Chris Burel <[email protected]> added the comment:
It breaks in the same way even if a video stream is supplied:
> /usr/local/ffmpeg/bin/ffmpeg -y -i 01.avi -i 01.ass -vcodec copy -acodec copy
-scodec xsub new01.avi
FFmpeg version git-svn-r26004, Copyright (c) 2000-2010 the FFmpeg developers
built on Dec 14 2010 10:02:50 with gcc 4.3.2
configuration: --prefix=/usr/local/ffmpeg --enable-avfilter --enable-bzlib
--enable-gpl --enable-libfaac --enable-libmp3lame --enable-libvorbis
--enable-libxvid --enable-nonfree --enable-postproc --enable-pthreads
--enable-shared --enable-x11grab --enable-zlib --disable-stripping
libavutil 50.34. 0 / 50.34. 0
libavcore 0.16. 0 / 0.16. 0
libavcodec 52.99. 1 / 52.99. 1
libavformat 52.88. 0 / 52.88. 0
libavdevice 52. 2. 2 / 52. 2. 2
libavfilter 1.69. 0 / 1.69. 0
libswscale 0.12. 0 / 0.12. 0
libpostproc 51. 2. 0 / 51. 2. 0
[mpeg4 @ 0x9e4ce00] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from '01.avi':
Metadata:
encoder : Lavf52.73.0
Duration: 00:44:29.00, start: 0.000000, bitrate: 1354 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 704x396 [PAR 1:1 DAR 16:9], 29.97 tbr,
29.97 tbn, 29.97 tbc
Stream #0.1: Audio: mp3, 48000 Hz, 2 channels, s16, 128 kb/s
[ass @ 0x9e4d860] Estimating duration from bitrate, this may be inaccurate
Input #1, ass, from '01.ass':
Duration: N/A, start: 1.540000, bitrate: N/A
Stream #1.0: Subtitle: ass
Output #0, avi, to 'new01.avi':
Metadata:
ISFT : Lavf52.88.0
Stream #0.0: Video: mpeg4, yuv420p, 704x396 [PAR 1:1 DAR 16:9], q=2-31,
29.97 tbn, 29.97 tbc
Stream #0.1: Audio: libmp3lame, 48000 Hz, 2 channels, 128 kb/s
Stream #0.2Floating point exception
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FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/issue2424>
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