First, I am working in DV time frame and I have experienced the preview quality issue on other things so I use as my ‘gold standard’ rendering some or all of the test screen capture with Premiere as an AVI file, and then viewing it with Windows Media Player. The AVI in to Premier looks great in MP, the AVI out (and thus to a TV) looks crappy, almost like half or a third of the horizontal scan lines are thrown out (for example a piece of text with the capital F may have the entire top horizontal portion missing).
Not sure on the square vs .9 pixel ratio but my instinct tells me I’m a long way from worring about that one.
Finally, I tried uncompressed in Camtasia. It was no different.
Do I need a scan converter box like the AVT-3150 in order to make it look good?
Thanks