How to Improve Jittery Edges on Video Composites when Keying, by Using Neatvideo

by MooiKasteel.Com

So you've recorded some shots on a blue-screen, but they don't seem to be keying out all that well?  Well, in case of emergency, this might help:

There may be five problems with your footage: 

1.  The blue-screen footage is in Standard Definition

2.  The blue-screen footage is shot on DV!  Oh no. 

3.  The blue-screen footage was shot under very warm lighting, changing the blue to a color that don't key good

4.  The blue-screen footage is very noisy, especially when blown up to High Definition.   When using this as blue-screen layer, your composited character's edges keep looking like that stupid cartoon Ed, Edd & Eddy with the edges always jittering and moving.  I hate that.

5.  In a wider shot, the blue-screen might be lighter on the left side and darker to the right.  This causes the shade of blue to be different in different parts of the  footage.

So doing compositing work with this isn't like switching on the kitchen light.  Or click click and you're done.  Oh no, this takes a lot of attempts and tries etc. 

Of course, fixing the 5 problems right from the start when filming the footage would be best.  Remember that and do that in future. 

However, since we are where we are, I have discovered a technique that may just work under the circumstances. 

1.  First, clean up the blue-screen footage for use, by making the blue screen smoooooooth with Neatvideo .  In fact, I think Neatvideo is a lifesaver in this case. 

2.  Render out the file you applied neatvideo to and use that as your blue-screen footage that you're going to apply the keying to.  What you will notice is that the blue is now much smoother and noise-free! Thank goodness.

3.  Start keying, perhaps even do a test render.  Your edges should now be a lot smoother, without jumping about.  They won't like jitter around all over the place, and they're much more solid and stable. 

4.  Do your blue screen fine tuning and keep doing a few tests.  Try all the different settings of your keyer if you don't know them all very well yet.  Sometimes when something looks crap, I just delete the keying filter and start over again until I get satisfying settings. 

5.  Finally you should have something that you're satisfied with.  Now you got your base footage that you can add the video look and all that final jazz to. 

Well that's it really.  Your base footage is now ready for color treatment and so on and on.  Not too bad, maybe not perfect but for an emergency this should be a technique that should get you out of the mud.  Still of course best to do it as good as possible when filming it in the first place.   

So, remember to use Neatvideo when you got this problem of noisy footage that creates jittery composites.  (I know the Neatvideo website doesn't look very impressive, but the plug-in really works wonders on video noise and grain, even the stability of composites.)

Get Neatvideo, the world's best video noise reduction software (All countries)