Image files can be made using virtually anything…videos, pictures, data, etc. If the image files are made from a dvd video, you can burn straight to a disk and have it play on a dvd player. But that is a great big IF.
VLC media player can play ISO image files of dvd-video directly. So you might test them in that first.
If they are not dvd-video, but some other type of video format, you can mount the image in a virtual drive, then convert to dvd. Nero Vision can do this conversion, but I don’t like using Nero for this. You won’t get the best quality output. But it is simple to use.