Tracking masks

- [Instructor] As editors,…we sometimes encounter parts of our footage…that need to be affected or obscured.…And we can isolate these areas by using masks.…We previously saw that we could animate masks…and while they are relatively simple…to set up on static images or shots,…animating a mask to move with a piece of footage…can be a bit more cumbersome.…In this movie, we'll take a look at how…to simplify this a bit by tracking a mask.…So, here's a common scenario…you might run into as an editor.…You have a piece of footage that, in the shot,…you've got a logo or something that you can't show,…that you don't have the clearance to show,…and you need to obscure it somehow.…

And so, what a typical workflow for this…might be to blur it or add a mosaic effect to it.…Here, we can do that by adding a mask and tracking it.…So you might do it by hand.…You might think that oh, that's a whole tedious process.…Let's create a mask and track it by hand.…But fortunately, After Effects has a means for us…to be able to do this more or less automatically.…