I just spent some time comparing the quality of the various jitter
output modes when using a 25 fps 768x576 DV-PAL Quicktime in
fullscreen display mode.
The direct to window option provides a clearly visible quality boost,
compared to the uyvy videoplane example (which looks best compared to
the rest of the jitter options).
It is for instance also clearly visible when you open the clip in
quicktime player and put it in fullscreen mode, and then switch to
the same clip playing through the uyvy videoplane example patch. I
need jitter operations so I'll have to use uyvy anyhow, but am
wondering why there is such a difference ?