improve blue for keying

[Doeke Wartena]

I got the material delivered, I can’t reshoot it.
This is my first time chroma keying, I will give it a shot.

THX

[Chris Wright]

There’s good news though, no matter how bad the keying is, you can simply roto it with masks with the pen tool and keyframe mask keysframes. Perfect!

btw, I actually got a pretty good key off this, but it’s weird how pixelated the footage it. Mainly just use a shrink matte down, soften the edge by 2 pixels, and turn on light wrap and color correct. Gotta luv primatte.

a must read:

https://generalspecialist.com/2006/10/greenscreen-and-bluescreen-checklist.asp

[Brendan Coots]

You can’t color correct your way out of bad chromakey footage. Most keying applications, including Keylight, are “color difference” based, which means they look at the difference in color between your backdrop and the actor to know which parts to remove. If you boost the blues in your footage, the blue in the actor goes up just as much as the backdrop and the relationship between actor and backdrop is exactly the same as it was.

Brendan Coots
Splitvision Digital
http://www.splitvisiondigital.com

[David Bogie]

However, you CAN stack up muliple copies of your lousy key footage and apply lots of different effects to each layer until the final has a good solid matte.
Almost every good chromakey requires at least four fitlers:
The keyer
Spill suppression
One or more garbage or holdback masks
Some color correction or contrast adjustments

bogiesan