IF your video is in quicktime (m4v,mp4,mov), and yoru video width is 640 and height is 320, then your PowerPress video width setting should be 640 and your PowerPress video height should be 320. Since PowerPress uses the Quicktime <embed> tag (so Quicktime is embedded in the page),you must use a 1:1 or larger ratio for the screen area. To clarify, a width setting of 360 is smaller than your actual video's width of 640. For some reason Quicktime will not play video smaller than its defined width.