.. maybe this will help explain After Effects best ...
I do Hand-Drawing for Animation. Sometimes I draw cut-sections ( like Lincoln-Park or the Blues-Clues Dog ) ... with after effects, I can place my animations into my AMV's and make them seem like they are Part Of The Original Series.
This feature, of adding what is previously not real in the series/AMV, is only part of AiST and Adobe Products. As such -- they are Designed to work well with those products.
After Effects is not NOT frame defendant like Editors. It can stretch the time line, ignore the picture-framing size of the AMV ( this makes watching AMV's in full-screen mode look clean and sharp regardless of the Monitor Size you are watching it on ) and even increase the frames per second of ITS work while leaving the original AMV at 23.94 frames per second. After Effects is truly NOT an Editor -- unless your an Animator.
