[Ffmpeg-devel] Sorenson H264 , ffmpeg CRASH , (BUG ? or not supported ? )

Antoine Tremblay hexa00
Fri Oct 14 22:43:29 CEST 2005


Humm

K thx it'll check it out :)


On 10/14/05, Steve Lhomme <steve.lhomme at free.fr> wrote:
>
> I just checked the file and the code of ffdshow.
>
> the lavc of ffdshow has 2 differences. One in the extradata handling,
> and one in the nal_size computation. IMO you should have a look. (as
> plain lavc doesn't work, and ffdshow does).
>
> Steve Lhomme wrote:
> > If it's using SVQ3 as the FourCC you might try this patch...
> >
> > Mike Melanson wrote:
> >
> >> M?ns Rullg?rd wrote:
> >>
> >>> Mathieu Monnier <manao at melix.net> writes:
> >>>
> >>>
> >>>>>
> http://www.openrapids.net/~hexa/Sorenson_AVC_PRO_192kpbs_30fps_320_240_CBR_AAC_LC_32kpbs_32khz_16_stereo_10s.mp4
> >>>>>
> >>>>
> >>>>
> >>>>
> >>>> FFDShow (30/09) decodes that without issues (nero's parser, or
> haali's
> >>>> ), so does VLC (09/09).
> >>>
> >>>
> >>>
> >>>
> >>> xine is fine as well. Looks like an lavf bug.
> >>>
> >>> Mike?
> >>
> >>
> >>
> >> My first guess would be something about extradata-- the QT headers
> >> probably contain some data that the decoder needs.
> >>
> >
> >
> > ------------------------------------------------------------------------
> >
> > Index: libavcodec/svq3.c
> > ===================================================================
> > RCS file: /cvsroot/ffmpeg/ffmpeg/libavcodec/svq3.c,v
> > retrieving revision 1.28
> > diff -u -r1.28 svq3.c
> > --- libavcodec/svq3.c 14 Jul 2005 21:39:35 -0000 1.28
> > +++ libavcodec/svq3.c 14 Oct 2005 20:17:22 -0000
> > @@ -829,7 +829,7 @@
> > GetBitContext gb;
> >
> > size = BE_32(&extradata[4]);
> > - init_get_bits (&gb, extradata + 8, size);
> > + init_get_bits (&gb, extradata + 8, size*8);
> >
> > /* 'frame size code' and optional 'width, height' */
> > if (get_bits (&gb, 3) == 7) {
> >
> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel at mplayerhq.hu
> > http://mplayerhq.hu/mailman/listinfo/ffmpeg-devel
>
> --
> robUx4 on blog <http://robux4.blogspot.com/>
>
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