[FFmpeg-devel] FOMS 2009 FFmpeg outbrief

Michael Niedermayer michaelni
Fri Jan 23 17:59:19 CET 2009

On Fri, Jan 23, 2009 at 08:57:36AM -0800, Dan Dennedy wrote:
> A comment on libavformat from MLT dev (me)...
> On Wed, Jan 21, 2009 at 5:39 PM, Fran?ois Revol <revol at free.fr> wrote:
> >> 5. CONCERN: Suitability of libavformat API
> >>
> >>    Libavformat API is considered inadequate for 'tight' integration
> >> with
> >>    gstreamer.
> >
> > I remember writing an lavf demuxer addon for BeOS, but never finished
> > it because the seeking semantics were not compatible, lavf seeked the
> > whole stream at once, while BeOS handles seeking on a per track basis.
> > It worked very well except for streaming...
> >
> > I suppose it's the same for gstreamer.
> 99% of MLT users use libavformat for handling 99% of its audio/video
> files where the primary applications are video editing (kdenlive) and
> automated playout. Of course, it is not perfect on everything, but it
> works good for a lot of files. We use separate AV contexts for audio
> vs. video, which is not optimal, but works to support independent
> track seeking.

Could you explain me _why_ you do independent track seeking?
What would fail if you did not?

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Complexity theory is the science of finding the exact solution to an
approximation. Benchmarking OTOH is finding an approximation of the exact
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