2 Replies Latest reply on Jul 2, 2009 11:36 AM by Rick Gerard

    moving masks?


      Is there a way of making a mask move in a video? Im using AE CS3 and I need tha mask to move while the subject is moving, much like what is use during a composite video(which is what im making).

        • 1. Re: moving masks?
          Brad 902 Level 1

          If your question is as simple as I understood it...


          All you have to do it hit MM, then click on the stopwatch for 'Mask Path'. Move along in the time line, and move the mask with the 'convert vertex' tool. And you have a keyframed mask!


          For more info: http://www.eventdv.net/Articles/News/Feature/Tutorial-Creating-Masks-in-Adobe-After-Effect s-37815.htm


          Hope this helps.

          • 2. Re: moving masks?
            Rick Gerard Adobe Community Professional & MVP

            By asking if you can move a mask while a subject moves it sounds like you might be describing rotoscoping. The process of animating a mask to isolate a subject from the background.


            If that's what you want, follow the suggestions given above. M to reveal the mask properties, click on the stopwatch, and then move the verticies.


            If you would like to look at the best tutorials I've ever seen on masking I'd take a look at Scott Squires Roto part 1 and Roto part 2 videos. He's using Commotion (which I still have installed on an older windows machine because it's about the best roto tool out there) but the procedure is the same in AE. You figure out what is the easiest to cut out, Cut out a bunch of pieces to make the entire roto, then animate the pieces.


            Good luck.


            BTW, the links to the videos on Scott Squire's Effects Corner site are the Titles of each section. It's easy to miss the videos. Part 1 is theory, Part 2 is execution.