Dennis Meuwissen <[EMAIL PROTECTED]> added the comment:

I'm hoping with a more minimal test case there might be more interest in this 
bug.

Using the sample file:
Matrix.Reloaded.Trailer-640x346-XviD-1.0beta2-HE_AAC_subtitled.mkv

on this page:
http://www.matroska.org/samples/matrix/index.html

and the following command line:
ffmpeg -i Matrix.Reloaded.Trailer-640x346-XviD-1.0beta2-HE_AAC_subtitled.mkv
-vcodec mpeg2video -an out.mpg

produces:
FFmpeg version SVN-r14645, Copyright (c) 2000-2008 Fabrice Bellard, et al.
  configuration: --disable-ffplay --disable-ffserver --disable-encoders
--enable-memalign-hack --enable-gpl --enable-w32threads --enable-swscale
--enable-encoder=mjpeg --enable-encoder=mpeg2video --enable-encoder=ac3
--enable-demuxers --enable-muxers
  libavutil version: 49.7.0
  libavcodec version: 51.63.0
  libavformat version: 52.18.0
  libavdevice version: 52.0.0
  built on Aug  6 2008 18:08:37, gcc: 4.3.0 20080305 (alpha-testing) 
mingw-20080502
[matroska @ 003EAA60]Unknown entry 0x467E
Input #0, matroska, from 'test.mkv':
  Duration: 00:02:31.45, start: 0.000000, bitrate: N/A
    Stream #0.0(eng): Video: mpeg4, yuv420p, 640x346 [PAR 1:1 DAR 320:173],
24.005 tb(r)
    Stream #0.1(eng): Audio: 0x0000, 44100 Hz, stereo, s16
    Stream #0.2(ara): Subtitle: 0x0000
    Stream #0.3(cat): Subtitle: 0x0000
    Stream #0.4(dut): Subtitle: 0x0000
    Stream #0.5(eng): Subtitle: 0x0000
    Stream #0.6(fin): Subtitle: 0x0000
    Stream #0.7(fre): Subtitle: 0x0000
    Stream #0.8(ger): Subtitle: 0x0000
    Stream #0.9(jpn): Subtitle: 0x0000
    Stream #0.10(por): Subtitle: 0x0000
    Stream #0.11(slv): Subtitle: 0x0000
    Stream #0.12(spa): Subtitle: 0x0000
    Stream #0.13: Attachment: mjpeg
File 'out.mpg' already exists. Overwrite ? [y/N] Output #0, mpeg, to 'out.mpg':
    Stream #0.0(eng): Video: mpeg2video, yuv420p, 640x346 [PAR 1:1 DAR 320:173],
q=2-31, 200 kb/s, 24.000 tb(c)
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop encoding
frame=  132 fps=  0 q=6.9 size=     462kB time=5.46 bitrate= 693.4kbits/s    
frame=  319 fps=314 q=6.1 size=     642kB time=13.25 bitrate= 396.9kbits/s    
frame=  434 fps=286 q=18.6 size=     804kB time=18.04 bitrate= 365.1kbits/s    

[snip]

frame= 5830 fps=198 q=31.0 size=    9852kB time=242.88 bitrate= 332.3kbits/s    
frame= 6015 fps=200 q=31.0 size=    9974kB time=250.58 bitrate= 326.1kbits/s    
[matroska @ 003EAA60]Unknown entry 0x1C53BB6B
[matroska @ 003EAA60]Unknown entry 0x114D9B74
frame= 6033 fps=201 q=31.0 Lsize=    9986kB time=251.33 bitrate= 325.5kbits/s   
 

video:9892kB audio:0kB global headers:0kB muxing overhead 0.954279%


The output file is much longer in duration than the original, and seems to have
a lot of duplicated frames.

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FFmpeg issue tracker <[EMAIL PROTECTED]>
<https://roundup.mplayerhq.hu/roundup/ffmpeg/issue388>
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