New issue 110 by gasz.zol...@gmail.com: vcodec copy 25 -> 50 fps mpe2video
http://code.google.com/p/ffmbc/issues/detail?id=110

Trying to rewrap mpeg2 gxf to mxf with vcodec copy
Example: ffmbc.exe -i test.gxf -vcodec copy -acodec pcm_s16le -y test.mxf

The input video is 25fps, the output becomes 50fps, audio frame rate  
remains 25.

Tried both FFmbc-0.7rc7-win64-120705 and FFmbc-0.7rc7-win32-120705
on Windows Server 2008 R2

Output:
(main part is: Stream #0.0(und): Video: mpeg2video, yuv420p, 720x576i tff  
[PAR 16:15 DAR 4:3], stream copy, 50.00 fps)

ffmbc.exe -i test.gxf -vcodec copy -acodec pcm_s16le -y test.mxf
FFmbc version 0.7-rc7
Copyright (c) 2008-2012 Baptiste Coudurier and the FFmpeg developers
Input #0, gxf, from 'test.gxf':
   Duration: 00:00:32.00, start: 0.000000, bitrate: 16182 kb/s
     Stream #0.0(und): Video: mpeg2video (Main), yuv420p, 720x576i tff [PAR  
16:15 DAR 4:3], 10000 kb/s, 25.00 fps
     Stream #0.1(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.2(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.3(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.4(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.5(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.6(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.7(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.8(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
     Stream #0.9(und): Data: unknown (0x0000)
[pcm_s16le @ 000000000032FAA0] The requested thread algorithm is not  
supported with this thread library.
Output #0, mxf, to 'test.mxf':
   Metadata:
     encoder: FFmbc 0.7
     Stream #0.0(und): Video: mpeg2video, yuv420p, 720x576i tff [PAR 16:15  
DAR 4:3], stream copy, 50.00 fps
     Stream #0.1(und): Audio: pcm_s16le, 48000 Hz, 1 channels, s16, 768 kb/s
Stream mapping:
   Stream #0.0 -> #0.0
   Stream #0.1 -> #0.1
Press [q] to stop, [?] for help
frame=  800 fps=1794 Lsize=   42899kB time=00:00:31.94  
bitrate=11002.8kbits/s
video:39058kB audio:3000kB global headers:0kB muxing overhead 1.999388%

example file url:
http://backup.playout.hu/weblink/ffmbc/test.gxf (~62MB)

Thank You!

Comment #1 on issue 110 by baptiste...@gmail.com: vcodec copy 25 -> 50 fps  
mpe2video
http://code.google.com/p/ffmbc/issues/detail?id=110

Indeed, it's a bug, I'll fix this.

Comment #2 on issue 110 by gasz.zol...@gmail.com: vcodec copy 25 -> 50 fps  
mpe2video
http://code.google.com/p/ffmbc/issues/detail?id=110

Thank you for accepting this so fast!
Waiting for the fix

Comment #3 on issue 110 by mihaly.b...@gmail.com: vcodec copy 25 -> 50 fps  
mpe2video
http://code.google.com/p/ffmbc/issues/detail?id=110

Analyzing the source code, it seems to me that the problem only occurs with  
gxf source files, so it tells me that the gxf source framerate is misreaded  
50 instead of 25!

Comment #4 on issue 110 by baptiste...@gmail.com: vcodec copy 25 -> 50 fps  
mpe2video
http://code.google.com/p/ffmbc/issues/detail?id=110

Should be fixed

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