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ProRes timing problem on capture
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Well I just took a look at the AJA Kona forum here and there’s a long thread there about this exact problem – I haven’t finished reading yet so I’m hoping there’s also a solution….
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[Borjis] “720P is 60fps, unless your using an HDV codec where it can be 30fps or 24fps.”
that is not correct.
720p is always playing back as 60 frames on output, there is no exception, while the various frame rates are available the content will only playout as video when it has the pulldown properly added to make the video stream 60fps.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows -
Got ya. 720p60 is your only option. You can capture 720p30 stuff from a Varicam, but there are flags in the data stream of which FCP understands, and then removes the duplicate frames. I doubt the XBox 360 passes information like that. Since you are using ProRes, the data rate should come down dramatically from Uncompressed and still be 10 bit and full raster…much better than DVCPRO HD, but at a bigger file size.
Jeremy
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Yeah, the game engine is doubling the frames. My idea was since it’s an exact 2:1 reverse pulldown it would be great for my needs to drop the unnecessary frames (kind of like capturing in 24PN does when recorded to a P2), and then I’d export the final cut as 59.94 for broadcast, and keep it as 29.97 for the game asset and let the game engine do it’s duplication again.
It appears that I just plain can’t use ProRes in HD; my G5 isn’t fast enough 🙁
Too bad since my dual 2.7 w/ 6800 Ultra and XServe RAID was the top of the line when it was purchased new less than 2 years ago…. -
[gary adcock] “that is not correct.
720p is always playing back as 60 frames on output, there is no exception, while the various frame rates are available the content will only playout as video when it has the pulldown properly added to make the video stream 60fps.”
Its partially correct for the purposes of this discussion.
didn’t feel like going through the whole spiel. 🙂
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