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Mixing different types of HD material in a greenscreen project?
I’ve got some material that was shot 1080i that I need to use as background material for a greenscreen shoot that I will be shooting on my JVC HD-100 which will be in 720p. FYI, the foreground material will be simple interview type stuff with a woman.
I’m working with FCP 6 so the mixing and matching on the timeline shouldn’t be a problem, but I’d like to avoid any possible issues with the integration of the the two different flavors of HD for the greenscreen and also use as little as hard drive space as possible. Any suggestions on a space saving/greenscreen friendly compression to use? Any insightful post production strategies are welcome.
Also because this will use a fair amount of text, I was considering doing this, (the greenscreening as well as the text) in After Effects. Any feelings about FCP’s greenscreening abilities as opposed to the greenscreen built into AE 7 pro?
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8 Replies
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I would deinterlace the 1080i material to match the 720p material.
You need a plug in for keying in Final Cut Pro, the built in effects are not that great.
If you search for chroma key in this forum, you will get more answers than you want to read about keying plug ins for FCP.
Jeremy
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Well, I have a Kona LHe card which I think can do the de-interlacing as on the fly as I ingest the material. But I’m still hoping that someone can come up with a decent compression codec to use for the green screening (either in FCP or AE) . I’ve heard DVCPROHD is a good way to go but would like to get more feedback from you folks in the forum.
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The Kona LHE will not deinterlace on the fly. It will capture 1080i as 1080i.
As far as comrpession, I’d go ProResHQ if your system can handle it. I am working on my first green screen project with that codec and it’s going great. The problem you are going to have is that once your footage is shot on HDV, the damage has been done as it’s 4:2:0 color compression.
Jeremy
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This may not be the forum to ask the following question, but I’m guessing you all would know this as well. If I capture to prores 422, can work with it in AE for my compositing? As far as I know AE can pretty much ingest anything. Can it output in the same codec/resolution? FYI, I have a mac pro (3ghz dual core), 5 gigs of RAM and a Kona LHe card and breakout box if that makes a difference.
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Yes. I have found that if you trash your AE prefs, you can render ProRes out at trillions of colors (keeping the 10bit depth) out of AE as well.
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Thanks for your input Jeremy. I really appreciate it.
I assume that we are talking about after effects 7 here. Once I trash my prefs, how do I set it up in my render queue to output to the prores codec?
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Just like you would any other codec in After effects, through the output module.
Jeremy
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Right. I just thought that there was something special to be done. I’m looking at my AE output module compression settings and it appears that prores 422 and prores 422 HQ are already offered in the pull down menu.
Thanks again.
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