
-        if (resample_changed) {
-            /* initialize a new scaler context */
-            sws_freeContext(ost->img_resample_ctx);
-            ost->img_resample_ctx = sws_getContext(
-                ist->st->codec->width,
-                ist->st->codec->height,
-                ist->st->codec->pix_fmt,
-                ost->st->codec->width,
-                ost->st->codec->height,
-                ost->st->codec->pix_fmt,
-                ost->sws_flags, NULL, NULL, NULL);
-            if (ost->img_resample_ctx == NULL) {
-                fprintf(stderr, "Cannot get resampling context\n");
-                exit_program(1);
-            }
-        }
-        sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
-              0, ost->resample_height, final_picture->data, final_picture->linesize);
-    }
-#endif
-
-    /* duplicates frame if needed */
-    for(i=0;i<nb_frames;i++) {
-        AVPacket pkt;
-        av_init_packet(&pkt);
-        pkt.stream_index= ost->index;
-
-        if (s->oformat->flags & AVFMT_RAWPICTURE) {
-            /* raw pictures are written as AVPicture structure to
-               avoid any copies. We support temorarily the older
-               method. */
-            AVFrame* old_frame = enc->coded_frame;
-            enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
-            pkt.data= (uint8_t *)final_picture;
-            pkt.size=  sizeof(AVPicture);
-            pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
-            pkt.flags |= AV_PKT_FLAG_KEY;
-
-            write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
-            enc->coded_frame = old_frame;
-        } else {
-            AVFrame big_picture;
-
-            big_picture= *final_picture;
-            /* better than nothing: use input picture interlaced
-               settings */
-            big_picture.interlaced_frame = in_picture->interlaced_frame;
-            if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
-                if(top_field_first == -1)
-                    big_picture.top_field_first = in_picture->top_field_first;
-                else
-                    big_picture.top_field_first = top_field_first;
-            }
-
-            /* handles sameq here. This is not correct because it may
-               not be a global option */
-            big_picture.quality = quality;
-            if(!me_threshold)
-                big_picture.pict_type = 0;
-//            big_picture.pts = AV_NOPTS_VALUE;
-            big_picture.pts= ost->sync_opts;
-//            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
-//av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
-            if (ost->forced_kf_index < ost->forced_kf_count &&
-                big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
-                big_picture.pict_type = AV_PICTURE_TYPE_I;
-                ost->forced_kf_index++;
-            }
-            ret = avcodec_encode_video(enc,
-                                       bit_buffer, bit_buffer_size,
-                                       &big_picture);
-            if (ret < 0) {
-                fprintf(stderr, "Video encoding failed\n");
-                exit_program(1);
-            }
-
-            if(ret>0){
-                pkt.data= bit_buffer;
-                pkt.size= ret;
-                if(enc->coded_frame->pts != AV_NOPTS_VALUE)
-                    pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
-/*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
-   pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
-   pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
-
-                if(enc->coded_frame->key_frame)
-                    pkt.flags |= AV_PKT_FLAG_KEY;
-                write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
-                *frame_size = ret;
-                video_size += ret;
-                //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
-                //        enc->frame_number-1, ret, enc->pict_type);
-                /* if two pass, output log */
-                if (ost->logfile && enc->stats_out) {
-                    fprintf(ost->logfile, "%s", enc->stats_out);
-                }
-            }
-        }
-        ost->sync_opts++;
-        ost->frame_number++;
-    }
-}
-
-static double psnr(double d){
-    return -10.0*log(d)/log(10.0);
-}
-
-static void do_video_stats(AVFormatContext *os, OutputStream *ost,
-                           int frame_size)
-{
-    AVCodecContext *enc;
-    int frame_number;
-    double ti1, bitrate, avg_bitrate;
-
-    /* this is executed just the first time do_video_stats is called */
-    if (!vstats_file) {
-        vstats_file = fopen(vstats_filename, "w");
-        if (!vstats_file) {
-            perror("fopen");
-            exit_program(1);
-        }
-    }
-
-    enc = ost->st->codec;
-    if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
-        frame_number = ost->frame_number;
-        fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
-        if (enc->flags&CODEC_FLAG_PSNR)
-            fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
-
-        fprintf(vstats_file,"f_size= %6d ", frame_size);
-        /* compute pts value */
-        ti1 = ost->sync_opts * av_q2d(enc->time_base);
-        if (ti1 < 0.01)
-            ti1 = 0.01;
-
-        bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
-        avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
-        fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
-            (double)video_size / 1024, ti1, bitrate, avg_bitrate);
-        fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
-    }
-}
-
-static void print_report(AVFormatContext **output_files,
-                         OutputStream **ost_table, int nb_ostreams,
-                         int is_last_report)
-{
-    char buf[1024];
-    OutputStream *ost;
-    AVFormatContext *oc;
-    int64_t total_size;
-    AVCodecContext *enc;
-    int frame_number, vid, i;
-    double bitrate, ti1, pts;
-    static int64_t last_time = -1;
-    static int qp_histogram[52];
-
-    if (!is_last_report) {
-        int64_t cur_time;
-        /* display the report every 0.5 seconds */
-        cur_time = av_gettime();
-        if (last_time == -1) {
-            last_time = cur_time;
-            return;
-        }
-        if ((cur_time - last_time) < 500000)
-            return;
-        last_time = cur_time;
-    }
-
-
-    oc = output_files[0];
-
-    total_size = avio_size(oc->pb);
-    if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
-        total_size= avio_tell(oc->pb);
-
-    buf[0] = '\0';
-    ti1 = 1e10;
-    vid = 0;
-    for(i=0;i<nb_ostreams;i++) {
-        float q = -1;
-        ost = ost_table[i];
-        enc = ost->st->codec;
-        if (!ost->st->stream_copy && enc->coded_frame)
-            q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
-        if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
-            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
-        }
-        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
-            float t = (av_gettime()-timer_start) / 1000000.0;
-
-            frame_number = ost->frame_number;
-            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
-                     frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
-            if(is_last_report)
-                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
-            if(qp_hist){
-                int j;
-                int qp = lrintf(q);
-                if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
-                    qp_histogram[qp]++;
-                for(j=0; j<32; j++)
-                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
-            }
-            if (enc->flags&CODEC_FLAG_PSNR){
-                int j;
-                double error, error_sum=0;
-                double scale, scale_sum=0;
-                char type[3]= {'Y','U','V'};
-                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
-                for(j=0; j<3; j++){
-                    if(is_last_report){
-                        error= enc->error[j];
-                        scale= enc->width*enc->height*255.0*255.0*frame_number;
-                    }else{
-                        error= enc->coded_frame->error[j];
-                        scale= enc->width*enc->height*255.0*255.0;
-                    }
-                    if(j) scale/=4;
-                    error_sum += error;
-                    scale_sum += scale;
-                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
-                }
-                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
-            }
-            vid = 1;
-        }
-        /* compute min output value */
-        pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
-        if ((pts < ti1) && (pts > 0))
-            ti1 = pts;
-    }
-    if (ti1 < 0.01)
-        ti1 = 0.01;
-
-    if (verbose > 0 || is_last_report) {
-        bitrate = (double)(total_size * 8) / ti1 / 1000.0;
-
-        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
-            "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
-            (double)total_size / 1024, ti1, bitrate);
-
-        if (nb_frames_dup || nb_frames_drop)
-          snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
-                  nb_frames_dup, nb_frames_drop);
-
-        if (verbose >= 0)
-            fprintf(stderr, "%s    \r", buf);
-
-        fflush(stderr);
-    }
-
-    if (is_last_report && verbose >= 0){
-        int64_t raw= audio_size + video_size + extra_size;
-        fprintf(stderr, "\n");
-        fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
-                video_size/1024.0,
-                audio_size/1024.0,
-                extra_size/1024.0,
-                100.0*(total_size - raw)/raw
-        );
-    }
-}
-
-static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
-{
-    int fill_char = 0x00;
-    if (sample_fmt == AV_SAMPLE_FMT_U8)
-        fill_char = 0x80;
-    memset(buf, fill_char, size);
-}
-
-/* pkt = NULL means EOF (needed to flush decoder buffers) */
-static int output_packet(InputStream *ist, int ist_index,
-                         OutputStream **ost_table, int nb_ostreams,
-                         const AVPacket *pkt)
-{
-    AVFormatContext *os;
-    OutputStream *ost;
-    int ret, i;
-    int got_output;
-    AVFrame picture;
-    void *buffer_to_free = NULL;
-    static unsigned int samples_size= 0;
-    AVSubtitle subtitle, *subtitle_to_free;
-    int64_t pkt_pts = AV_NOPTS_VALUE;
-#if CONFIG_AVFILTER
-    int frame_available;
-#endif
-    float quality;
-
-    AVPacket avpkt;
-    int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
-
-    if(ist->next_pts == AV_NOPTS_VALUE)
-        ist->next_pts= ist->pts;
-
-    if (pkt == NULL) {
-        /* EOF handling */
-        av_init_packet(&avpkt);
-        avpkt.data = NULL;
-        avpkt.size = 0;
-        goto handle_eof;
-    } else {
-        avpkt = *pkt;
-    }
-
-    if(pkt->dts != AV_NOPTS_VALUE)
-        ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
-    if(pkt->pts != AV_NOPTS_VALUE)
-        pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
-
-    //while we have more to decode or while the decoder did output something on EOF
-    while (avpkt.size > 0 || (!pkt && got_output)) {
-        uint8_t *data_buf, *decoded_data_buf;
-        int data_size, decoded_data_size;
-    handle_eof:
-        ist->pts= ist->next_pts;
-
-        if(avpkt.size && avpkt.size != pkt->size &&
-           ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
-            fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
-            ist->showed_multi_packet_warning=1;
-        }
-
-        /* decode the packet if needed */
-        decoded_data_buf = NULL; /* fail safe */
-        decoded_data_size= 0;
-        data_buf  = avpkt.data;
-        data_size = avpkt.size;
-        subtitle_to_free = NULL;
-        if (ist->decoding_needed) {
-            switch(ist->st->codec->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:{
-                if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
-                    samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
-                    av_free(samples);
-                    samples= av_malloc(samples_size);
-                }
-                decoded_data_size= samples_size;
-                    /* XXX: could avoid copy if PCM 16 bits with same
-                       endianness as CPU */
-                ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
-                                            &avpkt);
-                if (ret < 0)
-                    return ret;
-                avpkt.data += ret;
-                avpkt.size -= ret;
-                data_size   = ret;
-                got_output  = decoded_data_size > 0;
-                /* Some bug in mpeg audio decoder gives */
-                /* decoded_data_size < 0, it seems they are overflows */
-                if (!got_output) {
-                    /* no audio frame */
-                    continue;
-                }
-                decoded_data_buf = (uint8_t *)samples;
-                ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
-                    (ist->st->codec->sample_rate * ist->st->codec->channels);
-                break;}
-            case AVMEDIA_TYPE_VIDEO:
-                    decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
-                    /* XXX: allocate picture correctly */
-                    avcodec_get_frame_defaults(&picture);
-                    avpkt.pts = pkt_pts;
-                    avpkt.dts = ist->pts;
-                    pkt_pts = AV_NOPTS_VALUE;
-
-                    ret = avcodec_decode_video2(ist->st->codec,
-                                                &picture, &got_output, &avpkt);
-                    quality = same_quality ? picture.quality : 0;
-                    if (ret < 0)
-                        return ret;
-                    if (!got_output) {
-                        /* no picture yet */
-                        goto discard_packet;
-                    }
-                    ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
-                    if (ist->st->codec->time_base.num != 0) {
-                        int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
-                        ist->next_pts += ((int64_t)AV_TIME_BASE *
-                                          ist->st->codec->time_base.num * ticks) /
-                            ist->st->codec->time_base.den;
-                    }
-                    avpkt.size = 0;
-                    buffer_to_free = NULL;
-                    pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
-                    break;
-            case AVMEDIA_TYPE_SUBTITLE:
-                ret = avcodec_decode_subtitle2(ist->st->codec,
-                                               &subtitle, &got_output, &avpkt);
-                if (ret < 0)
-                    return ret;
-                if (!got_output) {
-                    goto discard_packet;
-                }
-                subtitle_to_free = &subtitle;
-                avpkt.size = 0;
-                break;
-            default:
-                return -1;
-            }
-        } else {
-            switch(ist->st->codec->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:
-                ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
-                    ist->st->codec->sample_rate;
-                break;
-            case AVMEDIA_TYPE_VIDEO:
-                if (ist->st->codec->time_base.num != 0) {
-                    int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
-                    ist->next_pts += ((int64_t)AV_TIME_BASE *
-                                      ist->st->codec->time_base.num * ticks) /
-                        ist->st->codec->time_base.den;
-                }
-                break;
-            }
-            ret = avpkt.size;
-            avpkt.size = 0;
-        }
-
-#if CONFIG_AVFILTER
-        if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
-            for (i = 0; i < nb_ostreams; i++) {
-                ost = ost_table[i];
-                if (ost->input_video_filter && ost->source_index == ist_index) {
-                    AVRational sar;
-                    if (ist->st->sample_aspect_ratio.num)
-                        sar = ist->st->sample_aspect_ratio;
-                    else
-                        sar = ist->st->codec->sample_aspect_ratio;
-                    // add it to be filtered
-                    av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
-                                             ist->pts,
-                                             sar);
-                }
-            }
-        }
-#endif
-
-        // preprocess audio (volume)
-        if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
-            if (audio_volume != 256) {
-                short *volp;
-                volp = samples;
-                for(i=0;i<(decoded_data_size / sizeof(short));i++) {
-                    int v = ((*volp) * audio_volume + 128) >> 8;
-                    if (v < -32768) v = -32768;
-                    if (v >  32767) v = 32767;
-                    *volp++ = v;
-                }
-            }
-        }
-
-        /* frame rate emulation */
-        if (rate_emu) {
-            int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
-            int64_t now = av_gettime() - ist->start;
-            if (pts > now)
-                usleep(pts - now);
-        }
-        /* if output time reached then transcode raw format,
-           encode packets and output them */
-        if (start_time == 0 || ist->pts >= start_time)
-            for(i=0;i<nb_ostreams;i++) {
-                int frame_size;
-
-                ost = ost_table[i];
-                if (ost->source_index == ist_index) {
-#if CONFIG_AVFILTER
-                frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
-                    !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
-                while (frame_available) {
-                    AVRational ist_pts_tb;
-                    if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
-                        get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
-                    if (ost->picref)
-                        ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
-#endif
-                    os = output_files[ost->file_index];
-
-                    /* set the input output pts pairs */
-                    //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
-
-                    if (ost->encoding_needed) {
-                        av_assert0(ist->decoding_needed);
-                        switch(ost->st->codec->codec_type) {
-                        case AVMEDIA_TYPE_AUDIO:
-                            do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
-                            break;
-                        case AVMEDIA_TYPE_VIDEO:
-#if CONFIG_AVFILTER
-                            if (ost->picref->video && !ost->frame_aspect_ratio)
-                                ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
-#endif
-                            do_video_out(os, ost, ist, &picture, &frame_size,
-                                         same_quality ? quality : ost->st->codec->global_quality);
-                            if (vstats_filename && frame_size)
-                                do_video_stats(os, ost, frame_size);
-                            break;
-                        case AVMEDIA_TYPE_SUBTITLE:
-                            do_subtitle_out(os, ost, ist, &subtitle,
-                                            pkt->pts);
-                            break;
-                        default:
-                            abort();
-                        }
-                    } else {
-                        AVFrame avframe; //FIXME/XXX remove this
-                        AVPacket opkt;
-                        int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
-
-                        av_init_packet(&opkt);
-
-                        if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
-#if !CONFIG_AVFILTER
-                            continue;
-#else
-                            goto cont;
-#endif
-
-                        /* no reencoding needed : output the packet directly */
-                        /* force the input stream PTS */
-
-                        avcodec_get_frame_defaults(&avframe);
-                        ost->st->codec->coded_frame= &avframe;
-                        avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
-
-                        if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
-                            audio_size += data_size;
-                        else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
-                            video_size += data_size;
-                            ost->sync_opts++;
-                        }
-
-                        opkt.stream_index= ost->index;
-                        if(pkt->pts != AV_NOPTS_VALUE)
-                            opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
-                        else
-                            opkt.pts= AV_NOPTS_VALUE;
-
-                        if (pkt->dts == AV_NOPTS_VALUE)
-                            opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
-                        else
-                            opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
-                        opkt.dts -= ost_tb_start_time;
-
-                        opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
-                        opkt.flags= pkt->flags;
-
-                        //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
-                        if(   ost->st->codec->codec_id != CODEC_ID_H264
-                           && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
-                           && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
-                           ) {
-                            if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
-                                opkt.destruct= av_destruct_packet;
-                        } else {
-                            opkt.data = data_buf;
-                            opkt.size = data_size;
-                        }
-
-                        write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
-                        ost->st->codec->frame_number++;
-                        ost->frame_number++;
-                        av_free_packet(&opkt);
-                    }
-#if CONFIG_AVFILTER
-                    cont:
-                    frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
-                                       ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
-                    if (ost->picref)
-                        avfilter_unref_buffer(ost->picref);
-                }
-#endif
-                }
-            }
-
-        av_free(buffer_to_free);
-        /* XXX: allocate the subtitles in the codec ? */
-        if (subtitle_to_free) {
-            avsubtitle_free(subtitle_to_free);
-            subtitle_to_free = NULL;
-        }
-    }
- discard_packet:
-    if (pkt == NULL) {
-        /* EOF handling */
-
-        for(i=0;i<nb_ostreams;i++) {
-            ost = ost_table[i];
-            if (ost->source_index == ist_index) {
-                AVCodecContext *enc= ost->st->codec;
-                os = output_files[ost->file_index];
-
-                if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
-                    continue;
-                if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
-                    continue;
-
-                if (ost->encoding_needed) {
-                    for(;;) {
-                        AVPacket pkt;
-                        int fifo_bytes;
-                        av_init_packet(&pkt);
-                        pkt.stream_index= ost->index;
-
-                        switch(ost->st->codec->codec_type) {
-                        case AVMEDIA_TYPE_AUDIO:
-                            fifo_bytes = av_fifo_size(ost->fifo);
-                            ret = 0;
-                            /* encode any samples remaining in fifo */
-                            if (fifo_bytes > 0) {
-                                int osize = av_get_bytes_per_sample(enc->sample_fmt);
-                                int fs_tmp = enc->frame_size;
-
-                                av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
-                                if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
-                                    enc->frame_size = fifo_bytes / (osize * enc->channels);
-                                } else { /* pad */
-                                    int frame_bytes = enc->frame_size*osize*enc->channels;
-                                    if (allocated_audio_buf_size < frame_bytes)
-                                        exit_program(1);
-                                    generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
-                                }
-
-                                ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
-                                pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
-                                                          ost->st->time_base.num, enc->sample_rate);
-                                enc->frame_size = fs_tmp;
-                            }
-                            if(ret <= 0) {
-                                ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
-                            }
-                            if (ret < 0) {
-                                fprintf(stderr, "Audio encoding failed\n");
-                                exit_program(1);
-                            }
-                            audio_size += ret;
-                            pkt.flags |= AV_PKT_FLAG_KEY;
-                            break;
-                        case AVMEDIA_TYPE_VIDEO:
-                            ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
-                            if (ret < 0) {
-                                fprintf(stderr, "Video encoding failed\n");
-                                exit_program(1);
-                            }
-                            video_size += ret;
-                            if(enc->coded_frame && enc->coded_frame->key_frame)
-                                pkt.flags |= AV_PKT_FLAG_KEY;
-                            if (ost->logfile && enc->stats_out) {
-                                fprintf(ost->logfile, "%s", enc->stats_out);
-                            }
-                            break;
-                        default:
-                            ret=-1;
-                        }
-
-                        if(ret<=0)
-                            break;
-                        pkt.data= bit_buffer;
-                        pkt.size= ret;
-                        if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
-                            pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
-                        write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
-                    }
-                }
-            }
-        }
-    }
-
-    return 0;
-}
-
-static void print_sdp(AVFormatContext **avc, int n)
-{
-    char sdp[2048];
-
-    av_sdp_create(avc, n, sdp, sizeof(sdp));
-    printf("SDP:\n%s\n", sdp);
-    fflush(stdout);
-}
-
-static int copy_chapters(int infile, int outfile)
-{
-    AVFormatContext *is = input_files[infile].ctx;
-    AVFormatContext *os = output_files[outfile];
-    int i;
-
-    for (i = 0; i < is->nb_chapters; i++) {
-        AVChapter *in_ch = is->chapters[i], *out_ch;
-        int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
-                                      AV_TIME_BASE_Q, in_ch->time_base);
-        int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
-                           av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
-
-
-        if (in_ch->end < ts_off)
-            continue;
-        if (rt != INT64_MAX && in_ch->start > rt + ts_off)
-            break;
-
-        out_ch = av_mallocz(sizeof(AVChapter));
-        if (!out_ch)
-            return AVERROR(ENOMEM);
-
-        out_ch->id        = in_ch->id;
-        out_ch->time_base = in_ch->time_base;
-        out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
-        out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
-
-        if (metadata_chapters_autocopy)
-            av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
-
-        os->nb_chapters++;
-        os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
-        if (!os->chapters)
-            return AVERROR(ENOMEM);
-        os->chapters[os->nb_chapters - 1] = out_ch;
-    }
-    return 0;
-}
-
-static void parse_forced_key_frames(char *kf, OutputStream *ost,
-                                    AVCodecContext *avctx)
-{
-    char *p;
-    int n = 1, i;
-    int64_t t;
-
-    for (p = kf; *p; p++)
-        if (*p == ',')
-            n++;
-    ost->forced_kf_count = n;
-    ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
-    if (!ost->forced_kf_pts) {
-        av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
-        exit_program(1);
-    }
-    for (i = 0; i < n; i++) {
-        p = i ? strchr(p, ',') + 1 : kf;
-        t = parse_time_or_die("force_key_frames", p, 1);
-        ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
-    }
-}
-
-/*
- * The following code is the main loop of the file converter
- */
-static int transcode(AVFormatContext **output_files,
-                     int nb_output_files,
-                     InputFile *input_files,
-                     int nb_input_files,
-                     StreamMap *stream_maps, int nb_stream_maps)
-{
-    int ret = 0, i, j, k, n, nb_ostreams = 0;
-    AVFormatContext *is, *os;
-    AVCodecContext *codec, *icodec;
-    OutputStream *ost, **ost_table = NULL;
-    InputStream *ist;
-    char error[1024];
-    int want_sdp = 1;
-    uint8_t no_packet[MAX_FILES]={0};
-    int no_packet_count=0;
-
-    if (rate_emu)
-        for (i = 0; i < nb_input_streams; i++)
-            input_streams[i].start = av_gettime();
-
-    /* output stream init */
-    nb_ostreams = 0;
-    for(i=0;i<nb_output_files;i++) {
-        os = output_files[i];
-        if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
-            av_dump_format(output_files[i], i, output_files[i]->filename, 1);
-            fprintf(stderr, "Output file #%d does not contain any stream\n", i);
-            ret = AVERROR(EINVAL);
-            goto fail;
-        }
-        nb_ostreams += os->nb_streams;
-    }
-    if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
-        fprintf(stderr, "Number of stream maps must match number of output streams\n");
-        ret = AVERROR(EINVAL);
-        goto fail;
-    }
-
-    /* Sanity check the mapping args -- do the input files & streams exist? */
-    for(i=0;i<nb_stream_maps;i++) {
-        int fi = stream_maps[i].file_index;
-        int si = stream_maps[i].stream_index;
-
-        if (fi < 0 || fi > nb_input_files - 1 ||
-            si < 0 || si > input_files[fi].nb_streams - 1) {
-            fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
-            ret = AVERROR(EINVAL);
-            goto fail;
-        }
-        fi = stream_maps[i].sync_file_index;
-        si = stream_maps[i].sync_stream_index;
-        if (fi < 0 || fi > nb_input_files - 1 ||
-            si < 0 || si > input_files[fi].nb_streams - 1) {
-            fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
-            ret = AVERROR(EINVAL);
-            goto fail;
-        }
-    }
-
-    ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
-    if (!ost_table)
-        goto fail;
-    n = 0;
-    for(k=0;k<nb_output_files;k++) {
-        os = output_files[k];
-        for(i=0;i<os->nb_streams;i++,n++) {
-            int found;
-            ost = ost_table[n] = output_streams_for_file[k][i];
-            if (nb_stream_maps > 0) {
-                ost->source_index = input_files[stream_maps[n].file_index].ist_index +
-                    stream_maps[n].stream_index;
-
-                /* Sanity check that the stream types match */
-                if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
-                    int i= ost->file_index;
-                    av_dump_format(output_files[i], i, output_files[i]->filename, 1);
-                    fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
-                        stream_maps[n].file_index, stream_maps[n].stream_index,
-                        ost->file_index, ost->index);
-                    exit_program(1);
-                }
-
-            } else {
-                int best_nb_frames=-1;
-                /* get corresponding input stream index : we select the first one with the right type */
-                found = 0;
-                for (j = 0; j < nb_input_streams; j++) {
-                    int skip=0;
-                    ist = &input_streams[j];
-                    if(opt_programid){
-                        int pi,si;
-                        AVFormatContext *f = input_files[ist->file_index].ctx;
-                        skip=1;
-                        for(pi=0; pi<f->nb_programs; pi++){
-                            AVProgram *p= f->programs[pi];
-                            if(p->id == opt_programid)
-                                for(si=0; si<p->nb_stream_indexes; si++){
-                                    if(f->streams[ p->stream_index[si] ] == ist->st)
-                                        skip=0;
-                                }
-                        }
-                    }
-                    if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
-                        ist->st->codec->codec_type == ost->st->codec->codec_type) {
-                        if(best_nb_frames < ist->st->codec_info_nb_frames){
-                            best_nb_frames= ist->st->codec_info_nb_frames;
-                            ost->source_index = j;
-                            found = 1;
-                        }
-                    }
-                }
-
-                if (!found) {
-                    if(! opt_programid) {
-                        /* try again and reuse existing stream */
-                        for (j = 0; j < nb_input_streams; j++) {
-                            ist = &input_streams[j];
-                            if (   ist->st->codec->codec_type == ost->st->codec->codec_type
-                                && ist->st->discard != AVDISCARD_ALL) {
-                                ost->source_index = j;
-                                found = 1;
-                            }
-                        }
-                    }
-                    if (!found) {
-                        int i= ost->file_index;
-                        av_dump_format(output_files[i], i, output_files[i]->filename, 1);
-                        fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
-                                ost->file_index, ost->index);
-                        exit_program(1);
-                    }
-                }
-            }
-            ist = &input_streams[ost->source_index];
-            ist->discard = 0;
-            ost->sync_ist = (nb_stream_maps > 0) ?
-                &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
-                         stream_maps[n].sync_stream_index] : ist;
-        }
-    }
-
-    /* for each output stream, we compute the right encoding parameters */
-    for(i=0;i<nb_ostreams;i++) {
-        ost = ost_table[i];
-        os = output_files[ost->file_index];
-        ist = &input_streams[ost->source_index];
-
-        codec = ost->st->codec;
-        icodec = ist->st->codec;
-
-        if (metadata_streams_autocopy)
-            av_dict_copy(&ost->st->metadata, ist->st->metadata,
-                         AV_DICT_DONT_OVERWRITE);
-
-        ost->st->disposition = ist->st->disposition;
-        codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
-        codec->chroma_sample_location = icodec->chroma_sample_location;
-
-        if (ost->st->stream_copy) {
-            uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
-
-            if (extra_size > INT_MAX)
-                goto fail;
-
-            /* if stream_copy is selected, no need to decode or encode */
-            codec->codec_id = icodec->codec_id;
-            codec->codec_type = icodec->codec_type;
-
-            if(!codec->codec_tag){
-                if(   !os->oformat->codec_tag
-                   || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
-                   || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
-                    codec->codec_tag = icodec->codec_tag;
-            }
-
-            codec->bit_rate = icodec->bit_rate;
-            codec->rc_max_rate    = icodec->rc_max_rate;
-            codec->rc_buffer_size = icodec->rc_buffer_size;
-            codec->extradata= av_mallocz(extra_size);
-            if (!codec->extradata)
-                goto fail;
-            memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
-            codec->extradata_size= icodec->extradata_size;
-            if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
-                codec->time_base = icodec->time_base;
-                codec->time_base.num *= icodec->ticks_per_frame;
-                av_reduce(&codec->time_base.num, &codec->time_base.den,
-                          codec->time_base.num, codec->time_base.den, INT_MAX);
-            }else
-                codec->time_base = ist->st->time_base;
-            switch(codec->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:
-                if(audio_volume != 256) {
-                    fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
-                    exit_program(1);
-                }
-                codec->channel_layout = icodec->channel_layout;
-                codec->sample_rate = icodec->sample_rate;
-                codec->channels = icodec->channels;
-                codec->frame_size = icodec->frame_size;
-                codec->audio_service_type = icodec->audio_service_type;
-                codec->block_align= icodec->block_align;
-                if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
-                    codec->block_align= 0;
-                if(codec->codec_id == CODEC_ID_AC3)
-                    codec->block_align= 0;
-                break;
-            case AVMEDIA_TYPE_VIDEO:
-                codec->pix_fmt = icodec->pix_fmt;
-                codec->width = icodec->width;
-                codec->height = icodec->height;
-                codec->has_b_frames = icodec->has_b_frames;
-                if (!codec->sample_aspect_ratio.num) {
-                    codec->sample_aspect_ratio =
-                    ost->st->sample_aspect_ratio =
-                        ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
-                        ist->st->codec->sample_aspect_ratio.num ?
-                        ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
-                }
-                break;
-            case AVMEDIA_TYPE_SUBTITLE:
-                codec->width = icodec->width;
-                codec->height = icodec->height;
-                break;
-            case AVMEDIA_TYPE_DATA:
-                break;
-            default:
-                abort();
-            }
-        } else {
-            if (!ost->enc)
-                ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
-            switch(codec->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:
-                ost->fifo= av_fifo_alloc(1024);
-                if(!ost->fifo)
-                    goto fail;
-                ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
-                if (!codec->sample_rate) {
-                    codec->sample_rate = icodec->sample_rate;
-                    if (icodec->lowres)
-                        codec->sample_rate >>= icodec->lowres;
-                }
-                choose_sample_rate(ost->st, ost->enc);
-                codec->time_base = (AVRational){1, codec->sample_rate};
-                if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
-                    codec->sample_fmt = icodec->sample_fmt;
-                choose_sample_fmt(ost->st, ost->enc);
-                if (!codec->channels)
-                    codec->channels = icodec->channels;
-                codec->channel_layout = icodec->channel_layout;
-                if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
-                    codec->channel_layout = 0;
-                ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
-                icodec->request_channels = codec->channels;
-                ist->decoding_needed = 1;
-                ost->encoding_needed = 1;
-                ost->resample_sample_fmt  = icodec->sample_fmt;
-                ost->resample_sample_rate = icodec->sample_rate;
-                ost->resample_channels    = icodec->channels;
-                break;
-            case AVMEDIA_TYPE_VIDEO:
-                if (codec->pix_fmt == PIX_FMT_NONE)
-                    codec->pix_fmt = icodec->pix_fmt;
-                choose_pixel_fmt(ost->st, ost->enc);
-
-                if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
-                    fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
-                    exit_program(1);
-                }
-
-                if (!codec->width || !codec->height) {
-                    codec->width  = icodec->width;
-                    codec->height = icodec->height;
-                }
-
-                ost->video_resample = codec->width   != icodec->width  ||
-                                      codec->height  != icodec->height ||
-                                      codec->pix_fmt != icodec->pix_fmt;
-                if (ost->video_resample) {
-#if !CONFIG_AVFILTER
-                    avcodec_get_frame_defaults(&ost->pict_tmp);
-                    if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
-                                       codec->width, codec->height)) {
-                        fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
-                        exit_program(1);
-                    }
-                    ost->img_resample_ctx = sws_getContext(
-                        icodec->width,
-                        icodec->height,
-                        icodec->pix_fmt,
-                        codec->width,
-                        codec->height,
-                        codec->pix_fmt,
-                        ost->sws_flags, NULL, NULL, NULL);
-                    if (ost->img_resample_ctx == NULL) {
-                        fprintf(stderr, "Cannot get resampling context\n");
-                        exit_program(1);
-                    }
-#endif
-                    codec->bits_per_raw_sample= 0;
-                }
-
-                ost->resample_height = icodec->height;
-                ost->resample_width  = icodec->width;
-                ost->resample_pix_fmt= icodec->pix_fmt;
-                ost->encoding_needed = 1;
-                ist->decoding_needed = 1;
-
-                if (!ost->frame_rate.num)
-                    ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
-                if (ost->enc && ost->enc->supported_framerates && !force_fps) {
-                    int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
-                    ost->frame_rate = ost->enc->supported_framerates[idx];
-                }
-                codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
-
-#if CONFIG_AVFILTER
-                if (configure_video_filters(ist, ost)) {
-                    fprintf(stderr, "Error opening filters!\n");
-                    exit(1);
-                }
-#endif
-                break;
-            case AVMEDIA_TYPE_SUBTITLE:
-                ost->encoding_needed = 1;
-                ist->decoding_needed = 1;
-                break;
-            default:
-                abort();
-                break;
-            }
-            /* two pass mode */
-            if (ost->encoding_needed &&
-                (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
-                char logfilename[1024];
-                FILE *f;
-
-                snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
-                         pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
-                         i);
-                if (codec->flags & CODEC_FLAG_PASS1) {
-                    f = fopen(logfilename, "wb");
-                    if (!f) {
-                        fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
-                        exit_program(1);
-                    }
-                    ost->logfile = f;
-                } else {
-                    char  *logbuffer;
-                    size_t logbuffer_size;
-                    if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
-                        fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
-                        exit_program(1);
-                    }
-                    codec->stats_in = logbuffer;
-                }
-            }
-        }
-        if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
-            int size= codec->width * codec->height;
-            bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
-        }
-    }
-
-    if (!bit_buffer)
-        bit_buffer = av_malloc(bit_buffer_size);
-    if (!bit_buffer) {
-        fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
-                bit_buffer_size);
-        ret = AVERROR(ENOMEM);
-        goto fail;
-    }
-
-    /* open each encoder */
-    for(i=0;i<nb_ostreams;i++) {
-        ost = ost_table[i];
-        if (ost->encoding_needed) {
-            AVCodec *codec = ost->enc;
-            AVCodecContext *dec = input_streams[ost->source_index].st->codec;
-            if (!codec) {
-                snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
-                         ost->st->codec->codec_id, ost->file_index, ost->index);
-                ret = AVERROR(EINVAL);
-                goto dump_format;
-            }
-            if (dec->subtitle_header) {
-                ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
-                if (!ost->st->codec->subtitle_header) {
-                    ret = AVERROR(ENOMEM);
-                    goto dump_format;
-                }
-                memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
-                ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
-            }
-            if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
-                snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
-                        ost->file_index, ost->index);
-                ret = AVERROR(EINVAL);
-                goto dump_format;
-            }
-            assert_codec_experimental(ost->st->codec, 1);
-            assert_avoptions(ost->opts);
-            if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
-                av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
-                                             "It takes bits/s as argument, not kbits/s\n");
-            extra_size += ost->st->codec->extradata_size;
-        }
-    }
-
-    /* open each decoder */
-    for (i = 0; i < nb_input_streams; i++) {
-        ist = &input_streams[i];
-        if (ist->decoding_needed) {
-            AVCodec *codec = ist->dec;
-            if (!codec)
-                codec = avcodec_find_decoder(ist->st->codec->codec_id);
-            if (!codec) {
-                snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
-                        ist->st->codec->codec_id, ist->file_index, ist->st->index);
-                ret = AVERROR(EINVAL);
-                goto dump_format;
-            }
-
-            /* update requested sample format for the decoder based on the
-               corresponding encoder sample format */
-            for (j = 0; j < nb_ostreams; j++) {
-                ost = ost_table[j];
-                if (ost->source_index == i) {
-                    update_sample_fmt(ist->st->codec, codec, ost->st->codec);
-                    break;
-                }
-            }
-
-            if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
-                snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
-                        ist->file_index, ist->st->index);
-                ret = AVERROR(EINVAL);
-                goto dump_format;
-            }
-            assert_codec_experimental(ist->st->codec, 0);
-            assert_avoptions(ost->opts);
-        }
-    }
-
-    /* init pts */
-    for (i = 0; i < nb_input_streams; i++) {
-        AVStream *st;
-        ist = &input_streams[i];
-        st= ist->st;
-        ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
-        ist->next_pts = AV_NOPTS_VALUE;
-        init_pts_correction(&ist->pts_ctx);
-        ist->is_start = 1;
-    }
-
-    /* set meta data information from input file if required */
-    for (i=0;i<nb_meta_data_maps;i++) {
-        AVFormatContext *files[2];
-        AVDictionary    **meta[2];
-        int j;
-
-#define METADATA_CHECK_INDEX(index, nb_elems, desc)\
-        if ((index) < 0 || (index) >= (nb_elems)) {\
-            snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
-                     (desc), (index));\
-            ret = AVERROR(EINVAL);\
-            goto dump_format;\
-        }
-
-        int out_file_index = meta_data_maps[i][0].file;
-        int in_file_index = meta_data_maps[i][1].file;
-        if (in_file_index < 0 || out_file_index < 0)
-            continue;
-        METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
-        METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
-
-        files[0] = output_files[out_file_index];
-        files[1] = input_files[in_file_index].ctx;
-
-        for (j = 0; j < 2; j++) {
-            MetadataMap *map = &meta_data_maps[i][j];
-
-            switch (map->type) {
-            case 'g':
-                meta[j] = &files[j]->metadata;
-                break;
-            case 's':
-                METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
-                meta[j] = &files[j]->streams[map->index]->metadata;
-                break;
-            case 'c':
-                METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
-                meta[j] = &files[j]->chapters[map->index]->metadata;
-                break;
-            case 'p':
-                METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
-                meta[j] = &files[j]->programs[map->index]->metadata;
-                break;
-            }
-        }
-
-        av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
-    }
-
-    /* copy global metadata by default */
-    if (metadata_global_autocopy) {
-
-        for (i = 0; i < nb_output_files; i++)
-            av_dict_copy(&output_files[i]->metadata, input_files[0].ctx->metadata,
-                         AV_DICT_DONT_OVERWRITE);
-    }
-
-    /* copy chapters according to chapter maps */
-    for (i = 0; i < nb_chapter_maps; i++) {
-        int infile  = chapter_maps[i].in_file;
-        int outfile = chapter_maps[i].out_file;
-
-        if (infile < 0 || outfile < 0)
-            continue;
-        if (infile >= nb_input_files) {
-            snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
-            ret = AVERROR(EINVAL);
-            goto dump_format;
-        }
-        if (outfile >= nb_output_files) {
-            snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
-            ret = AVERROR(EINVAL);
-            goto dump_format;
-        }
-        copy_chapters(infile, outfile);
-    }
-
-    /* copy chapters from the first input file that has them*/
-    if (!nb_chapter_maps)
-        for (i = 0; i < nb_input_files; i++) {
-            if (!input_files[i].ctx->nb_chapters)
-                continue;
-
-            for (j = 0; j < nb_output_files; j++)
-                if ((ret = copy_chapters(i, j)) < 0)
-                    goto dump_format;
-            break;
-        }
-
-    /* open files and write file headers */
-    for(i=0;i<nb_output_files;i++) {
-        os = output_files[i];
-        if (avformat_write_header(os, &output_opts[i]) < 0) {
-            snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
-            ret = AVERROR(EINVAL);
-            goto dump_format;
-        }
-        assert_avoptions(output_opts[i]);
-        if (strcmp(output_files[i]->oformat->name, "rtp")) {
-            want_sdp = 0;
-        }
-    }
-
- dump_format:
-    /* dump the file output parameters - cannot be done before in case
-       of stream copy */
-    for(i=0;i<nb_output_files;i++) {
-        av_dump_format(output_files[i], i, output_files[i]->filename, 1);
-    }
-
-    /* dump the stream mapping */
-    if (verbose >= 0) {
-        fprintf(stderr, "Stream mapping:\n");
-        for(i=0;i<nb_ostreams;i++) {
-            ost = ost_table[i];
-            fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
-                    input_streams[ost->source_index].file_index,
-                    input_streams[ost->source_index].st->index,
-                    ost->file_index,
-                    ost->index);
-            if (ost->sync_ist != &input_streams[ost->source_index])
-                fprintf(stderr, " [sync #%d.%d]",
-                        ost->sync_ist->file_index,
-                        ost->sync_ist->st->index);
-            fprintf(stderr, "\n");
-        }
-    }
-
-    if (ret) {
-        fprintf(stderr, "%s\n", error);
-        goto fail;
-    }
-
-    if (want_sdp) {
-        print_sdp(output_files, nb_output_files);
-    }
-
-    if (verbose >= 0)
-        fprintf(stderr, "Press ctrl-c to stop encoding\n");
-    term_init();
-
-    timer_start = av_gettime();
-
-    for(; received_sigterm == 0;) {
-        int file_index, ist_index;
-        AVPacket pkt;
-        double ipts_min;
-        double opts_min;
-
-    redo:
-        ipts_min= 1e100;
-        opts_min= 1e100;
-
-        /* select the stream that we must read now by looking at the
-           smallest output pts */
-        file_index = -1;
-        for(i=0;i<nb_ostreams;i++) {
-            double ipts, opts;
-            ost = ost_table[i];
-            os = output_files[ost->file_index];
-            ist = &input_streams[ost->source_index];
-            if(ist->is_past_recording_time || no_packet[ist->file_index])
-                continue;
-                opts = ost->st->pts.val * av_q2d(ost->st->time_base);
-            ipts = (double)ist->pts;
-            if (!input_files[ist->file_index].eof_reached){
-                if(ipts < ipts_min) {
-                    ipts_min = ipts;
-                    if(input_sync ) file_index = ist->file_index;
-                }
-                if(opts < opts_min) {
-                    opts_min = opts;
-                    if(!input_sync) file_index = ist->file_index;
-                }
-            }
-            if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
-                file_index= -1;
-                break;
-            }
-        }
-        /* if none, if is finished */
-        if (file_index < 0) {
-            if(no_packet_count){
-                no_packet_count=0;
-                memset(no_packet, 0, sizeof(no_packet));
-                usleep(10000);
-                continue;
-            }
-            break;
-        }
-
-        /* finish if limit size exhausted */
-        if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
-            break;
-
-        /* read a frame from it and output it in the fifo */
-        is = input_files[file_index].ctx;
-        ret= av_read_frame(is, &pkt);
-        if(ret == AVERROR(EAGAIN)){
-            no_packet[file_index]=1;
-            no_packet_count++;
-            continue;
-        }
-        if (ret < 0) {
-            input_files[file_index].eof_reached = 1;
-            if (opt_shortest)
-                break;
-            else
-                continue;
-        }
-
-        no_packet_count=0;
-        memset(no_packet, 0, sizeof(no_packet));
-
-        if (do_pkt_dump) {
-            av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
-                             is->streams[pkt.stream_index]);
-        }
-        /* the following test is needed in case new streams appear
-           dynamically in stream : we ignore them */
-        if (pkt.stream_index >= input_files[file_index].nb_streams)
-            goto discard_packet;
-        ist_index = input_files[file_index].ist_index + pkt.stream_index;
-        ist = &input_streams[ist_index];
-        if (ist->discard)
-            goto discard_packet;
-
-        if (pkt.dts != AV_NOPTS_VALUE)
-            pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
-        if (pkt.pts != AV_NOPTS_VALUE)
-            pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
-
-        if (ist->ts_scale) {
-            if(pkt.pts != AV_NOPTS_VALUE)
-                pkt.pts *= ist->ts_scale;
-            if(pkt.dts != AV_NOPTS_VALUE)
-                pkt.dts *= ist->ts_scale;
-        }
-
-//        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
-        if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
-            && (is->iformat->flags & AVFMT_TS_DISCONT)) {
-            int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
-            int64_t delta= pkt_dts - ist->next_pts;
-            if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
-                input_files[ist->file_index].ts_offset -= delta;
-                if (verbose > 2)
-                    fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
-                            delta, input_files[ist->file_index].ts_offset);
-                pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
-                if(pkt.pts != AV_NOPTS_VALUE)
-                    pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
-            }
-        }
-
-        /* finish if recording time exhausted */
-        if (recording_time != INT64_MAX &&
-            av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
-            ist->is_past_recording_time = 1;
-            goto discard_packet;
-        }
-
-        //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
-        if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
-
-            if (verbose >= 0)
-                fprintf(stderr, "Error while decoding stream #%d.%d\n",
-                        ist->file_index, ist->st->index);
-            if (exit_on_error)
-                exit_program(1);
-            av_free_packet(&pkt);
-            goto redo;
-        }
-
-    discard_packet:
-        av_free_packet(&pkt);
-
-        /* dump report by using the output first video and audio streams */
-        print_report(output_files, ost_table, nb_ostreams, 0);
-    }
-
-    /* at the end of stream, we must flush the decoder buffers */
-    for (i = 0; i < nb_input_streams; i++) {
-        ist = &input_streams[i];
-        if (ist->decoding_needed) {
-            output_packet(ist, i, ost_table, nb_ostreams, NULL);
-        }
-    }
-
-    term_exit();
-
-    /* write the trailer if needed and close file */
-    for(i=0;i<nb_output_files;i++) {
-        os = output_files[i];
-        av_write_trailer(os);
-    }
-
-    /* dump report by using the first video and audio streams */
-    print_report(output_files, ost_table, nb_ostreams, 1);
-
-    /* close each encoder */
-    for(i=0;i<nb_ostreams;i++) {
-        ost = ost_table[i];
-        if (ost->encoding_needed) {
-            av_freep(&ost->st->codec->stats_in);
-            avcodec_close(ost->st->codec);
-        }
-#if CONFIG_AVFILTER
-        avfilter_graph_free(&ost->graph);
-#endif
-    }
-
-    /* close each decoder */
-    for (i = 0; i < nb_input_streams; i++) {
-        ist = &input_streams[i];
-        if (ist->decoding_needed) {
-            avcodec_close(ist->st->codec);
-        }
-    }
-
-    /* finished ! */
-    ret = 0;
-
- fail:
-    av_freep(&bit_buffer);
-
-    if (ost_table) {
-        for(i=0;i<nb_ostreams;i++) {
-            ost = ost_table[i];
-            if (ost) {
-                if (ost->st->stream_copy)
-                    av_freep(&ost->st->codec->extradata);
-                if (ost->logfile) {
-                    fclose(ost->logfile);
-                    ost->logfile = NULL;
-                }
-                av_fifo_free(ost->fifo); /* works even if fifo is not
-                                             initialized but set to zero */
-                av_freep(&ost->st->codec->subtitle_header);
-                av_free(ost->pict_tmp.data[0]);
-                av_free(ost->forced_kf_pts);
-                if (ost->video_resample)
-                    sws_freeContext(ost->img_resample_ctx);
-                if (ost->resample)
-                    audio_resample_close(ost->resample);
-                if (ost->reformat_ctx)
-                    av_audio_convert_free(ost->reformat_ctx);
-                av_dict_free(&ost->opts);
-                av_free(ost);
-            }
-        }
-        av_free(ost_table);
-    }
-    return ret;
-}
-
-static int opt_format(const char *opt, const char *arg)
-{
-    last_asked_format = arg;
-    return 0;
-}
-
-static int opt_video_rc_override_string(const char *opt, const char *arg)
-{
-    video_rc_override_string = arg;
-    return 0;
-}
-
-static int opt_me_threshold(const char *opt, const char *arg)
-{
-    me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
-    return 0;
-}
-
-static int opt_verbose(const char *opt, const char *arg)
-{
-    verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
-    return 0;
-}
-
-static int opt_frame_rate(const char *opt, const char *arg)
-{
-    if (av_parse_video_rate(&frame_rate, arg) < 0) {
-        fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
-        exit_program(1);
-    }
-    return 0;
-}
-
-static int opt_frame_crop(const char *opt, const char *arg)
-{
-    fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
-    return AVERROR(EINVAL);
-}
-
-static int opt_frame_size(const char *opt, const char *arg)
-{
-    if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
-        fprintf(stderr, "Incorrect frame size\n");
-        return AVERROR(EINVAL);
-    }
-    return 0;
-}
-
-static int opt_pad(const char *opt, const char *arg) {
-    fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
-    return -1;
-}
-
-static int opt_frame_pix_fmt(const char *opt, const char *arg)
-{
-    if (strcmp(arg, "list")) {
-        frame_pix_fmt = av_get_pix_fmt(arg);
-        if (frame_pix_fmt == PIX_FMT_NONE) {
-            fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
-            return AVERROR(EINVAL);
-        }
-    } else {
-        show_pix_fmts();
-        exit_program(0);
-    }
-    return 0;
-}
-
-static int opt_frame_aspect_ratio(const char *opt, const char *arg)
-{
-    int x = 0, y = 0;
-    double ar = 0;
-    const char *p;
-    char *end;
-
-    p = strchr(arg, ':');
-    if (p) {
-        x = strtol(arg, &end, 10);
-        if (end == p)
-            y = strtol(end+1, &end, 10);
-        if (x > 0 && y > 0)
-            ar = (double)x / (double)y;
-    } else
-        ar = strtod(arg, NULL);
-
-    if (!ar) {
-        fprintf(stderr, "Incorrect aspect ratio specification.\n");
-        return AVERROR(EINVAL);
-    }
-    frame_aspect_ratio = ar;
-    return 0;
-}
-
-static int opt_metadata(const char *opt, const char *arg)
-{
-    char *mid= strchr(arg, '=');
-
-    if(!mid){
-        fprintf(stderr, "Missing =\n");
-        exit_program(1);
-    }
-    *mid++= 0;
-
-    av_dict_set(&metadata, arg, mid, 0);
-
-    return 0;
-}
-
-static int opt_qscale(const char *opt, const char *arg)
-{
-    video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
-    if (video_qscale == 0) {
-        fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
-        return AVERROR(EINVAL);
-    }
-    return 0;
-}
-
-static int opt_top_field_first(const char *opt, const char *arg)
-{
-    top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
-    return 0;
-}
-
-static int opt_thread_count(const char *opt, const char *arg)
-{
-    thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
-#if !HAVE_THREADS
-    if (verbose >= 0)
-        fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
-#endif
-    return 0;
-}
-
-static int opt_audio_sample_fmt(const char *opt, const char *arg)
-{
-    if (strcmp(arg, "list")) {
-        audio_sample_fmt = av_get_sample_fmt(arg);
-        if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
-            av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
-            return AVERROR(EINVAL);
-        }
-    } else {
-        int i;
-        char fmt_str[128];
-        for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
-            printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
-        exit_program(0);
-    }
-    return 0;
-}
-
-static int opt_audio_rate(const char *opt, const char *arg)
-{
-    audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
-    return 0;
-}
-
-static int opt_audio_channels(const char *opt, const char *arg)
-{
-    audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
-    return 0;
-}
-
-static int opt_video_channel(const char *opt, const char *arg)
-{
-    av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
-    opt_default("channel", arg);
-    return 0;
-}
-
-static int opt_video_standard(const char *opt, const char *arg)
-{
-    av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
-    opt_default("standard", arg);
-    return 0;
-}
-
-static int opt_codec(int *pstream_copy, char **pcodec_name,
-                      int codec_type, const char *arg)
-{
-    av_freep(pcodec_name);
-    if (!strcmp(arg, "copy")) {
-        *pstream_copy = 1;
-    } else {
-        *pcodec_name = av_strdup(arg);
-    }
-    return 0;
-}
-
-static int opt_audio_codec(const char *opt, const char *arg)
-{
-    return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
-}
-
-static int opt_video_codec(const char *opt, const char *arg)
-{
-    return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
-}
-
-static int opt_subtitle_codec(const char *opt, const char *arg)
-{
-    return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
-}
-
-static int opt_data_codec(const char *opt, const char *arg)
-{
-    return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
-}
-
-static int opt_codec_tag(const char *opt, const char *arg)
-{
-    char *tail;
-    uint32_t *codec_tag;
-
-    codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
-                !strcmp(opt, "vtag") ? &video_codec_tag :
-                !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
-    if (!codec_tag)
-        return -1;
-
-    *codec_tag = strtol(arg, &tail, 0);
-    if (!tail || *tail)
-        *codec_tag = AV_RL32(arg);
-
-    return 0;
-}
-
-static int opt_map(const char *opt, const char *arg)
-{
-    StreamMap *m;
-    char *p;
-
-    stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
-    m = &stream_maps[nb_stream_maps-1];
-
-    m->file_index = strtol(arg, &p, 0);
-    if (*p)
-        p++;
-
-    m->stream_index = strtol(p, &p, 0);
-    if (*p) {
-        p++;
-        m->sync_file_index = strtol(p, &p, 0);
-        if (*p)
-            p++;
-        m->sync_stream_index = strtol(p, &p, 0);
-    } else {
-        m->sync_file_index = m->file_index;
-        m->sync_stream_index = m->stream_index;
-    }
-    return 0;
-}
-
-static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
-{
-    *endptr = arg;
-    if (*arg == ',') {
-        *type = *(++arg);
-        switch (*arg) {
-        case 'g':
-            break;
-        case 's':
-        case 'c':
-        case 'p':
-            *index = strtol(++arg, endptr, 0);
-            break;
-        default:
-            fprintf(stderr, "Invalid metadata type %c.\n", *arg);
-            exit_program(1);
-        }
-    } else
-        *type = 'g';
-}
-
-static int opt_map_metadata(const char *opt, const char *arg)
-{
-    MetadataMap *m, *m1;
-    char *p;
-
-    meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
-                                &nb_meta_data_maps, nb_meta_data_maps + 1);
-
-    m = &meta_data_maps[nb_meta_data_maps - 1][0];
-    m->file = strtol(arg, &p, 0);
-    parse_meta_type(p, &m->type, &m->index, &p);
-    if (*p)
-        p++;
-
-    m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
-    m1->file = strtol(p, &p, 0);
-    parse_meta_type(p, &m1->type, &m1->index, &p);
-
-    if (m->type == 'g' || m1->type == 'g')
-        metadata_global_autocopy = 0;
-    if (m->type == 's' || m1->type == 's')
-        metadata_streams_autocopy = 0;
-    if (m->type == 'c' || m1->type == 'c')
-        metadata_chapters_autocopy = 0;
-
-    return 0;
-}
-
-static int opt_map_meta_data(const char *opt, const char *arg)
-{
-    fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
-                    "Use -map_metadata instead.\n");
-    return opt_map_metadata(opt, arg);
-}
-
-static int opt_map_chapters(const char *opt, const char *arg)
-{
-    ChapterMap *c;
-    char *p;
-
-    chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
-                              nb_chapter_maps + 1);
-    c = &chapter_maps[nb_chapter_maps - 1];
-    c->out_file = strtol(arg, &p, 0);
-    if (*p)
-        p++;
-
-    c->in_file = strtol(p, &p, 0);
-    return 0;
-}
-
-static int opt_input_ts_scale(const char *opt, const char *arg)
-{
-    unsigned int stream;
-    double scale;
-    char *p;
-
-    stream = strtol(arg, &p, 0);
-    if (*p)
-        p++;
-    scale= strtod(p, &p);
-
-    ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
-    ts_scale[stream] = scale;
-    return 0;
-}
-
-static int opt_recording_time(const char *opt, const char *arg)
-{
-    recording_time = parse_time_or_die(opt, arg, 1);
-    return 0;
-}
-
-static int opt_start_time(const char *opt, const char *arg)
-{
-    start_time = parse_time_or_die(opt, arg, 1);
-    return 0;
-}
-
-static int opt_recording_timestamp(const char *opt, const char *arg)
-{
-    char buf[128];
-    int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
-    struct tm time = *gmtime((time_t*)&recording_timestamp);
-    strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
-    opt_metadata("metadata", buf);
-
-    av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
-                                 "tag instead.\n", opt);
-    return 0;
-}
-
-static int opt_input_ts_offset(const char *opt, const char *arg)
-{
-    input_ts_offset = parse_time_or_die(opt, arg, 1);
-    return 0;
-}
-
-static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
-{
-    const char *codec_string = encoder ? "encoder" : "decoder";
-    AVCodec *codec;
-
-    if(!name)
-        return CODEC_ID_NONE;
-    codec = encoder ?
-        avcodec_find_encoder_by_name(name) :
-        avcodec_find_decoder_by_name(name);
-    if(!codec) {
-        fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
-        exit_program(1);
-    }
-    if(codec->type != type) {
-        fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
-        exit_program(1);
-    }
-    return codec->id;
-}
-
-static int opt_input_file(const char *opt, const char *filename)
-{
-    AVFormatContext *ic;
-    AVInputFormat *file_iformat = NULL;
-    int err, i, ret, rfps, rfps_base;
-    int64_t timestamp;
-    uint8_t buf[128];
-    AVDictionary **opts;
-    int orig_nb_streams;                     // number of streams before avformat_find_stream_info
-
-    if (last_asked_format) {
-        if (!(file_iformat = av_find_input_format(last_asked_format))) {
-            fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
-            exit_program(1);
-        }
-        last_asked_format = NULL;
-    }
-
-    if (!strcmp(filename, "-"))
-        filename = "pipe:";
-
-    using_stdin |= !strncmp(filename, "pipe:", 5) ||
-                    !strcmp(filename, "/dev/stdin");
-
-    /* get default parameters from command line */
-    ic = avformat_alloc_context();
-    if (!ic) {
-        print_error(filename, AVERROR(ENOMEM));
-        exit_program(1);
-    }
-    if (audio_sample_rate) {
-        snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
-        av_dict_set(&format_opts, "sample_rate", buf, 0);
-    }
-    if (audio_channels) {
-        snprintf(buf, sizeof(buf), "%d", audio_channels);
-        av_dict_set(&format_opts, "channels", buf, 0);
-    }
-    if (frame_rate.num) {
-        snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
-        av_dict_set(&format_opts, "framerate", buf, 0);
-    }
-    if (frame_width && frame_height) {
-        snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
-        av_dict_set(&format_opts, "video_size", buf, 0);
-    }
-    if (frame_pix_fmt != PIX_FMT_NONE)
-        av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
-
-    ic->video_codec_id   =
-        find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0);
-    ic->audio_codec_id   =
-        find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0);
-    ic->subtitle_codec_id=
-        find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
-    ic->flags |= AVFMT_FLAG_NONBLOCK;
-
-    /* open the input file with generic libav function */
-    err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
-    if (err < 0) {
-        print_error(filename, err);
-        exit_program(1);
-    }
-    assert_avoptions(format_opts);
-
-    if(opt_programid) {
-        int i, j;
-        int found=0;
-        for(i=0; i<ic->nb_streams; i++){
-            ic->streams[i]->discard= AVDISCARD_ALL;
-        }
-        for(i=0; i<ic->nb_programs; i++){
-            AVProgram *p= ic->programs[i];
-            if(p->id != opt_programid){
-                p->discard = AVDISCARD_ALL;
-            }else{
-                found=1;
-                for(j=0; j<p->nb_stream_indexes; j++){
-                    ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
-                }
-            }
-        }
-        if(!found){
-            fprintf(stderr, "Specified program id not found\n");
-            exit_program(1);
-        }
-        opt_programid=0;
-    }
-
-    if (loop_input) {
-        av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
-        ic->loop_input = loop_input;
-    }
-
-    /* Set AVCodecContext options for avformat_find_stream_info */
-    opts = setup_find_stream_info_opts(ic, codec_opts);
-    orig_nb_streams = ic->nb_streams;
-
-    /* If not enough info to get the stream parameters, we decode the
-       first frames to get it. (used in mpeg case for example) */
-    ret = avformat_find_stream_info(ic, opts);
-    if (ret < 0 && verbose >= 0) {
-        fprintf(stderr, "%s: could not find codec parameters\n", filename);
-        av_close_input_file(ic);
-        exit_program(1);
-    }
-
-    timestamp = start_time;
-    /* add the stream start time */
-    if (ic->start_time != AV_NOPTS_VALUE)
-        timestamp += ic->start_time;
-
-    /* if seeking requested, we execute it */
-    if (start_time != 0) {
-        ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
-        if (ret < 0) {
-            fprintf(stderr, "%s: could not seek to position %0.3f\n",
-                    filename, (double)timestamp / AV_TIME_BASE);
-        }
-        /* reset seek info */
-        start_time = 0;
-    }
-
-    /* update the current parameters so that they match the one of the input stream */
-    for(i=0;i<ic->nb_streams;i++) {
-        AVStream *st = ic->streams[i];
-        AVCodecContext *dec = st->codec;
-        InputStream *ist;
-
-        dec->thread_count = thread_count;
-
-        input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
-        ist = &input_streams[nb_input_streams - 1];
-        ist->st = st;
-        ist->file_index = nb_input_files;
-        ist->discard = 1;
-        ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
-
-        if (i < nb_ts_scale)
-            ist->ts_scale = ts_scale[i];
-
-        switch (dec->codec_type) {
-        case AVMEDIA_TYPE_AUDIO:
-            ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
-            if(audio_disable)
-                st->discard= AVDISCARD_ALL;
-            break;
-        case AVMEDIA_TYPE_VIDEO:
-            ist->dec = avcodec_find_decoder_by_name(video_codec_name);
-            rfps      = ic->streams[i]->r_frame_rate.num;
-            rfps_base = ic->streams[i]->r_frame_rate.den;
-            if (dec->lowres) {
-                dec->flags |= CODEC_FLAG_EMU_EDGE;
-                dec->height >>= dec->lowres;
-                dec->width  >>= dec->lowres;
-            }
-            if(me_threshold)
-                dec->debug |= FF_DEBUG_MV;
-
-            if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
-
-                if (verbose >= 0)
-                    fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
-                            i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
-
-                    (float)rfps / rfps_base, rfps, rfps_base);
-            }
-
-            if(video_disable)
-                st->discard= AVDISCARD_ALL;
-            else if(video_discard)
-                st->discard= video_discard;
-            break;
-        case AVMEDIA_TYPE_DATA:
-            break;
-        case AVMEDIA_TYPE_SUBTITLE:
-            ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
-            if(subtitle_disable)
-                st->discard = AVDISCARD_ALL;
-            break;
-        case AVMEDIA_TYPE_ATTACHMENT:
-        case AVMEDIA_TYPE_UNKNOWN:
-            break;
-        default:
-            abort();
-        }
-    }
-
-    /* dump the file content */
-    if (verbose >= 0)
-        av_dump_format(ic, nb_input_files, filename, 0);
-
-    input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
-    input_files[nb_input_files - 1].ctx        = ic;
-    input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
-    input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
-    input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
-
-    frame_rate    = (AVRational){0, 0};
-    frame_pix_fmt = PIX_FMT_NONE;
-    frame_height = 0;
-    frame_width  = 0;
-    audio_sample_rate = 0;
-    audio_channels    = 0;
-    audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
-    av_freep(&ts_scale);
-    nb_ts_scale = 0;
-
-    for (i = 0; i < orig_nb_streams; i++)
-        av_dict_free(&opts[i]);
-    av_freep(&opts);
-    av_freep(&video_codec_name);
-    av_freep(&audio_codec_name);
-    av_freep(&subtitle_codec_name);
-    uninit_opts();
-    init_opts();
-    return 0;
-}
-
-static void check_inputs(int *has_video_ptr,
-                         int *has_audio_ptr,
-                         int *has_subtitle_ptr,
-                         int *has_data_ptr)
-{
-    int has_video, has_audio, has_subtitle, has_data, i, j;
-    AVFormatContext *ic;
-
-    has_video = 0;
-    has_audio = 0;
-    has_subtitle = 0;
-    has_data = 0;
-
-    for(j=0;j<nb_input_files;j++) {
-        ic = input_files[j].ctx;
-        for(i=0;i<ic->nb_streams;i++) {
-            AVCodecContext *enc = ic->streams[i]->codec;
-            switch(enc->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:
-                has_audio = 1;
-                break;
-            case AVMEDIA_TYPE_VIDEO:
-                has_video = 1;
-                break;
-            case AVMEDIA_TYPE_SUBTITLE:
-                has_subtitle = 1;
-                break;
-            case AVMEDIA_TYPE_DATA:
-            case AVMEDIA_TYPE_ATTACHMENT:
-            case AVMEDIA_TYPE_UNKNOWN:
-                has_data = 1;
-                break;
-            default:
-                abort();
-            }
-        }
-    }
-    *has_video_ptr = has_video;
-    *has_audio_ptr = has_audio;
-    *has_subtitle_ptr = has_subtitle;
-    *has_data_ptr = has_data;
-}
-
-static void new_video_stream(AVFormatContext *oc, int file_idx)
-{
-    AVStream *st;
-    OutputStream *ost;
-    AVCodecContext *video_enc;
-    enum CodecID codec_id = CODEC_ID_NONE;
-    AVCodec *codec= NULL;
-
-    if(!video_stream_copy){
-        if (video_codec_name) {
-            codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1);
-            codec = avcodec_find_encoder_by_name(video_codec_name);
-        } else {
-            codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
-            codec = avcodec_find_encoder(codec_id);
-        }
-    }
-
-    ost = new_output_stream(oc, file_idx, codec);
-    st  = ost->st;
-    if (!video_stream_copy) {
-        ost->frame_aspect_ratio = frame_aspect_ratio;
-        frame_aspect_ratio = 0;
-#if CONFIG_AVFILTER
-        ost->avfilter= vfilters;
-        vfilters = NULL;
-#endif
-    }
-
-    ost->bitstream_filters = video_bitstream_filters;
-    video_bitstream_filters= NULL;
-
-    st->codec->thread_count= thread_count;
-
-    video_enc = st->codec;
-
-    if(video_codec_tag)
-        video_enc->codec_tag= video_codec_tag;
-
-    if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
-        video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
-    }
-
-    video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
-    if (video_stream_copy) {
-        st->stream_copy = 1;
-        video_enc->sample_aspect_ratio =
-        st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
-    } else {
-        const char *p;
-        int i;
-
-        if (frame_rate.num)
-            ost->frame_rate = frame_rate;
-        video_enc->codec_id = codec_id;
-
-        video_enc->width = frame_width;
-        video_enc->height = frame_height;
-        video_enc->pix_fmt = frame_pix_fmt;
-        st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
-
-        if (intra_only)
-            video_enc->gop_size = 0;
-        if (video_qscale || same_quality) {
-            video_enc->flags |= CODEC_FLAG_QSCALE;
-            video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
-        }
-
-        if(intra_matrix)
-            video_enc->intra_matrix = intra_matrix;
-        if(inter_matrix)
-            video_enc->inter_matrix = inter_matrix;
-
-        p= video_rc_override_string;
-        for(i=0; p; i++){
-            int start, end, q;
-            int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
-            if(e!=3){
-                fprintf(stderr, "error parsing rc_override\n");
-                exit_program(1);
-            }
-            video_enc->rc_override=
-                av_realloc(video_enc->rc_override,
-                           sizeof(RcOverride)*(i+1));
-            video_enc->rc_override[i].start_frame= start;
-            video_enc->rc_override[i].end_frame  = end;
-            if(q>0){
-                video_enc->rc_override[i].qscale= q;
-                video_enc->rc_override[i].quality_factor= 1.0;
-            }
-            else{
-                video_enc->rc_override[i].qscale= 0;
-                video_enc->rc_override[i].quality_factor= -q/100.0;
-            }
-            p= strchr(p, '/');
-            if(p) p++;
-        }
-        video_enc->rc_override_count=i;
-        if (!video_enc->rc_initial_buffer_occupancy)
-            video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
-        video_enc->me_threshold= me_threshold;
-        video_enc->intra_dc_precision= intra_dc_precision - 8;
-
-        if (do_psnr)
-            video_enc->flags|= CODEC_FLAG_PSNR;
-
-        /* two pass mode */
-        if (do_pass) {
-            if (do_pass == 1) {
-                video_enc->flags |= CODEC_FLAG_PASS1;
-            } else {
-                video_enc->flags |= CODEC_FLAG_PASS2;
-            }
-        }
-
-        if (forced_key_frames)
-            parse_forced_key_frames(forced_key_frames, ost, video_enc);
-    }
-    if (video_language) {
-        av_dict_set(&st->metadata, "language", video_language, 0);
-        av_freep(&video_language);
-    }
-
-    /* reset some key parameters */
-    video_disable = 0;
-    av_freep(&video_codec_name);
-    av_freep(&forced_key_frames);
-    video_stream_copy = 0;
-    frame_pix_fmt = PIX_FMT_NONE;
-}
-
-static void new_audio_stream(AVFormatContext *oc, int file_idx)
-{
-    AVStream *st;
-    OutputStream *ost;
-    AVCodec *codec= NULL;
-    AVCodecContext *audio_enc;
-    enum CodecID codec_id = CODEC_ID_NONE;
-
-    if(!audio_stream_copy){
-        if (audio_codec_name) {
-            codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1);
-            codec = avcodec_find_encoder_by_name(audio_codec_name);
-        } else {
-            codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
-            codec = avcodec_find_encoder(codec_id);
-        }
-    }
-    ost = new_output_stream(oc, file_idx, codec);
-    st  = ost->st;
-
-    ost->bitstream_filters = audio_bitstream_filters;
-    audio_bitstream_filters= NULL;
-
-    st->codec->thread_count= thread_count;
-
-    audio_enc = st->codec;
-    audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
-
-    if(audio_codec_tag)
-        audio_enc->codec_tag= audio_codec_tag;
-
-    if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
-        audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
-    }
-    if (audio_stream_copy) {
-        st->stream_copy = 1;
-    } else {
-        audio_enc->codec_id = codec_id;
-
-        if (audio_qscale > QSCALE_NONE) {
-            audio_enc->flags |= CODEC_FLAG_QSCALE;
-            audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
-        }
-        if (audio_channels)
-            audio_enc->channels = audio_channels;
-        if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
-            audio_enc->sample_fmt = audio_sample_fmt;
-        if (audio_sample_rate)
-            audio_enc->sample_rate = audio_sample_rate;
-    }
-    if (audio_language) {
-        av_dict_set(&st->metadata, "language", audio_language, 0);
-        av_freep(&audio_language);
-    }
-
-    /* reset some key parameters */
-    audio_disable = 0;
-    av_freep(&audio_codec_name);
-    audio_stream_copy = 0;
-}
-
-static void new_data_stream(AVFormatContext *oc, int file_idx)
-{
-    AVStream *st;
-    OutputStream *ost;
-    AVCodecContext *data_enc;
-
-    ost = new_output_stream(oc, file_idx, NULL);
-    st  = ost->st;
-    data_enc = st->codec;
-    if (!data_stream_copy) {
-        fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
-        exit_program(1);
-    }
-
-    data_enc->codec_type = AVMEDIA_TYPE_DATA;
-
-    if (data_codec_tag)
-        data_enc->codec_tag= data_codec_tag;
-
-    if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
-        data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
-    }
-    if (data_stream_copy) {
-        st->stream_copy = 1;
-    }
-
-    data_disable = 0;
-    av_freep(&data_codec_name);
-    data_stream_copy = 0;
-}
-
-static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
-{
-    AVStream *st;
-    OutputStream *ost;
-    AVCodec *codec=NULL;
-    AVCodecContext *subtitle_enc;
-    enum CodecID codec_id = CODEC_ID_NONE;
-
-    if(!subtitle_stream_copy){
-        if (subtitle_codec_name) {
-            codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1);
-            codec = avcodec_find_encoder_by_name(subtitle_codec_name);
-        } else {
-            codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
-            codec = avcodec_find_encoder(codec_id);
-        }
-    }
-    ost = new_output_stream(oc, file_idx, codec);
-    st  = ost->st;
-    subtitle_enc = st->codec;
-
-    ost->bitstream_filters = subtitle_bitstream_filters;
-    subtitle_bitstream_filters= NULL;
-
-    subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
-
-    if(subtitle_codec_tag)
-        subtitle_enc->codec_tag= subtitle_codec_tag;
-
-    if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
-        subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
-    }
-    if (subtitle_stream_copy) {
-        st->stream_copy = 1;
-    } else {
-        subtitle_enc->codec_id = codec_id;
-    }
-
-    if (subtitle_language) {
-        av_dict_set(&st->metadata, "language", subtitle_language, 0);
-        av_freep(&subtitle_language);
-    }
-
-    subtitle_disable = 0;
-    av_freep(&subtitle_codec_name);
-    subtitle_stream_copy = 0;
-}
-
-static int opt_new_stream(const char *opt, const char *arg)
-{
-    AVFormatContext *oc;
-    int file_idx = nb_output_files - 1;
-    if (nb_output_files <= 0) {
-        fprintf(stderr, "At least one output file must be specified\n");
-        exit_program(1);
-    }
-    oc = output_files[file_idx];
-
-    if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
-    else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
-    else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
-    else if (!strcmp(opt, "newdata"    )) new_data_stream    (oc, file_idx);
-    else av_assert0(0);
-    return 0;
-}
-
-/* arg format is "output-stream-index:streamid-value". */
-static int opt_streamid(const char *opt, const char *arg)
-{
-    int idx;
-    char *p;
-    char idx_str[16];
-
-    av_strlcpy(idx_str, arg, sizeof(idx_str));
-    p = strchr(idx_str, ':');
-    if (!p) {
-        fprintf(stderr,
-                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
-                arg, opt);
-        exit_program(1);
-    }
-    *p++ = '\0';
-    idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
-    streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
-    streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
-    return 0;
-}
-
-static void opt_output_file(void *optctx, const char *filename)
-{
-    AVFormatContext *oc;
-    int err, use_video, use_audio, use_subtitle, use_data;
-    int input_has_video, input_has_audio, input_has_subtitle, input_has_data;
-    AVOutputFormat *file_oformat;
-
-    if (!strcmp(filename, "-"))
-        filename = "pipe:";
-
-    oc = avformat_alloc_context();
-    if (!oc) {
-        print_error(filename, AVERROR(ENOMEM));
-        exit_program(1);
-    }
-
-    if (last_asked_format) {
-        file_oformat = av_guess_format(last_asked_format, NULL, NULL);
-        if (!file_oformat) {
-            fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
-            exit_program(1);
-        }
-        last_asked_format = NULL;
-    } else {
-        file_oformat = av_guess_format(NULL, filename, NULL);
-        if (!file_oformat) {
-            fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
-                    filename);
-            exit_program(1);
-        }
-    }
-
-    oc->oformat = file_oformat;
-    av_strlcpy(oc->filename, filename, sizeof(oc->filename));
-
-    if (!strcmp(file_oformat->name, "ffm") &&
-        av_strstart(filename, "http:", NULL)) {
-        /* special case for files sent to avserver: we get the stream
-           parameters from avserver */
-        int err = read_avserver_streams(oc, filename);
-        if (err < 0) {
-            print_error(filename, err);
-            exit_program(1);
-        }
-    } else {
-        use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy || video_codec_name;
-        use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy || audio_codec_name;
-        use_subtitle = file_oformat->subtitle_codec != CODEC_ID_NONE || subtitle_stream_copy || subtitle_codec_name;
-        use_data = data_stream_copy ||  data_codec_name; /* XXX once generic data codec will be available add a ->data_codec reference and use it here */
-
-        /* disable if no corresponding type found */
-        check_inputs(&input_has_video,
-                     &input_has_audio,
-                     &input_has_subtitle,
-                     &input_has_data);
-
-        if (!input_has_video)
-            use_video = 0;
-        if (!input_has_audio)
-            use_audio = 0;
-        if (!input_has_subtitle)
-            use_subtitle = 0;
-        if (!input_has_data)
-            use_data = 0;
-
-        /* manual disable */
-        if (audio_disable)    use_audio    = 0;
-        if (video_disable)    use_video    = 0;
-        if (subtitle_disable) use_subtitle = 0;
-        if (data_disable)     use_data     = 0;
-
-        if (use_video)    new_video_stream(oc, nb_output_files);
-        if (use_audio)    new_audio_stream(oc, nb_output_files);
-        if (use_subtitle) new_subtitle_stream(oc, nb_output_files);
-        if (use_data)     new_data_stream(oc, nb_output_files);
-
-        av_dict_copy(&oc->metadata, metadata, 0);
-        av_dict_free(&metadata);
-    }
-
-    av_dict_copy(&output_opts[nb_output_files], format_opts, 0);
-    output_files[nb_output_files++] = oc;
-
-    /* check filename in case of an image number is expected */
-    if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
-        if (!av_filename_number_test(oc->filename)) {
-            print_error(oc->filename, AVERROR(EINVAL));
-            exit_program(1);
-        }
-    }
-
-    if (!(oc->oformat->flags & AVFMT_NOFILE)) {
-        /* test if it already exists to avoid losing precious files */
-        if (!file_overwrite &&
-            (strchr(filename, ':') == NULL ||
-             filename[1] == ':' ||
-             av_strstart(filename, "file:", NULL))) {
-            if (avio_check(filename, 0) == 0) {
-                if (!using_stdin) {
-                    fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
-                    fflush(stderr);
-                    if (!read_yesno()) {
-                        fprintf(stderr, "Not overwriting - exiting\n");
-                        exit_program(1);
-                    }
-                }
-                else {
-                    fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
-                    exit_program(1);
-                }
-            }
-        }
-
-        /* open the file */
-        if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
-            print_error(filename, err);
-            exit_program(1);
-        }
-    }
-
-    oc->preload= (int)(mux_preload*AV_TIME_BASE);
-    oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
-    if (loop_output >= 0) {
-        av_log(NULL, AV_LOG_WARNING, "-loop_output is deprecated, use -loop\n");
-        oc->loop_output = loop_output;
-    }
-    oc->flags |= AVFMT_FLAG_NONBLOCK;
-
-    frame_rate    = (AVRational){0, 0};
-    frame_width   = 0;
-    frame_height  = 0;
-    audio_sample_rate = 0;
-    audio_channels    = 0;
-    audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
-
-    av_freep(&forced_key_frames);
-    uninit_opts();
-    init_opts();
-}
-
-/* same option as mencoder */
-static int opt_pass(const char *opt, const char *arg)
-{
-    do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 2);
-    return 0;
-}
-
-static int64_t getutime(void)
-{
-#if HAVE_GETRUSAGE
-    struct rusage rusage;
-
-    getrusage(RUSAGE_SELF, &rusage);
-    return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
-#elif HAVE_GETPROCESSTIMES
-    HANDLE proc;
-    FILETIME c, e, k, u;
-    proc = GetCurrentProcess();
-    GetProcessTimes(proc, &c, &e, &k, &u);
-    return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
-#else
-    return av_gettime();
-#endif
-}
-
-static int64_t getmaxrss(void)
-{
-#if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
-    struct rusage rusage;
-    getrusage(RUSAGE_SELF, &rusage);
-    return (int64_t)rusage.ru_maxrss * 1024;
-#elif HAVE_GETPROCESSMEMORYINFO
-    HANDLE proc;
-    PROCESS_MEMORY_COUNTERS memcounters;
-    proc = GetCurrentProcess();
-    memcounters.cb = sizeof(memcounters);
-    GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
-    return memcounters.PeakPagefileUsage;
-#else
-    return 0;
-#endif
-}
-
-static void parse_matrix_coeffs(uint16_t *dest, const char *str)
-{
-    int i;
-    const char *p = str;
-    for(i = 0;; i++) {
-        dest[i] = atoi(p);
-        if(i == 63)
-            break;
-        p = strchr(p, ',');
-        if(!p) {
-            fprintf(stderr, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
-            exit_program(1);
-        }
-        p++;
-    }
-}
-
-static void opt_inter_matrix(const char *arg)
-{
-    inter_matrix = av_mallocz(sizeof(uint16_t) * 64);
-    parse_matrix_coeffs(inter_matrix, arg);
-}
-
-static void opt_intra_matrix(const char *arg)
-{
-    intra_matrix = av_mallocz(sizeof(uint16_t) * 64);
-    parse_matrix_coeffs(intra_matrix, arg);
-}
-
-static void show_usage(void)
-{
-    printf("Hyper fast Audio and Video encoder\n");
-    printf("usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...\n");
-    printf("\n");
-}
-
-static void show_help(void)
-{
-    AVCodec *c;
-    AVOutputFormat *oformat = NULL;
-    AVInputFormat  *iformat = NULL;
-    const AVClass *class;
-
-    av_log_set_callback(log_callback_help);
-    show_usage();
-    show_help_options(options, "Main options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB, 0);
-    show_help_options(options, "\nAdvanced options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB,
-                      OPT_EXPERT);
-    show_help_options(options, "\nVideo options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
-                      OPT_VIDEO);
-    show_help_options(options, "\nAdvanced Video options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
-                      OPT_VIDEO | OPT_EXPERT);
-    show_help_options(options, "\nAudio options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
-                      OPT_AUDIO);
-    show_help_options(options, "\nAdvanced Audio options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
-                      OPT_AUDIO | OPT_EXPERT);
-    show_help_options(options, "\nSubtitle options:\n",
-                      OPT_SUBTITLE | OPT_GRAB,
-                      OPT_SUBTITLE);
-    show_help_options(options, "\nAudio/Video grab options:\n",
-                      OPT_GRAB,
-                      OPT_GRAB);
-    printf("\n");
-    class = avcodec_get_class();
-    av_opt_show2(&class, NULL, AV_OPT_FLAG_ENCODING_PARAM|AV_OPT_FLAG_DECODING_PARAM, 0);
-    printf("\n");
-
-    /* individual codec options */
-    c = NULL;
-    while ((c = av_codec_next(c))) {
-        if (c->priv_class) {
-            av_opt_show2(&c->priv_class, NULL, AV_OPT_FLAG_ENCODING_PARAM|AV_OPT_FLAG_DECODING_PARAM, 0);
-            printf("\n");
-        }
-    }
-
-    class = avformat_get_class();
-    av_opt_show2(&class, NULL, AV_OPT_FLAG_ENCODING_PARAM|AV_OPT_FLAG_DECODING_PARAM, 0);
-    printf("\n");
-
-    /* individual muxer options */
-    while ((oformat = av_oformat_next(oformat))) {
-        if (oformat->priv_class) {
-            av_opt_show2(&oformat->priv_class, NULL, AV_OPT_FLAG_ENCODING_PARAM, 0);
-            printf("\n");
-        }
-    }
-
-    /* individual demuxer options */
-    while ((iformat = av_iformat_next(iformat))) {
-        if (iformat->priv_class) {
-            av_opt_show2(&iformat->priv_class, NULL, AV_OPT_FLAG_DECODING_PARAM, 0);
-            printf("\n");
-        }
-    }
-
-    class = sws_get_class();
-    av_opt_show2(&class, NULL, AV_OPT_FLAG_ENCODING_PARAM|AV_OPT_FLAG_DECODING_PARAM, 0);
-}
-
-static int opt_target(const char *opt, const char *arg)
-{
-    enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;
-    static const char *const frame_rates[] = {"25", "30000/1001", "24000/1001"};
-
-    if(!strncmp(arg, "pal-", 4)) {
-        norm = PAL;
-        arg += 4;
-    } else if(!strncmp(arg, "ntsc-", 5)) {
-        norm = NTSC;
-        arg += 5;
-    } else if(!strncmp(arg, "film-", 5)) {
-        norm = FILM;
-        arg += 5;
-    } else {
-        int fr;
-        /* Calculate FR via float to avoid int overflow */
-        fr = (int)(frame_rate.num * 1000.0 / frame_rate.den);
-        if(fr == 25000) {
-            norm = PAL;
-        } else if((fr == 29970) || (fr == 23976)) {
-            norm = NTSC;
-        } else {
-            /* Try to determine PAL/NTSC by peeking in the input files */
-            if(nb_input_files) {
-                int i, j;
-                for (j = 0; j < nb_input_files; j++) {
-                    for (i = 0; i < input_files[j].ctx->nb_streams; i++) {
-                        AVCodecContext *c = input_files[j].ctx->streams[i]->codec;
-                        if(c->codec_type != AVMEDIA_TYPE_VIDEO)
-                            continue;
-                        fr = c->time_base.den * 1000 / c->time_base.num;
-                        if(fr == 25000) {
-                            norm = PAL;
-                            break;
-                        } else if((fr == 29970) || (fr == 23976)) {
-                            norm = NTSC;
-                            break;
-                        }
-                    }
-                    if(norm != UNKNOWN)
-                        break;
-                }
-            }
-        }
-        if(verbose > 0 && norm != UNKNOWN)
-            fprintf(stderr, "Assuming %s for target.\n", norm == PAL ? "PAL" : "NTSC");
-    }
-
-    if(norm == UNKNOWN) {
-        fprintf(stderr, "Could not determine norm (PAL/NTSC/NTSC-Film) for target.\n");
-        fprintf(stderr, "Please prefix target with \"pal-\", \"ntsc-\" or \"film-\",\n");
-        fprintf(stderr, "or set a framerate with \"-r xxx\".\n");
-        exit_program(1);
-    }
-
-    if(!strcmp(arg, "vcd")) {
-        opt_video_codec("vcodec", "mpeg1video");
-        opt_audio_codec("vcodec", "mp2");
-        opt_format("f", "vcd");
-
-        opt_frame_size("s", norm == PAL ? "352x288" : "352x240");
-        opt_frame_rate("r", frame_rates[norm]);
-        opt_default("g", norm == PAL ? "15" : "18");
-
-        opt_default("b", "1150000");
-        opt_default("maxrate", "1150000");
-        opt_default("minrate", "1150000");
-        opt_default("bufsize", "327680"); // 40*1024*8;
-
-        opt_default("ab", "224000");
-        audio_sample_rate = 44100;
-        audio_channels = 2;
-
-        opt_default("packetsize", "2324");
-        opt_default("muxrate", "1411200"); // 2352 * 75 * 8;
-
-        /* We have to offset the PTS, so that it is consistent with the SCR.
-           SCR starts at 36000, but the first two packs contain only padding
-           and the first pack from the other stream, respectively, may also have
-           been written before.
-           So the real data starts at SCR 36000+3*1200. */
-        mux_preload= (36000+3*1200) / 90000.0; //0.44
-    } else if(!strcmp(arg, "svcd")) {
-
-        opt_video_codec("vcodec", "mpeg2video");
-        opt_audio_codec("acodec", "mp2");
-        opt_format("f", "svcd");
-
-        opt_frame_size("s", norm == PAL ? "480x576" : "480x480");
-        opt_frame_rate("r", frame_rates[norm]);
-        opt_default("g", norm == PAL ? "15" : "18");
-
-        opt_default("b", "2040000");
-        opt_default("maxrate", "2516000");
-        opt_default("minrate", "0"); //1145000;
-        opt_default("bufsize", "1835008"); //224*1024*8;
-        opt_default("flags", "+scan_offset");
-
-
-        opt_default("ab", "224000");
-        audio_sample_rate = 44100;
-
-        opt_default("packetsize", "2324");
-
-    } else if(!strcmp(arg, "dvd")) {
-
-        opt_video_codec("vcodec", "mpeg2video");
-        opt_audio_codec("vcodec", "ac3");
-        opt_format("f", "dvd");
-
-        opt_frame_size("vcodec", norm == PAL ? "720x576" : "720x480");
-        opt_frame_rate("r", frame_rates[norm]);
-        opt_default("g", norm == PAL ? "15" : "18");
-
-        opt_default("b", "6000000");
-        opt_default("maxrate", "9000000");
-        opt_default("minrate", "0"); //1500000;
-        opt_default("bufsize", "1835008"); //224*1024*8;
-
-        opt_default("packetsize", "2048");  // from www.mpucoder.com: DVD sectors contain 2048 bytes of data, this is also the size of one pack.
-        opt_default("muxrate", "10080000"); // from mplex project: data_rate = 1260000. mux_rate = data_rate * 8
-
-        opt_default("ab", "448000");
-        audio_sample_rate = 48000;
-
-    } else if(!strncmp(arg, "dv", 2)) {
-
-        opt_format("f", "dv");
-
-        opt_frame_size("s", norm == PAL ? "720x576" : "720x480");
-        opt_frame_pix_fmt("pix_fmt", !strncmp(arg, "dv50", 4) ? "yuv422p" :
-                          norm == PAL ? "yuv420p" : "yuv411p");
-        opt_frame_rate("r", frame_rates[norm]);
-
-        audio_sample_rate = 48000;
-        audio_channels = 2;
-
-    } else {
-        fprintf(stderr, "Unknown target: %s\n", arg);
-        return AVERROR(EINVAL);
-    }
-    return 0;
-}
-
-static int opt_vstats_file(const char *opt, const char *arg)
-{
-    av_free (vstats_filename);
-    vstats_filename=av_strdup (arg);
-    return 0;
-}
-
-static int opt_vstats(const char *opt, const char *arg)
-{
-    char filename[40];
-    time_t today2 = time(NULL);
-    struct tm *today = localtime(&today2);
-
-    snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
-             today->tm_sec);
-    return opt_vstats_file(opt, filename);
-}
-
-static int opt_bsf(const char *opt, const char *arg)
-{
-    AVBitStreamFilterContext *bsfc= av_bitstream_filter_init(arg); //FIXME split name and args for filter at '='
-    AVBitStreamFilterContext **bsfp;
-
-    if(!bsfc){
-        fprintf(stderr, "Unknown bitstream filter %s\n", arg);
-        exit_program(1);
-    }
-
-    bsfp= *opt == 'v' ? &video_bitstream_filters :
-          *opt == 'a' ? &audio_bitstream_filters :
-                        &subtitle_bitstream_filters;
-    while(*bsfp)
-        bsfp= &(*bsfp)->next;
-
-    *bsfp= bsfc;
-
-    return 0;
-}
-
-static int opt_preset(const char *opt, const char *arg)
-{
-    FILE *f=NULL;
-    char filename[1000], tmp[1000], tmp2[1000], line[1000];
-    char *codec_name = *opt == 'v' ? video_codec_name :
-                       *opt == 'a' ? audio_codec_name :
-                                     subtitle_codec_name;
-
-    if (!(f = get_preset_file(filename, sizeof(filename), arg, *opt == 'f', codec_name))) {
-        fprintf(stderr, "File for preset '%s' not found\n", arg);
-        exit_program(1);
-    }
-
-    while(!feof(f)){
-        int e= fscanf(f, "%999[^\n]\n", line) - 1;
-        if(line[0] == '#' && !e)
-            continue;
-        e|= sscanf(line, "%999[^=]=%999[^\n]\n", tmp, tmp2) - 2;
-        if(e){
-            fprintf(stderr, "%s: Invalid syntax: '%s'\n", filename, line);
-            exit_program(1);
-        }
-        if(!strcmp(tmp, "acodec")){
-            opt_audio_codec(tmp, tmp2);
-        }else if(!strcmp(tmp, "vcodec")){
-            opt_video_codec(tmp, tmp2);
-        }else if(!strcmp(tmp, "scodec")){
-            opt_subtitle_codec(tmp, tmp2);
-        }else if(!strcmp(tmp, "dcodec")){
-            opt_data_codec(tmp, tmp2);
-        }else if(opt_default(tmp, tmp2) < 0){
-            fprintf(stderr, "%s: Invalid option or argument: '%s', parsed as '%s' = '%s'\n", filename, line, tmp, tmp2);
-            exit_program(1);
-        }
-    }
-
-    fclose(f);
-
-    return 0;
-}
-
-static const OptionDef options[] = {
-    /* main options */
-#include "cmdutils_common_opts.h"
-    { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
-    { "i", HAS_ARG, {(void*)opt_input_file}, "input file name", "filename" },
-    { "y", OPT_BOOL, {(void*)&file_overwrite}, "overwrite output files" },
-    { "map", HAS_ARG | OPT_EXPERT, {(void*)opt_map}, "set input stream mapping", "file.stream[:syncfile.syncstream]" },
-    { "map_meta_data", HAS_ARG | OPT_EXPERT, {(void*)opt_map_meta_data}, "DEPRECATED set meta data information of outfile from infile",
-      "outfile[,metadata]:infile[,metadata]" },
-    { "map_metadata", HAS_ARG | OPT_EXPERT, {(void*)opt_map_metadata}, "set metadata information of outfile from infile",
-      "outfile[,metadata]:infile[,metadata]" },
-    { "map_chapters",  HAS_ARG | OPT_EXPERT, {(void*)opt_map_chapters},  "set chapters mapping", "outfile:infile" },
-    { "t", HAS_ARG, {(void*)opt_recording_time}, "record or transcode \"duration\" seconds of audio/video", "duration" },
-    { "fs", HAS_ARG | OPT_INT64, {(void*)&limit_filesize}, "set the limit file size in bytes", "limit_size" }, //
-    { "ss", HAS_ARG, {(void*)opt_start_time}, "set the start time offset", "time_off" },
-    { "itsoffset", HAS_ARG, {(void*)opt_input_ts_offset}, "set the input ts offset", "time_off" },
-    { "itsscale", HAS_ARG, {(void*)opt_input_ts_scale}, "set the input ts scale", "stream:scale" },
-    { "timestamp", HAS_ARG, {(void*)opt_recording_timestamp}, "set the recording timestamp ('now' to set the current time)", "time" },
-    { "metadata", HAS_ARG, {(void*)opt_metadata}, "add metadata", "string=string" },
-    { "dframes", OPT_INT | HAS_ARG, {(void*)&max_frames[AVMEDIA_TYPE_DATA]}, "set the number of data frames to record", "number" },
-    { "benchmark", OPT_BOOL | OPT_EXPERT, {(void*)&do_benchmark},
-      "add timings for benchmarking" },
-    { "timelimit", HAS_ARG, {(void*)opt_timelimit}, "set max runtime in seconds", "limit" },
-    { "dump", OPT_BOOL | OPT_EXPERT, {(void*)&do_pkt_dump},
-      "dump each input packet" },
-    { "hex", OPT_BOOL | OPT_EXPERT, {(void*)&do_hex_dump},
-      "when dumping packets, also dump the payload" },
-    { "re", OPT_BOOL | OPT_EXPERT, {(void*)&rate_emu}, "read input at native frame rate", "" },
-    { "loop_input", OPT_BOOL | OPT_EXPERT, {(void*)&loop_input}, "deprecated, use -loop" },
-    { "loop_output", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&loop_output}, "deprecated, use -loop", "" },
-    { "v", HAS_ARG, {(void*)opt_verbose}, "set ffmpeg verbosity level", "number" },
-    { "target", HAS_ARG, {(void*)opt_target}, "specify target file type (\"vcd\", \"svcd\", \"dvd\", \"dv\", \"dv50\", \"pal-vcd\", \"ntsc-svcd\", ...)", "type" },
-    { "threads",  HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
-    { "vsync", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&video_sync_method}, "video sync method", "" },
-    { "async", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&audio_sync_method}, "audio sync method", "" },
-    { "adrift_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&audio_drift_threshold}, "audio drift threshold", "threshold" },
-    { "copyts", OPT_BOOL | OPT_EXPERT, {(void*)&copy_ts}, "copy timestamps" },
-    { "copytb", OPT_BOOL | OPT_EXPERT, {(void*)&copy_tb}, "copy input stream time base when stream copying" },
-    { "shortest", OPT_BOOL | OPT_EXPERT, {(void*)&opt_shortest}, "finish encoding within shortest input" }, //
-    { "dts_delta_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&dts_delta_threshold}, "timestamp discontinuity delta threshold", "threshold" },
-    { "programid", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&opt_programid}, "desired program number", "" },
-    { "xerror", OPT_BOOL, {(void*)&exit_on_error}, "exit on error", "error" },
-    { "copyinkf", OPT_BOOL | OPT_EXPERT, {(void*)&copy_initial_nonkeyframes}, "copy initial non-keyframes" },
-
-    /* video options */
-    { "vframes", OPT_INT | HAS_ARG | OPT_VIDEO, {(void*)&max_frames[AVMEDIA_TYPE_VIDEO]}, "set the number of video frames to record", "number" },
-    { "r", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_rate}, "set frame rate (Hz value, fraction or abbreviation)", "rate" },
-    { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
-    { "aspect", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_aspect_ratio}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
-    { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format, 'list' as argument shows all the pixel formats supported", "format" },
-    { "croptop", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
-    { "cropbottom", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
-    { "cropleft", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
-    { "cropright", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
-    { "padtop", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "size" },
-    { "padbottom", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "size" },
-    { "padleft", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "size" },
-    { "padright", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "size" },
-    { "padcolor", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "color" },
-    { "intra", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&intra_only}, "use only intra frames"},
-    { "vn", OPT_BOOL | OPT_VIDEO, {(void*)&video_disable}, "disable video" },
-    { "vdt", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&video_discard}, "discard threshold", "n" },
-    { "qscale", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qscale}, "use fixed video quantizer scale (VBR)", "q" },
-    { "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_override_string}, "rate control override for specific intervals", "override" },
-    { "vcodec", HAS_ARG | OPT_VIDEO, {(void*)opt_video_codec}, "force video codec ('copy' to copy stream)", "codec" },
-    { "me_threshold", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_me_threshold}, "motion estimaton threshold",  "threshold" },
-    { "sameq", OPT_BOOL | OPT_VIDEO, {(void*)&same_quality},
-      "use same quantizer as source (implies VBR)" },
-    { "pass", HAS_ARG | OPT_VIDEO, {(void*)opt_pass}, "select the pass number (1 or 2)", "n" },
-    { "passlogfile", HAS_ARG | OPT_STRING | OPT_VIDEO, {(void*)&pass_logfilename_prefix}, "select two pass log file name prefix", "prefix" },
-    { "deinterlace", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_deinterlace},
-      "deinterlace pictures" },
-    { "psnr", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_psnr}, "calculate PSNR of compressed frames" },
-    { "vstats", OPT_EXPERT | OPT_VIDEO, {(void*)&opt_vstats}, "dump video coding statistics to file" },
-    { "vstats_file", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_vstats_file}, "dump video coding statistics to file", "file" },
-#if CONFIG_AVFILTER
-    { "vf", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
-#endif
-    { "intra_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_intra_matrix}, "specify intra matrix coeffs", "matrix" },
-    { "inter_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_inter_matrix}, "specify inter matrix coeffs", "matrix" },
-    { "top", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_top_field_first}, "top=1/bottom=0/auto=-1 field first", "" },
-    { "dc", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&intra_dc_precision}, "intra_dc_precision", "precision" },
-    { "vtag", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_codec_tag}, "force video tag/fourcc", "fourcc/tag" },
-    { "newvideo", OPT_VIDEO, {(void*)opt_new_stream}, "add a new video stream to the current output stream" },
-    { "vlang", HAS_ARG | OPT_STRING | OPT_VIDEO, {(void *)&video_language}, "set the ISO 639 language code (3 letters) of the current video stream" , "code" },
-    { "qphist", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, { (void *)&qp_hist }, "show QP histogram" },
-    { "force_fps", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&force_fps}, "force the selected framerate, disable the best supported framerate selection" },
-    { "streamid", HAS_ARG | OPT_EXPERT, {(void*)opt_streamid}, "set the value of an outfile streamid", "streamIndex:value" },
-    { "force_key_frames", OPT_STRING | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void *)&forced_key_frames}, "force key frames at specified timestamps", "timestamps" },
-
-    /* audio options */
-    { "aframes", OPT_INT | HAS_ARG | OPT_AUDIO, {(void*)&max_frames[AVMEDIA_TYPE_AUDIO]}, "set the number of audio frames to record", "number" },
-    { "aq", OPT_FLOAT | HAS_ARG | OPT_AUDIO, {(void*)&audio_qscale}, "set audio quality (codec-specific)", "quality", },
-    { "ar", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_rate}, "set audio sampling rate (in Hz)", "rate" },
-    { "ac", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_channels}, "set number of audio channels", "channels" },
-    { "an", OPT_BOOL | OPT_AUDIO, {(void*)&audio_disable}, "disable audio" },
-    { "acodec", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_codec}, "force audio codec ('copy' to copy stream)", "codec" },
-    { "atag", HAS_ARG | OPT_EXPERT | OPT_AUDIO, {(void*)opt_codec_tag}, "force audio tag/fourcc", "fourcc/tag" },
-    { "vol", OPT_INT | HAS_ARG | OPT_AUDIO, {(void*)&audio_volume}, "change audio volume (256=normal)" , "volume" }, //
-    { "newaudio", OPT_AUDIO, {(void*)opt_new_stream}, "add a new audio stream to the current output stream" },
-    { "alang", HAS_ARG | OPT_STRING | OPT_AUDIO, {(void *)&audio_language}, "set the ISO 639 language code (3 letters) of the current audio stream" , "code" },
-    { "sample_fmt", HAS_ARG | OPT_EXPERT | OPT_AUDIO, {(void*)opt_audio_sample_fmt}, "set sample format, 'list' as argument shows all the sample formats supported", "format" },
-
-    /* subtitle options */
-    { "sn", OPT_BOOL | OPT_SUBTITLE, {(void*)&subtitle_disable}, "disable subtitle" },
-    { "scodec", HAS_ARG | OPT_SUBTITLE, {(void*)opt_subtitle_codec}, "force subtitle codec ('copy' to copy stream)", "codec" },
-    { "newsubtitle", OPT_SUBTITLE, {(void*)opt_new_stream}, "add a new subtitle stream to the current output stream" },
-    { "slang", HAS_ARG | OPT_STRING | OPT_SUBTITLE, {(void *)&subtitle_language}, "set the ISO 639 language code (3 letters) of the current subtitle stream" , "code" },
-    { "stag", HAS_ARG | OPT_EXPERT | OPT_SUBTITLE, {(void*)opt_codec_tag}, "force subtitle tag/fourcc", "fourcc/tag" },
-
-    /* grab options */
-    { "vc", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_channel}, "deprecated, use -channel", "channel" },
-    { "tvstd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_standard}, "deprecated, use -standard", "standard" },
-    { "isync", OPT_BOOL | OPT_EXPERT | OPT_GRAB, {(void*)&input_sync}, "sync read on input", "" },
-
-    /* muxer options */
-    { "muxdelay", OPT_FLOAT | HAS_ARG | OPT_EXPERT, {(void*)&mux_max_delay}, "set the maximum demux-decode delay", "seconds" },
-    { "muxpreload", OPT_FLOAT | HAS_ARG | OPT_EXPERT, {(void*)&mux_preload}, "set the initial demux-decode delay", "seconds" },
-
-    { "absf", HAS_ARG | OPT_AUDIO | OPT_EXPERT, {(void*)opt_bsf}, "", "bitstream_filter" },
-    { "vbsf", HAS_ARG | OPT_VIDEO | OPT_EXPERT, {(void*)opt_bsf}, "", "bitstream_filter" },
-    { "sbsf", HAS_ARG | OPT_SUBTITLE | OPT_EXPERT, {(void*)opt_bsf}, "", "bitstream_filter" },
-
-    { "apre", HAS_ARG | OPT_AUDIO | OPT_EXPERT, {(void*)opt_preset}, "set the audio options to the indicated preset", "preset" },
-    { "vpre", HAS_ARG | OPT_VIDEO | OPT_EXPERT, {(void*)opt_preset}, "set the video options to the indicated preset", "preset" },
-    { "spre", HAS_ARG | OPT_SUBTITLE | OPT_EXPERT, {(void*)opt_preset}, "set the subtitle options to the indicated preset", "preset" },
-    { "fpre", HAS_ARG | OPT_EXPERT, {(void*)opt_preset}, "set options from indicated preset file", "filename" },
-    /* data codec support */
-    { "dcodec", HAS_ARG | OPT_DATA, {(void*)opt_data_codec}, "force data codec ('copy' to copy stream)", "codec" },
-
-    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
-    { NULL, },
-};
-
-int main(int argc, char **argv)
-{
-    int64_t ti;
-
-    av_log_set_flags(AV_LOG_SKIP_REPEATED);
-    parse_loglevel(argc, argv, options);
-
-    avcodec_register_all();
-#if CONFIG_AVDEVICE
-    avdevice_register_all();
-#endif
-#if CONFIG_AVFILTER
-    avfilter_register_all();
-#endif
-    av_register_all();
-    avformat_network_init();
-
-    avio_set_interrupt_cb(decode_interrupt_cb);
-
-    init_opts();
-
-    show_banner();
-
-    av_log(NULL, AV_LOG_WARNING, "This program is not developed anymore and is only "
-                                 "provided for compatibility. Use avconv instead "
-                                 "(see Changelog for the list of incompatible changes).\n");
-
-    /* parse options */
-    parse_options(NULL, argc, argv, options, opt_output_file);
-
-    if(nb_output_files <= 0 && nb_input_files == 0) {
-        show_usage();
-        fprintf(stderr, "Use -h to get full help or, even better, run 'man ffmpeg'\n");
-        exit_program(1);
-    }
-
-    /* file converter / grab */
-    if (nb_output_files <= 0) {
-        fprintf(stderr, "At least one output file must be specified\n");
-        exit_program(1);
-    }
-
-    if (nb_input_files == 0) {
-        fprintf(stderr, "At least one input file must be specified\n");
-        exit_program(1);
-    }
-
-    ti = getutime();
-    if (transcode(output_files, nb_output_files, input_files, nb_input_files,
-                  stream_maps, nb_stream_maps) < 0)
-        exit_program(1);
-    ti = getutime() - ti;
-    if (do_benchmark) {
-        int maxrss = getmaxrss() / 1024;
-        printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
-    }
-
-    exit_program(0);
-    return 0;
-}



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