[libav-bugs] [Bug 325] New: problems with using -ss option when transcoding from *.vob to *.avi

bugzilla-daemon at aruru.libav.org bugzilla-daemon at aruru.libav.org
Mon Jul 2 00:30:11 CEST 2012


https://bugzilla.libav.org/show_bug.cgi?id=325

           Summary: problems with using -ss option when transcoding from
                    *.vob to *.avi
           Product: Libav
           Version: 0.8
          Platform: X86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: utilities
        AssignedTo: bugzilla at libav.org
        ReportedBy: superandrzej at epf.pl


I am trying to transcode from *.vob to *.avi.
As long as I don't use -ss option everything works as expected.
With -ss option avconv exits with following error:

 avconv -ss 0:17:47 -t 01:28:48.4 -i '/A/film.vob' -ac 2 '/A/film.avi'
avconv version 0.8.3, Copyright (c) 2000-2012 the Libav developers
  built on Jun 26 2012 22:35:07 with gcc 4.6.2
[mpeg @ 0x90f7a80] max_analyze_duration reached
Input #0, mpeg, from '/A/film.vob':
  Duration: 00:00:21.02, start: 0.287267, bitrate: -2147483 kb/s
    Stream #0.0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [PAR 64:45
DAR 16:9], 9800 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0.1[0x20]: Subtitle: dvdsub
    Stream #0.2[0x21]: Subtitle: dvdsub
    Stream #0.3[0x22]: Subtitle: dvdsub
    Stream #0.4[0x23]: Subtitle: dvdsub
    Stream #0.5[0x24]: Subtitle: dvdsub
    Stream #0.6[0x25]: Subtitle: dvdsub
    Stream #0.7[0x26]: Subtitle: dvdsub
    Stream #0.8[0x27]: Subtitle: dvdsub
    Stream #0.9[0x80]: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s
    Stream #0.10[0x81]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
    Stream #0.11[0x82]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
    Stream #0.12[0x83]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
    Stream #0.13[0x84]: Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s
    Stream #0.14[0x28]: Subtitle: dvdsub
    Stream #0.15[0x29]: Subtitle: dvdsub
    Stream #0.16[0x2a]: Subtitle: dvdsub
File '/A/film.avi' already exists. Overwrite ? [y/N] y
[buffer @ 0x90fae00] w:720 h:576 pixfmt:yuv420p
Output #0, avi, to '/A/film.avi':
  Metadata:
    ISFT            : Lavf53.21.0
    Stream #0.0: Video: mpeg4, yuv420p, 720x576 [PAR 64:45 DAR 16:9], q=2-31,
200 kb/s, 25 tbn, 25 tbc
    Stream #0.1: Audio: libmp3lame, 48000 Hz, 2 channels, s16, 200 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video -> mpeg4)
  Stream #0:9 -> #0:1 (ac3 -> libmp3lame)
Press ctrl-c to stop encoding
[ac3 @ 0x9117f20] frame sync error
Error while decoding stream #0:9
Input stream #0:9 frame changed from rate:48000 fmt:s16 ch:6 to rate:48000
fmt:s16 ch:2
frame=    0 fps=  0 q=0.0 Lsize=      36kB time=1.06 bitrate= 275.7kbits/s
dup=0 drop=7
video:0kB audio:25kB global headers:0kB muxing overhead 43.600063%


The information about input file:
 avconv -v 9 -loglevel 99 -i '/A/film.vob'
avconv version 0.8.3, Copyright (c) 2000-2012 the Libav developers
  built on Jun 26 2012 22:35:07 with gcc 4.6.2
  configuration: --cpu=i686 --prefix=/usr --disable-static --enable-shared
--enable-gpl --enable-version3 --disable-avserver --enable-x11grab
--disable-netw-amrnb --enable-libopencore-amrwb --enable-libmp3lame
--enable-libtheora
  libavutil    51. 22. 1 / 51. 22. 1
  libavcodec   53. 35. 0 / 53. 35. 0
  libavformat  53. 21. 0 / 53. 21. 0
  libavdevice  53.  2. 0 / 53.  2. 0
  libavfilter   2. 15. 0 /  2. 15. 0
  libswscale    2.  1. 0 /  2.  1. 0
[mpeg @ 0x8976a80] Probed with size=8192 and score=52
[mpeg @ 0x8976a80] probing stream 0
    Last message repeated 4 times
[mpeg @ 0x8976a80] Probe with size=10112, packets=5 detected mpegvideo with
score=51
[mpeg @ 0x8976a80] probed stream 0
[dvdsub @ 0x897b700] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x897b700] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x897d900] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x897d900] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x897e420] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x897e420] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x8989ea0] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x8989ea0] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x898c000] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x898c000] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x898e160] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x898e160] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x8990360] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x8990360] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x8992560] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x8992560] err{or,}_recognition combined: 1; 1
[mpeg2video @ 0x89789e0] err{or,}_recognition separate: 1; 1
[mpeg2video @ 0x89789e0] err{or,}_recognition combined: 1; 1
[mpeg2video @ 0x89789e0] Unsupported bit depth: 0
[ac3 @ 0x8996f20] err{or,}_recognition separate: 1; 1
[ac3 @ 0x8996f20] err{or,}_recognition combined: 1; 1
[ac3 @ 0x8996f20] Unsupported bit depth: 0
[ac3 @ 0x8a132c0] err{or,}_recognition separate: 1; 1
[ac3 @ 0x8a132c0] err{or,}_recognition combined: 1; 1
[ac3 @ 0x8a132c0] Unsupported bit depth: 0
[ac3 @ 0x8a34280] err{or,}_recognition separate: 1; 1
[ac3 @ 0x8a34280] err{or,}_recognition combined: 1; 1
[ac3 @ 0x8a34280] Unsupported bit depth: 0
[ac3 @ 0x8a55240] err{or,}_recognition separate: 1; 1
[ac3 @ 0x8a55240] err{or,}_recognition combined: 1; 1
[ac3 @ 0x8a55240] Unsupported bit depth: 0
[ac3 @ 0x8a76200] err{or,}_recognition separate: 1; 1
[ac3 @ 0x8a76200] err{or,}_recognition combined: 1; 1
[ac3 @ 0x8a76200] Unsupported bit depth: 0
[dvdsub @ 0x8b1fd40] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x8b1fd40] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x8b3f800] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x8b3f800] err{or,}_recognition combined: 1; 1
[dvdsub @ 0x8b3fc00] err{or,}_recognition separate: 1; 1
[dvdsub @ 0x8b3fc00] err{or,}_recognition combined: 1; 1
[mpeg @ 0x8976a80] max_analyze_duration reached
Input #0, mpeg, from '/A/film.vob':
  Duration: 00:00:21.02, start: 0.287267, bitrate: -2147483 kb/s
    Stream #0.0[0x1e0], 127, 1/90000: Video: mpeg2video (Main), yuv420p,
720x576 [PAR 64:45 DAR 16:9], 1/50, 9800 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0.1[0x20], 1, 1/90000: Subtitle: dvdsub
    Stream #0.2[0x21], 1, 1/90000: Subtitle: dvdsub
    Stream #0.3[0x22], 1, 1/90000: Subtitle: dvdsub
    Stream #0.4[0x23], 1, 1/90000: Subtitle: dvdsub
    Stream #0.5[0x24], 1, 1/90000: Subtitle: dvdsub
    Stream #0.6[0x25], 1, 1/90000: Subtitle: dvdsub
    Stream #0.7[0x26], 1, 1/90000: Subtitle: dvdsub
    Stream #0.8[0x27], 1, 1/90000: Subtitle: dvdsub
    Stream #0.9[0x80], 149, 1/90000: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s
    Stream #0.10[0x81], 149, 1/90000: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
    Stream #0.11[0x82], 149, 1/90000: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
    Stream #0.12[0x83], 149, 1/90000: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
    Stream #0.13[0x84], 152, 1/90000: Audio: ac3, 48000 Hz, stereo, s16, 192
kb/s
    Stream #0.14[0x28], 1, 1/90000: Subtitle: dvdsub
    Stream #0.15[0x29], 1, 1/90000: Subtitle: dvdsub
    Stream #0.16[0x2a], 1, 1/90000: Subtitle: dvdsub
At least one output file must be specified


best regards

Andrzej

P.S.
I've already reported this issue almost 2 years ago.
It disappeared from bug reports in ffmpeg but I google it out:
http://roundup.libav.org/issue2199

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