and set it to Alpha Matte, the new text layer. So if you have elements to key out, or you’re simply interested in keying out black backgrounds, follow these quick steps for great results. ![]() The differences between Set Matte Effect and a Track Matte in After Effects can be profound. To sum up, if you want the video to run through a Alpha Channels and Premultiplication. After Effects In conclusion, track matte is a useful feature in After Effects which will help designers to make interesting graphics. Create a new composition called ‘Scene Using Videos with Alpha Channels Below are instructions on how to take videos with luma mattes and turn them into assets with functional alpha channels. ![]() ![]() The first option, Alpha Matte, will cut the bottom layer. Change the Track Matte switch for the fill layer to Alpha Matte. ![]() Make sure your “Modes” column is visible, then on layer 2, click on the “TrkMat” dropdown.
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