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Promotion Video Help
hi
I’m going to create a promotion video for å project i’m working on.
its gonna look like this:https://www.youtube.com/watch?v=xGtA98TWvuE
My guess would be to shoot my actors in front of a greenscreen, key out the green, place them in 3d space, then animate a 3d camera.
Is this the way to go? There are other possibilities, such ass lighting a white wall instead of a greenscreen or animating the actors instead of a 3d camera? Any thoughts or workflow tips?
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4 Replies
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It looks like this particular video was done on a white screen. Look at the woman’s hair at 0:46 as she passes in front of the people behind her.
It can definitely be done either way. Hand drawn mattes or rotoscoping will probably be necessary if you use a white screen. Lots of green fringing and spill will be visible against white if the green screen isn’t perfectly lit and keyed.
On a budget, I personally would attempt this against a white screen first. Definitely test and research lighting before doing the real thing.
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This was not shot against white. Definitely green screen, in fact the girl at 46 seconds is proof that it was green screen (unless someone spent days rotoscoping it). I’ve done many green screen shoots and like Dave said, do your research on Chroma Keying. You need a good camera that does 4:4:4 Chroma Subsampling or 4:2:2 at the minimum (XDCAM, DVCPRO HD). HDV is not good enough, unless your budget is extremely low.
Usually cameras don’t record at 4:4:4 because of how much space it takes up and the bandwidth requirement, so in this situation you would run HD-SDI out of the camera and capture it live onto a computer on location using a 4:4:4 codec… and some serious bandwidth for the hard drives (multiple drives running in raid 0). Like Dave said, do your research.
Jon Geddes
Motion Graphics Designer
http://www.precomposed.com -
The spaces between the hairs were not keyed out, and were white, which is why I assumed white background. I’m not familiar with keying 4:4:4 footage, but I know on my XDCAM those spaces would have been green. I suppose its possible the green was replaced with white.
Green screen is probably the best solution then.
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Lot of thoughts here, appreciate it.. And as a result I went with the green. I have som experience with this already
This was shot with a HV20 and a couple og worklights. Keyed using keylight in AE.
Here’s the result:
https://img22.imageshack.us/img22/8480/96491286.jpg
As you can see this wasn’t all that bad, some artifacting but all in all i’m pretty sadisfied.
Thanks guys.
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