[FFmpeg-devel] R10953 broke MPEG decoding

[Benoit Fouet]

Luca Abeni wrote:
> Hi Aurelien,
>
> Aurelien Jacobs wrote:
> [...]
>   
>> Can't reproduce here:
>>
>> $ ./output_example test.mpg
>> Output #0, mpeg, to 'test.mpg':
>>     Stream #0.0: Video: mpeg1video (hq), yuv420p, 352x288 [PAR 0:1 DAR 0:1], q=2-31, 400 kb/s, 25.00 fps(c)
>>     Stream #0.1: Audio: mp2, 44100 Hz, stereo, 64 kb/s
>> [mpeg @ 0x784240]buffer underflow i=0 bufi=2002 size=6731
>> [mpeg @ 0x784240]buffer underflow i=1 bufi=0 size=208
>> [...]
>>
>> $ ./ffmpeg -i test.mpg
>> FFmpeg version SVN-r10958, Copyright (c) 2000-2007 Fabrice Bellard, et al.
>>   configuration:
>>   libavutil version: 49.5.0
>>   libavcodec version: 51.48.0
>>   libavformat version: 51.18.0
>>   built on Nov  8 2007 13:55:24, gcc: 4.2.3 20071014 (prerelease) (Debian 4.2.2-3)
>> Input #0, mpeg, from 'test.mpg':
>>   Duration: 00:00:05.0, start: 0.000000, bitrate: 645 kb/s
>>     Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 352x288 [PAR 1:1 DAR 11:9], 104857 kb/s, 25.00 fps(r)
>>     Stream #0.1[0x1c0]: Audio: mp2, 44100 Hz, stereo, 64 kb/s
>> Must supply at least one output file
>>
>>     
>>> The regression tests also fail
>>>       
>> Not here:
>>
>> $ make test
>> [...]
>> Regression test succeeded.
>>     
>
> So, I guess it is a compiler or libc issue. I am on Ubuntu 7.04 (gcc 4.1.2 and
> glibc 2.5).
> I'll do some tests on Debian this evening.
>
> Is anyone else seeing this kind of failure, or is it just me?
>
>   

i do too:
./ffmpeg_g -y -flags +bitexact -dct fastint -idct simple -i
./tests/data/b-libav.mpg -f crc ./tests/data/ffmpeg.crc
FFmpeg version SVN-r10958, Copyright (c) 2000-2007 Fabrice Bellard, et al.
  configuration: --cc=gcc-4.1.2 --prefix=/usr --enable-gpl
--enable-libmp3lame --enable-libxvid --enable-libogg --enable-libvorbis
--enable-libx264 --enable-libfaad --enable-libfaac --enable-libamr-nb
--enable-libamr-wb --enable-libtheora --enable-liba52
  libavutil version: 49.5.0
  libavcodec version: 51.48.0
  libavformat version: 51.18.0
  built on Nov  8 2007 14:15:43, gcc: 4.1.2 (Gentoo 4.1.2 p1.0.1)
./tests/data/b-libav.mpg: could not find codec parameters

-- 
Ben
Purple Labs S.A.
www.purplelabs.com