[FFmpeg-devel] Question regarding DV decoder

[Benjamin Larsson]

Thorsten Jordan wrote:
> Dear ffmpeg developers,
>
> at the moment i am testing if it would be possible to get DV video
> decoding at realtime on a VIA Epia 1Ghz (C3-2, MMX, SSE, i686 compatible).
> The mainconcept decoder manages to decode with 28-34ms per 40ms frame,
> so it would be possible, where ffmpeg fails to do it below 40ms at average.
>
> The dv video decoder code seems to be pure C (no mmx) with a FIXME that
> tells one should use dsputils rather. There seem to be some if's in
> inner loops, that could be factorized out. The code hasn't been touched
> since 8 monthes.
>
> Who maintains it, or may be so kind to give me a bit more information
> about it, e.g. like possibility of mmx support?
>
> If my company decides to use it, i can myself try to add mmx support or
> other speedups, hopefully pushing it below 40ms.
>
> Thanks...
>
>   
$ grep -i dv MAINTAINERS
  dv.c                                  Roman Shaposhnik
  dc1394.c, dv.c                        Roman Shaposhnik

But there are others who have submitted significant patches. Search the 
archives. And optimizations are very welcome.

MvH
Benjamin Larsson