Attila Kinali wrote:
The most common used subsampling format is 4:2:0 where there is
one U/V sample per 4 Y sample. Ie one U/V sample per every second
pixel and every second line.
and having 4:2:2 will get you professionnal users
And i wouldn't impose that onto the CPU. The Matrox G200 used
and interleaved YUV format, which mean that the player software
had to first convert the planar data into a interleaved format
and then showel it over to the card. In the case of MPlayer this
made a 10-20% performance los for the whole player (comparing
the G200 to the G400), which means that for the transfere the
los must have been somewhere between 50% and 80%.
imho, the thing should accept both planar and interleaved
professionnal systems use interleaved, as they work from streams
_______________________________________________
Open-graphics mailing list
[email protected]
http://lists.duskglow.com/mailman/listinfo/open-graphics
List service provided by Duskglow Consulting, LLC (www.duskglow.com)
