[Ffmpeg-devel] trouble with h264.c

Guillaume POIRIER poirierg
Fri May 13 16:55:33 CEST 2005


On 5/13/05, M?ns Rullg?rd <mru at inprovide.com> wrote:
> Scott Treude <scott at niceshoes.com> writes:
> > Hello,
> >
> > I'm trying to convert an h264 quicktime to a series of ppm files and
> > I'm receiving the following error:
> >
> > ffmpeg: h264.c:2316: mc_dir_part: Assertion `pic->data[0]' failed.
> >
> > The command I'm using is:
> > /usr/local/bin/ffmpeg -ss 100  -t .2 -i myMovie.mov test%d.ppm
> >
> > It seems to work fine without the -ss; so is seeking a problem with h264?
> This is a know problem, at least to me.  Unfortunately, I'm not sure
> how to fix it.  The problem is that a reference picture used by the
> picture being decoded is unavailable, since it was before the point
> you started decoding at.
> Michael, Loren, what should we do about this?  It used to work, a long
> time ago.  IIRC, it broke around the time B-frame support was added.

Hummm... not so sure. I encoded a movie no more than 2-3 weeks ago
that played fine, but now it triggers that assertion error.
AFAIR, B-frame support is much older.


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