Sorry if this has been covered before, but I had a search on the site and couldn't find anything...

I have a copy of VLC which I want to use to convert MovieMaker AVIs into H.264 and Theora files, but, VLC wont read the MM AVIs!

Does anyone know why?

Whilst I'm here, does anyone know what A&V codecs are used in MM AVIs?

Lastly, is there any other way of converting MM AVIs to H.264 and Theora files?