"Well, if he has a video editor, he won't need Photoshop to do that. Resizing is a bad idea anyway unless the downsize is mathematically compatible with the format."

Fair enough. I had just found that Photoshop worked for me when I wanted to downsize some larger images to use in a DVD stream. By using a black background, I was able to resize then cut and repaste, maintaining the original aspect ratio by making it a letterbox format to fit the TV screen. And Photoshop seemed to do a very good job with the resizing even though the original resolution dimensions weren't whole number multipliers of the target dimensions (if that's what you meant by "mathematically compatible"). But I have also had bad outcomes using resizing routines in VirtualDub, QTPro, etc so maybe he is better off doing multiple renders. [Anyway, I hope it works for you operaguy.]