Yup looks like a codec. I'm using Movie Maker to convert my mpg to wmv files and I select the I want a 100MB file. Trouble is, this creates a movie in media player 9 codec, but I only have 8 on the player with no upgrade available that I can see.

How can I tell movie maker not to use this codec? I can select best file for pocket pc, and THIS plays as it uses 7.1 codec, but the quality is very poor (200kbps).

Any ideas?