[FFmpeg-devel] Parallelization of FFmpeg

[wm4]

On Mon, 29 Dec 2014 11:31:36 +0000 (UTC)
Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> David Ison <paralleldev <at> dtison.net> writes:
> 
> > > (And I suspect parallelization of vc1 is not
> > > an easy task.)
> > >
> > > Thank you for any contribution!
> > Are you referring to the file
> > 
> > libavcodec/vc1.c   ?
> 
> To libavcodec/vc1*, yes
> 
> An easier choice may be parallelization of the 
> scale filter: It is possible to let libswscale 
> work on slices, working on several slices at 
> the same time should allow for a big speedup 
> for some conversions.

I don't think this will work. libswscale makes very specific
requirements on how you scale by slices, and it doesn't look like you
can actually scale different slices with a different context.

I'm not a libswscale expert, though.