We are working with a Nokia N70 phone which is really not cool anymore in Europe but in the US it is absolutely remarkable. We shot some video with its really remarkable for Americans camera and wanted to use it. Being really cool I transferred the video over Bluetooth but the files are not playable in Windows Media nor usable in Flash as they are in the mp4 format, wrapping the gp3 codec.
There are a bunch of conversion utilities that cost money but there is also a tool from the people behind the amazing-but-I-never-really-tried-it Zwei-Stein Video editing application. t@b can do the job of conversion from mp4 to AVI and seems to work admirably. Yay!