[Ffmpeg-devel] SIGSEGV in h264.c, stream is available for debugging

Michael Niedermayer michaelni
Tue Jan 23 12:57:26 CET 2007


Hi

On Fri, Sep 09, 2005 at 04:06:03PM -0300, Dario Andrade wrote:
> 
> >
> > I've got a SIGSEGV decoding h264, the stream was generated by x264.
> > 
> > 
> > The following stream was recorded live and begins from the middle:
> > 
> > 
> > http://www.datscom.com.br/~dario/dump.SIGSEGV.h264
> > 
> >
> >the following command line reproduces the fault (the source code is updated
> >from cvs as of 09/05/2005 08:13pm GMT-3).
> >
> >$ ./ffmpeg -i dump.SIGSEGV.h264 -f null dump.SIGSEGV.h264.null
> >
> 
> Has anyone got any status on that subject?
> Anyway, I've managed to increase the number of max
> reference pics (at least from what I could understand from the code), from
> 16 to 32 in h264.c, and it seems to help a little (the stream above now
> decodes to the end).
> 
> btw, nice symbolic constants would be nicer than things like that spread all
> over the code:
> for (i = 0; i < 16; i++) ...
> Picture* delayed_pics[16]; etc... :-)
> 
> The above stream now decodes ok, but the following one fails with
> "getbuffer() failed" and consequently (no checks for the getbuffer calls)
> SIGSEGV.
> I assume there is some leak somewhere?
> 
> http://bule.ip.tv/~dario/dump.SIGSEGV.1.h264
> 
> 
> Again, I'd appreciate any help on the subject.

have these bugs been fixed? the urls dont work anymore ...

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

The misfortune of the wise is better than the prosperity of the fool.
-- Epicurus
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