New Video Decode and Presentation API

[Andy Ritger]

Sorry for the slow response, Torgeir.

> Neither, I'm trying to not use deinterlacing in the graphics card.
>
> Is it technically (theoretically) possible to rearrange the order of merging the fields and scaling?

I think if you want to scale, then you really need to deinterlace, first.

The deinterlacer in NVIDIA's VDPAU implementation was improved in the
latest 180.35 beta:

     http://www.nvnews.net/vbulletin/showthread.php?t=128939

If you're having problems with the deinterlacer, and that is your
motivation for trying to avoid deinterlacing, then it might be worth
evaluating the deinterlacer updates.

I hope that helps,
- Andy


On Wed, 18 Feb 2009, Torgeir Veimo wrote:

>
> On 17 Feb 2009, at 18:05, Andy Ritger wrote:
>
> Are the even and odd frames scaled individually before applied to the
> resulting surface, or are they applied to the screen, then scaled?
>
> I believe the latter: the content is deinterlaced at the resolution
> of the content, and then the progressive frame is scaled to the size
> specified by the video player.
>
> The documentation here may be helpful (particularly the data flow diagram):
>
>   ftp://download.nvidia.com/XFree86/vdpau/doxygen/html/index.html
>
> Deinterlacing is done in the VdpVideoMixer, and I expect scaling is done
> as part of constructing the VdpOutputSurface.
>
> It may be worth looking at what deinterlacing configuration your video
> player is using.  E.g., is it requesting temporal or temporal-spatial
> deinterlacing?
>
> Neither, I'm trying to not use deinterlacing in the graphics card.
>
> Is it technically (theoretically) possible to rearrange the order of merging the fields and scaling?
>
> --
> Torgeir Veimo
> torgeir at pobox.com<mailto:torgeir at pobox.com>
>
>
>
>
>