Hello everyone, Often times individuals come on the forums in search for a way to apply the Track Matte effect over multiple layers in their timeline, to which the response on the forums are usually "to just use the Set Matte effect, it should work just like the Track Matte command"... Often times, these individuals come back to the forums with complaints about how the Set Matte effect just is not working for them at all, to which the response on the forums are usually "to introduce some 'workaround' method that adds too many extra steps to ones workflow or just makes the entire situation more complicated than it ever should be" when trying to pull off simple effects in the program. I have conducted a test showing that Set Matte does not perform 100% like the Track Matte command, and those who claim it does are wasting other people's time. Set Matte does work like Track Matte, but only in certain circumstances as you will see from the Images I attach below. The 1st image is a screenshot of the After Effects Composition I have set up using: Shapes, Solids, Text, a .png, and a .mp4 file to compare how they act with one another when using both Set Matte and Track Matte. The other two images are of charts comparing how Set Matte and Track Matte differ when they are used with different types of layers. Take a look at the Set Matte chart, some layer combinations just do not work like how the Track Matte command works. In conclusion, when people say that the Set Matte effect works/doesn't work (without adding pre-comps to one workflow or other workarounds), it really depends on the types of layers they are using. In my case, I am making a composition in which I must use multiple Solids in my timeline to which I would like them all to be Track Matte'd to another Solid (that has a custom mask shape that alters over the course of the timeline) and I now know that it just will not work when applying the Set Matte effect to each of the multiple Solids. People might respond "oh just do this or pre-compose that", I have done enough trial and error to know what I will do and will not do as part of my workflow, my process is one I will undertake with many future projects and it kind of sucks to know that Set Matte does not really work like Track Matte with all types of layer combinations. Anyways, this discussion / test results are really for the rest of you out there who would like to pursue new solutions to the Set Matte dilemma. It is always awesome when tricky topics get discussed even deeper than one would expect and finally some decent solutions can come of it. Maybe this small test can prove useful to someone else, and if it does then that would be great. Cheers
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