On Sun, 22 Apr 2007, Attila Kinali wrote:
Nice explanation, but it's wrong IMHO. First you need to
realize that frames in video codecs are sampled _below_
the niquist criteria. That's why there is a need for
motion compensation. The second thing is that human
eyes don't work like ears, they don't percieve movements
as signal modulations. So the whole argumentation
about niquist frequency while showing movies falls flat.
Of course they are just sampled on whatever frame rate of choice, but if
you _resample_ them while playing... And that's what actually happens when
video is played using asynchronous refresh. Nyquist...
Please test with the clips from:
http://www.kingcot.eclipse.co.uk/unichrome/tvoutTest.html
These play _just_ as they should with some real mpeg decoding hw (like
dvd-player and dxr3-decoder) and crt. If you know how to do it on
linux to 50Hz lcd, I'd really really like to know how. 100 Hz crt is just
fine, but my panel can't do that.
It should be simple as
mplayer -vo xv -vf tfields=1 interlace_test2.mpeg
but it's not.
-Vesa
_______________________________________________
Open-graphics mailing list
[email protected]
http://lists.duskglow.com/mailman/listinfo/open-graphics
List service provided by Duskglow Consulting, LLC (www.duskglow.com)
