[Ffmpeg-devel] '-bt 0' option causes an Assertion failure of ffmpeg

[Michael Niedermayer]

Hi

On Thu, Dec 21, 2006 at 06:41:53PM +0100, Baptiste Coudurier wrote:
> Hi
> 
> Borat wrote:
> > Hello,
> > 
> > I just want to bring to your attention that executing
> > 
> > ffmpeg -i in.mpeg -bt 0 out.mpeg
> >                   ^^^^^
> > 
> > terminates ffmpeg in an unusual way. The full output is:
> > 
> > ##### start #####
> > FFmpeg version SVN-r6218, Copyright (c) 2000-2004 Fabrice Bellard
> >   configuration:  --enable-mp3lame --enable-libogg --enable-vorbis --enable-faad --enable-faac --enable-xvid --enable-x264 --enable-mingw32 --enable-a52 --enable-dts --enable-pp --enable-gpl --enable-memalign-hack --enable-amr_nb --enable-amr_wb --enable-swscaler --enable-avisynth
> >   libavutil version: 49.0.0
> >   libavcodec version: 51.14.0
> >   libavformat version: 50.5.0
> >   built on Sep 10 2006 21:00:18, gcc: 4.0.3
> > Input #0, mpeg, from 'in.mpeg':
> >   Duration: 00:00:24.5, start: 0.184911, bitrate: 3331 kb/s
> >   Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x480, 9800 kb/s, 29.97 fps(r)
> >   Stream #0.1[0x80]: Audio: ac3, 48000 Hz, stereo, 192 kb/s
> > Output #0, mpeg, to 'out.mpeg':
> >   Stream #0.0: Video: mpeg1video, yuv420p, 720x480, q=2-31, 200 kb/s, 29.97 fps(c)
> >   Stream #0.1: Audio: mp2, 48000 Hz, stereo, 64 kb/s
> > Stream mapping:
> >   Stream #0.0 -> #0.0
> >   Stream #0.1 -> #0.1
> > Assertion failed: q>0.0, file ratecontrol.c, line 730
> > 
> > This application has requested the Runtime to terminate it in an unusual way.
> > Please contact the application's support team for more information.
> > ##### end #####
> > 
> 
> Issue confirmed with latest svn."-bt 0" causes assertion.

-bt 0 is invalid, if its within the valid range in AVOption then the
min should be changed to 1 or bigger

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

it is not once nor twice but times without number that the same ideas make
their appearance in the world. -- Aristotle
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