[FFmpeg-devel] VC-1 Interlaced Hardware decoding

Reimar Döffinger Reimar.Doeffinger at gmx.de
Sun Nov 18 14:56:25 CET 2012

On Sun, Nov 18, 2012 at 01:27:22PM +0100, Hendrik Leppkes wrote:
> On Sun, Nov 18, 2012 at 12:06 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> > Jeroen de Kleijn <jeroen.de.kleijn <at> gmail.com> writes:
> >
> >> However, while testing with the VC-1 1080i BBC planet earth
> >> sources I still see blocking artifacts occasionally. These
> >> were already showing before I merged the patches and thus
> >> seem unrelated to the B-frame code-path missing. I was
> >> wondering if you can test the sample mentioned below with
> >> your build using DXVA2 acceleration to see if the artifacts
> >> also show up?
> >
> > The artefacts can also be seen with mplayer -vc ffvc1vdpau and
> > correspond to artefacts visible with software (lavc) -decoding
> > so I would assume they are not XVBA-usage-related.
> >
> > Carl Eugen
> Except, there are no artifacts with DXVA2 using avcodec, or Microsofts
> DMO decoder.
> The software avcodec decoder really can't be trusted with interlaced
> material as any serious reference.

None of that contradicts Carl's statement that those issues seem
to have nothing to do with XVBA.
It seems rather like it would be an issue in code shared by all
of software, XVBA and VDPAU decoding, but something that either
isn't used or ignored for DXVA2...

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