So the best way to assure (as much as possible) that linked movies play is to create them using a standard Windows Codec and use the most native Windows format (.wmv). The easiest way to accomplish this, reduce the file size and maintain quality is to have the PFCMedia add-in handle inserting and converting the movie.
One of the surprises is how well it optimizes the video files. Take a look at these before and after file sizes. The .mpeg1 files were supplied by client and the **PFC.wmv files created with PFCMedia, almost a 50% file size reduction and no noticeable quality loss during playback!
Troy @ TLC