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Re: mxo2 mini and LCD

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Re: mxo2 mini and LCD
by Bret Williams on Oct 31, 2009 at 12:36:01 am

Hmm, you know I was seeing even slight stairstepping in 1080. You can see it in those pics. Those are actually fairly large graphics. But there shouldn't be one single pixel even visible around the edges of the titles. I mean, I'm looking at Law and Order on the same monitor from a 1080i broadcast and the intro graphics are so incredibly clear it looks like an eps file in Illustrator. And I'm sure it's a pretty mpeg compressed stream at that. I can't even see an artifact.

I'm still not sure if it's the monitor or the Matrox, but I traced the stairstepping to the 24p sequence. I'm new to a full 24p workflow, but I jumped into this project halfway and upgraded some gear so I could monitor the 24p.

But oddly enough, it's the 24p that is messing with the sharpness and stairstepping. With the matrox set to 720p 23.98 and the sequence being 720p 23.98, and the matrox output set to 1080, the image is ever so slightly stairstepped. (If I choose 720 it doesn't matter what the sequence is, it looks like a web video or sd scaled up with no interpolation at all. ) But if I copy and paste the sequence into a 29.97 sequence and switch the matrox outuput to 29.97, then everything is crystal clear. Although the video cadence is a mess because FCP isn't adding the most elegant pulldown.

But I thought LCDs were supposed to be able to handle 24p? And I thought that was the whole point of me getting the mini was to do things like work in 24p and be able to monitor it. I thought the monitor would just add pulldown, or the mini would add pulldown, like a DVD player. I think what's going on is some sort of fancy frame blending that has gone awry.


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