>On Wed, 2003-09-03 at 17:23, Vidiot wrote: >> 768x576 is not a digital spec (that I've heard of). For PAL it is 720x576. >> Frame rate is a given, i.e., the NTSC or PAL rates. > >768x576 is the square pixel (1:1) variant of the "official" PAL >resolution of 720x576 (CCIR601). The advantage of square pixel is that >you don't need scaling over the display to make the ratio look good. >I.e., every video pixel becomes a screen pixel and you're done. For >CCIR601, the pixel ratio isn't exactly 1:1, so you need to rescale for >playback/overlay for it to look as it's supposed to. >Ronald >From the top of my head, I think it is 1.2:1 for PAL and 0.9:1 for NTSC. In any event, AFAIK, 768x576 is not an official digital sample size. That means finding a card to do it might be a little tough. MB -- e-mail: vidiot@xxxxxxxxxx /~\ The ASCII \ / Ribbon Campaign [So it's true, scythe matters. Willow 5/12/03] X Against Visit - URL: http://vidiot.com/ / \ HTML Email