Video programs

[Skurge187]

what are some good video editing programs for me to download? Right now I have Animation Shop. It's old, but it's still a very decent program. I can create and even rip from avi's and gifs with it...frame by frame. it's pretty fun sitting there and altering gifs and screwing around with what happens in an avi, or stealing from one avi and adding the footage to another one. but, the avis don't have sound. what program could i use to add sound and change the file format to a more compact mpeg format? If I could get a program that covers all areas from advanced video editing to gif creating I'd have what I've been looking for. What would I use to create flash videos, or to rip from other flash videos and add it to another video? I'm thinking about creating some mindless insanity videos and submitting them to some of the websites like i-mockery and newgrounds.