[libav-bugs] [Bug 373] New: y4m as input results in "filename.y4m: Operation not permitted"

bugzilla-daemon at aruru.libav.org bugzilla-daemon at aruru.libav.org
Mon Sep 24 15:49:26 CEST 2012


https://bugzilla.libav.org/show_bug.cgi?id=373

           Summary: y4m as input results in "filename.y4m: Operation not
                    permitted"
           Product: Libav
           Version: git HEAD
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: utilities
        AssignedTo: bugzilla at libav.org
        ReportedBy: john.vansickle at gmail.com


To reproduce create a small sample:

avconv -f rawvideo -s 640x480 -r 25 -pix_fmt yuv420p -i /dev/zero -frames:v 75
-f yuv4mpegpipe ->video.y4m

Then use video.y4m as input and you'll notice "video.y4m: Operation not
permitted" in the console output. The exit status is zero.

 avconv -v debug -i video.y4m output.avi
avconv version v0.8-3173-gcee1950, Copyright (c) 2000-2012 the Libav developers
  built on Sep 24 2012 09:13:48 with gcc 4.7 (Debian 4.7.2-2)
  configuration:
--extra-cflags=-I/home/john/.custom.software/builds/libav-2012.09.24-08.58/include
--extra-ldflags=-L/home/john/.custom.software/builds/libav-2012.09.24-08.58/lib
--prefix=/home/john/.custom.software/builds/libav-2012.09.24-08.58 --enable-gpl
--enable-version3 --enable-nonfree --enable-x11grab --enable-libmp3lame
--enable-libx264 --enable-libfdk-aac --enable-libvorbis --enable-libvpx
--enable-libfreetype --enable-libtheora --enable-libspeex --enable-debug
  libavutil     51. 41. 0 / 51. 41. 0
  libavcodec    54. 27. 0 / 54. 27. 0
  libavformat   54. 17. 0 / 54. 17. 0
  libavdevice   53.  2. 0 / 53.  2. 0
  libavfilter    3.  1. 0 /  3.  1. 0
  libavresample  0.  0. 3 /  0.  0. 3
  libswscale     2.  1. 1 /  2.  1. 1
[yuv4mpegpipe @ 0x2c49760] Probed with size=2048 and score=100
[yuv4mpegpipe @ 0x2c49760] Probe buffer size limit 5000000 reached
[yuv4mpegpipe @ 0x2c49760] Estimating duration from bitrate, this may be
inaccurate
Input #0, yuv4mpegpipe, from 'video.y4m':
  Duration: N/A, bitrate: N/A
    Stream #0.0, 11, 1/25: Video: rawvideo, yuv420p, 640x480, 0/1, 25 fps, 25
tbr, 25 tbn
[buffer @ 0x2c4b3c0] w:640 h:480 pixfmt:yuv420p
[buffersink @ 0x2c4ae40] auto-inserting filter 'auto-inserted fifo 0' between
the filter 'format' and the filter 'output stream 0:0'
[mpeg4 @ 0x2c4a500] detected 2 logical cores
Output #0, avi, to 'output.avi':
  Metadata:
    ISFT            : Lavf54.17.0
    Stream #0.0, 0, 1/25: Video: mpeg4, yuv420p, 640x480, 1/25, q=2-31, 200
kb/s, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
Press ctrl-c to stop encoding
video.y4m: Operation not permitted
No more output streams to write to, finishing.
frame=   75 fps=  0 q=2.0 Lsize=      42kB time=3.00 bitrate= 113.6kbits/s
video:34kB audio:0kB global headers:0kB muxing overhead 21.531701%

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