I have the WMVHD movies off the WMVHD web site, and I have a demo sent to me from Pioneer, all are 720p. I have copied them to a DVD-R, and also a DVD+R and tried them in multiple Denon DVD players such as the A1XV, 3910 and 2910. The DVD players load the disc so I can see the directories, but when I come to play them they will not play. I can hear the disc spin up faster and faster, then slows down and speeds up again, but no video will play. Any help appreciated. I have tried them on two panels, Pioneer PRO-920HD and Fujitsu P42HHA40 via HDMI.