[FFmpeg-devel] Issue803: libmp3lame: output buffer too small

Michael Niedermayer michaelni
Fri Feb 20 13:12:59 CET 2009

On Fri, Feb 20, 2009 at 09:48:15AM +0100, Marc Mason wrote:
> Hello,
> This patch was sent to ffmpeg-user by Yuriy Kaminskiy.
> It is supposed to address issue 803.
> http://roundup.ffmpeg.org/roundup/ffmpeg/issue803
> -- 
> Regards.

> From: Yuriy Kaminskiy <yumkam at mail.ru>
> To: ffmpeg-user at mplayerhq.hu
> Date: Wed, 04 Feb 2009 20:14:45 +0300
> Subject: [FFmpeg-user] [patch] Re: Issue803: libmp3lame: output buffer too
> 	small
> Andrea Barbieri wrote:
>> the generic error actually means "output buffer too small" so
>> libavcodec/libmp3lame.c should be capable of handling such error
>> condition and recover.
> Yup. I've looked into traces and code, and think that problem is ffmpeg 
> calls lame_encode_flush() multiple times, and newer lame doesn't like that 
> (it adds new frame(s) each time, and eventually overflows buffer space).
> With attached patch it seems work nice with lame-3.98.2 (still, this may be 
> lame bug, don't know).

"may be a lame bug" is not enough, either it is n which case lame needs fixing
or its not a bug in the lame code in which case the docs of lame need to be

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Many that live deserve death. And some that die deserve life. Can you give
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even the very wise cannot see all ends. -- Gandalf
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