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After Effects chroma key
I watched Aharon Rabinowitz’s tutorial regarding “Super Tight Junk Mattes”.
It’s a very nice way to create a good looking chroma key effect.
I’m running into a problem and hopefully someone can help me with this.
When I follow the tutorial, all works fine except when the intended layer that needs to be kept has the same green color inside as the one that I’m trying to key out.
Photoshop has a “mask” feature which you can use to “mask” areas of the scene that is not to be altered, (keyed out).
Does Adobe After Effects have something similar to mask parts that are not to be keyed out? -
3 Replies
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Yes, AE does have layer masks. Go to the menu bar LAYER>ADD LAYER MASK. The you should see a yellow rectangle with points around the footage. If you do not, you will need to turn on that feature at the bottom of the footage window.
Also, I have not watched that tutorial, but you may need to make sure that your effect settings say render composite.Jonathan Pitzer
Production Manager
KIDY, KIDZ, KXVA -
Thanks for the quick reply…..but it’s not working for me. In Photoshop, when I want to keep part of the picture, I paint on the parts I want to keep with the “MASK” tool, so when I go and key out the unwanted part, the painted part remains in tact even though it’s the same color as the one that I keyed out.
I have a clip that unfortunately has the same green in the product as the green color of the background in the clip. When I key out the green in the background, part of the product with the same green color also keys out. I want to key out the background but not the product. -
You’ll need to duplicate your background layer and take the keying effect off that layer so that it does not key the product. Then you’ll draw a mask around only the product and place that layer back on top of your background. That way you’ll key the green from the BKG, but have a separate layer of the product placed back on top. Same principles as photoshop, just a different tools for the execution.
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