> I meant output. For example 1080i HDTV video (from digital stream/file
> source) usually needs to be deinterlaced. Obviously this can be done also in
> software so while hq hardware acceleration would be very nice, it is not
> really a must. Deinterlacing 1080i with quality requires quite a lot of
> processing capasity, and it seems like a problem that would parallelize
> quite nicely on hardware.
That doesn't make a lot of sense to me. 1080i is an interlaced mode.
If it's to be deinterlaced, that would be done by the monitor/tv.
Not all monitor can deinterlace and most don't do very good job. And to keep other features such as subtitles and menus constant it would be preferable to keep the output display mode constantly at the native resolution of the display.
To me optimum sequence for 1080i would seem something like mpeg2 decode -> deinterlace -> scale to display resolution -> overlay subtitles, menus, pip etc -> output to display using DVI and avoid any processing at the display device.
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