[FFmpeg-trac] #544(avformat:new): Matroska demuxer unable to play valid file

[FFmpeg]

#544: Matroska demuxer unable to play valid file
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             Reporter:  brad      |                     Type:  defect
               Status:  new       |                 Priority:  important
            Component:  avformat  |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 Trying out the Matroska testsuite with FFmpeg I see the FFmpeg Matroska
 demuxer is unable to play one of the test videos although it plays fine
 with VLC 1.0.6.


 $ /home/brad/ffmpeg/ffplay invalid_EBML_number_size_tag.mkv
 ^[[0;39mffplay version N-33517-gbe5ac96, Copyright (c) 2003-2011 the
 FFmpeg developers
 ^[[0m^[[0;39m  built on Oct 11 2011 20:25:06 with gcc 4.2.1 20070719
 ^[[0m^[[0;39m  configuration: --disable-debug --disable-indev=jack
 --disable-indev=oss --disable-outdev=oss --disable-outdev=sdl --enable-gpl
 --enable-libgsm --enable-libmp3lame --enable-libschroedinger --enable-
 libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-
 libx264 --enable-runtime-cpudetect --enable-x11grab --extra-
 cflags='-I/usr/local/include -I/usr/X11R6/include' --extra-
 libs='-L/usr/local/lib -L/usr/X11R6/lib' --optflags='-O2 -pipe -Wno-
 redundant-decls'
 ^[[0m^[[0;39m  libavutil    51. 20. 1 / 51. 20. 1
 ^[[0m^[[0;39m  libavcodec   53. 20. 1 / 53. 20. 1
 ^[[0m^[[0;39m  libavformat  53. 15. 0 / 53. 15. 0
 ^[[0m^[[0;39m  libavdevice  53.  4. 0 / 53.  4. 0
 ^[[0m^[[0;39m  libavfilter   2. 43. 6 /  2. 43. 6
 ^[[0m^[[0;39m  libswscale    2.  1. 0 /  2.  1. 0
 ^[[0m^[[0;39m  libpostproc  51.  2. 0 / 51.  2. 0
 ^[[0m^[[1;31m[matroska,webm @ 0x2093ab800] Invalid EBML number size tag
 0x0a at pos 35 (0x23)
 ^[[0m^[[1;31mtest4.mkv: Invalid data found when processing input

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/544>
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