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Progressive Scan
Hi folks,
A bit of a silly question, but I can’t seem to find a direct answer anywhere. I rendered some scrolling text in Vegas 8, white print on black background, to eventually be burned on a video DVD, and found that it looked sort of odd – a kind of artifact-y weird flickering around the outline of the text, not pretty. Thinking this was probably an interlacing issue, I switched the project settings (and rendering settings) from “Lower Field First” to “None (Progressive Scan),” and it now looks great, with none of the artifacts.
So the question here is, if I burn a DVD with everything set to Progressive Scan (changing the appropriate setting in DVD Architect 5, of course), will this DVD be able to play in any old regular DVD player, even if not equipped with progressive scan? And if so, will it display on all TVs, even CRTs that are not equipped with progressive scan?
Thanks a million,
Howie -
3 Replies
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Not a silly question at all. You actually can’t just set your project to progressive and use it on a DVD. The DVD spec only allows for one progressive format and that’s 24p. So unless you render 24p from Vegas, DVD Architect will re-encode your video to 60i (or 50i if you are in a PAL country).
To answer your question, yes your progressive footage will play on all sets because the DVD player will interlace the video on-the-fly if the TV it is attached to cannot support progressive display.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Hi John,
Thanks for the info! Hmm… So perhaps I should backtrack and ask a different question regarding my source material. I’m starting with 25 fps progressive scan MPEGS from a PAL DVD that need to be burned to NTSC format DVD. Given that, would you recommend rendering 24p progressive scan MPEGS, or 29.97 fps interlaced MPEGS? The material certainly seems to look clearer and nicer when rendered as 24p progressive scan, but I’ve heard that the conversion from 25 fps to 24p might cause more motion-type artifacts than going from 25 to 29.97 fps, so perhaps it’s a trade off. If I do end up using 24p for the DVD, I assume I would want to (have to?) choose 2-3 pulldown?
Thanks for the help, I’m learning a lot through the process!
Best,
Howie -
> I’ve heard that the conversion from 25 fps to 24p might cause more motion-type artifacts than going from 25 to 29.97 fps, so perhaps it’s a trade off. If I do end up using 24p for the DVD, I assume I would want to (have to?) choose 2-3 pulldown?
I would just render to 25p. It’s so close to 24p (4% speed change) that it still gives the same sort of cadence and it’s still progressive. This will save a lot of headaches with the fps conversion.
~jr
http://www.johnrofrano.com
http://www.vasst.com
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