Alejandro Pérez provides a script on the AE Enhancers forum with which you can use tracking data to position individual mask vertices: www.adobe.com/go/learn_ae_alejandrotrackmaskvertices.
Scott Squires provides a pair of movies that show how to rotoscope, both painting and masking:
In another of my efforts to ease the pain of rotoscoping, I made a video tutorial for After Effects showing how to use tracking to copy the rotoscoping technique used in Imagineer System's Motor software. It's a technique called Planar tracking, and it's very easy to cheat in AE.No screen name said on Oct 13, 2007 at 3:42 PM :
http://www.simplycg.net/viewtopic.php?t=3554
A good tip to keep in mind when rotoscoping : use command(ctrl on Win)-shift-h to show and hide masks (and other handles).Todd_Kopriva said on Mar 17, 2008 at 9:25 AM :
I find this extremely useful since you cannot change the opacity of the mask, sometimes you need to quickly hide the mask to make sure that you are really close to the edge your are trying to cut. So instead of turning the mask on and off (which can only be done by switching its mode to "none"), you can simply turn its visibility on and off with the above shortcut.
Alex
Sean Kennedy has several good tutorials on his website, including some for rotoscoping in After Effects:
http://www.mackdadd.com/html/visualfx.html
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