Converting video to HTML5 ogg / ogv and mpg4 [closed]

Does anyone know about any software that can convert video (avi, flv, whatever) to HTML5 supported ogg/ogv and mpeg4 formats?

I tried a few but I couldn't find anything that actually works.

Solution 1:

The Miro video converter does a beautiful job and is drag-n-drop. http://www.mirovideoconverter.com/

BTW it's FREE and also very good for mobile device encoding.

VLC should be able to do this.

For OGG on Windows: Theoraconverter