Good day,
Use Quicktime Pro (latest version) from Apple's site.
I have Quicktime Pro - This is about $30 (it's not the player, but the "unlocked" upgrade you buy online).
If you have Quicktime and dowload it, the "export" feature is locked. The $30 upgrade to Pro gives you a key and you can export.
The Export function has lots or formats, even DV AVI at 16:9 or 4:3 customizable. Just open the .MOV file, choose "export" and choose your format!
Hope this helps...