-
Greenscreen Help
hi all,
i’ve got some newsanchors on a greenscreen. It was shot on BetaSP and captured component using Blackmagic 10bit.I’m assuming the greenscreen was lit properly ’cause we paid alot of money at some production facility to do it.
wehn i pull the footage into AE and apply keylight, i’m getting some very bad flickering around the subejcts
Anyone know a good way to get rid of this? or lend me any advice.
-
2 Replies
-
I have never used keylight,….but if you are getting ‘edge’ jitter,…then you need to work on the keying solution. Primatte and Ultimatte Advantedge are both top-notch keyers.
You also may need to do alot of garbage masking, and cutting up of your subjects to get different key setups on say for example ‘the feet’ with shadow,…etc..etc.
Can you see visible green spill on the edges of them? R U sure the lighting was done right?
-
Keylight is a good (and FAST) keyer, but you need to tweak it to get good good results. It’s default settings can produce some alpha channel artifacting that might be causing your jitter.
Open up Keylight’s “Screen Matte” twirly, and play around with the “Clip Black” and “Clip White” settings. You may also find it useful to set your “View” to “Combined Matte” when refining your key. When viewing it this way make sure the background is deep black, and you subject is solid white.
Ethan Anderson
I CAN Learn Education Systems
http://www.icanlearn.com
Reply to this Discussion! Login or Sign Up