From the course: After Effects CS5 Essential Training

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Compositing with blend modes

Compositing with blend modes

Another way to combine elements is by using blend modes. Blend modes allow two layers to interact in kind of unique and different ways. We've all seen opacity and we notice how that allows layers to kind of interact in a certain way and blend modes kind of take things to the next level. They are very useful, not just in compositing as we'll talk about also in this movie. And basically, what we're going to do is we're going to be taking two pieces of footage. Here I have like this photo I took by my neighborhood and it's kind of like this quaint little snowy day, and then there's also this footage, which is from detonationfilms.com, which is kind of like this homegrown stock video library online that just sells and even gives away a lot of these really cool effect shots. So, there are basically some clouds here against a white background. And what we're going to do is we're going to take this and essentially make this composite with those two elements together. I added color effects…

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