Changing Video Format

[Lov3shy]

WMMP (Windows Movie Maker Project) to another video format - how can I do this?

More recently I've been creating 'movies' on Windows Movie Maker - easy for me. However, I want to add them to Facebook (and some on Youtube) but it doesn't let me.

For Facebook, it doesn't recognise the file so I need to change it...but how? If you can, can you tell me a few online video format changing sites (I prefer to do it online than download something for the purpose).

And for Youtube, it says it's processing it and I understand it can be a lengthy process, but a month is too much and I know there's something wrong...possibly the type of file. Same as previous, any online video editing to change its file format?

Thanks