Since CS3 AE is packed with several rotoscoping tools that has significantly made rotoscoping easier. You can use RotoBeizer to simplify repetitve tasks through the reduction of control points. AE also has the ability to import photoshop and illustrator paths as masks. You can also turn channels, including alpha channels into vector-based masks wherein you can quickly create animated mask. The smart interpolation roto feature lets you replicate natural motion by taking control of mask transitions. The only limitation of AE is its inability to view mattes directly unlike in Mocha and Silhouette which is why I am giving it an 8.



