Media Player and .avi video not running

Hi

I've just embeded an .avi file into a web page. This video runs fine when
viewed on my local machine but when uploaded to server and viewed in my browser
I see nothing, not even an error message.

Although the technote states these files are compatible with Media Player does
anybody know Is there a issue with.avi files?.

I've also embeded an .mpeg and it runs perfectly both locally and from the web
server.

I can provide URL if required, any assistance gratefully received.

Mike