al free universal audio/video batch transcoder, putting together lots of excellent audio/video codecs and tools from the open source community into an all-in-one solution, capable of transcoding among different audio/video formats with many extra features
A bit more feature powered than Zamzar. With more formats and a bit more complicated interface. However, I can guarantee you that it’s worth the usage. No email needed. 100Mb limit
"This guide provides a step-by-step process to convert a movie into Flash Video, and set up your website to stream the movie directly on a http connection."
"In this article I will explain some of the basics of video encoding and give a step-by-step tour of the new Flash 8 Video Encoder with the On2 VP6 codec."