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HELP!!! – Chroma Key
I just received some footage that needs to be keyed – bluescreen. The footage was shot with a Sony CineAlta HD camera and digitized with an AJA Io using 10 bit uncompressed. The footage is very dark. Should I correct the levels before I key it or should I key the footage first then correct? I can send someone a sample of the footage if needed. This is for a banquet Monday night and I’m a bit (very) behind. Any assistance would be GREATLY appreciated.
FCP 5, AEIS PRO 7.0, AJA Io, 1 case of Busch Light.
Thanks!
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6 Replies
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hmmm.. why don’t you just try both ways and see what works best? there’s no hard + fast rules here. i’d be trying everything to pull the key, badly lit blue/green screens are a bugger.
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hmmm.. why don’t you just try both ways and see what works best? there’s no hard + fast rules here. i’d be trying everything to pull the key, badly lit blue/green screens are a bugger.
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The key is perfectly balanced and pure, but the subjects are very dark. I can pull a perfect key, I was just wondering if I should correct the footage before I key it. Also, when I try and improve the levels, a lot of grain is introduced in the dark areas. This is 10-bit uncompressed footage from HDCAM. UG!!!
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If you can pull a perfect key then i wouldn’t bother colour correcting before keying… unfortunately there’s not a lot you can do when they’ve shot dark – it’ll be a fine balance between getting as much detail back as you can and not making it overly grainy…
good luck
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Thanks for the tip… and the luck!
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dont forget that while you might have 10bit uncompressed footage, the camera is recording to a compressed format.
also, from my experience, some cameras seem to be worse than others when it comes the artifacting in the footage. guess it might depend on how many times it was rented out…
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