I made a 30-minute video in Premiere and transfered it to Encore. Check project reveals no errors, and the preview looks great. I'm burning a NTSC DVD disk, autoplay, no menu. When I go to play the disk in a DVD player, I get perfect sound, but no video at all. This is my first time using Encore CS4, but I've used previous versions. Windows 7 32-bit user here. Any help would be appreciated.
Some players are finicky, and since it works on a computer, there is some evidence that you have a functional DVD.
Try different media. For example, if you are using a -R, then try a +R, a -RW, or a +RW. Or try a different brand of disks. The player in my car refuses to read RW disks, but my old Sony player does better with the RW.