Hi, i,ve been using the trial version of Ulead Movie Factory 6 to convert my wmv, mpeg and avi hd video files and burn them as HD DVD's onto normal single and duel layer dvd's, it's been working great with most files but i can't control the burning speed with Ulead'S Movie Factory. If i try and burn the HD dvd output Files using Imgburn and try them in my HD dvd player it comes up with a message, not a dvd format etc, if i create an ISO image from the same conversion Imgburn will burn it ok and it will play fine. Have tried changing book type etc, use UDF 2.5, the files burn ok but won't play as mentioned above, i need to find a solution or why this happens for future burning etc, could it be the files aren't in the right root directory, thanks.