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using a white cyc with compositing
HI,
We’re shooting a commercial video for the internet and the director wants to use a white background (cyc) with an interview subject. She would like me to pull a matte from this and composite some images behind the subject during the interview.
I’m familiar with a green screen in this instance but not a white one. How does one pull a white matte, especially if the subject may also have some white in them? I know I can use the luma traveling matte but I’m afraid of drop off in the subject.
Any advice about how to do this in FCP?
Thanks,
rachel -
2 Replies
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I’m not clear if you want to have images over the white BG, or use that BG to key and completely replace the white with something else. If the former and the images have to pass behinf talent, you’ll be doing a lot of rotoscoping. If the later, you’d have much more control using a green screen. Even if you want a white BG, it makes sense to stay with green screen. If you shoot on white and have to adjust color on talent, the white will also change. If you’re on green, you can mess with a look for talent and keep the BG stable.
John
MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.5 QT7.5.5 Kona 3 Dual Cinema 23 ATI Radeon HD 3870, 24″ TV-Logic Monitor, ATTO ExpressSAS R380 RAID Adapter, PDE enclosure with 8-drive 6TB RAID 5
FCS 2 (FCP 6.0.5, Comp 3.0.5, DVDSP 4.2.1, Color 1.0.3)Pro Tools HD w SYNC IO, Yamaha DM1000, Millennia Media HV-3C, Neumann U87, Schoeps Mk41 mics, Genelec Monitors, PrimaLT ISDN
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Just saw a post in FCP Basics by Zane Barker about using a difference matte effect to achieve a key. There are two important considerations: the camera must be fixed (same as with green screen) and you need a plate where the interviewee is not in frame. Here’s a tut: https://www.fcptips.com/final-cut-pro/difference-mattes-video_714208160.html
John
MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.5 QT7.5.5 Kona 3 Dual Cinema 23 ATI Radeon HD 3870, 24″ TV-Logic Monitor, ATTO ExpressSAS R380 RAID Adapter, PDE enclosure with 8-drive 6TB RAID 5
FCS 2 (FCP 6.0.5, Comp 3.0.5, DVDSP 4.2.1, Color 1.0.3)Pro Tools HD w SYNC IO, Yamaha DM1000, Millennia Media HV-3C, Neumann U87, Schoeps Mk41 mics, Genelec Monitors, PrimaLT ISDN
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