I think we should talk about the terms you are using. A cd-rom is a commercially made disk, that is pressed, not burned. The manufacturing process used by large companies is quite different than what we can do with our cd/dvd burners and writeable cd-r’s. The same sort of logic works for dvd-rom disks vs dvd-r disks that we can burn.
Now, is the disk given to you a cd-rom that is commercially made, or is this a cd that your friend has burned?
Commercially made videos on cds are rather unusual these days. For a few years, they were made in VCD or SVCD format, and were much more popular in the Asian markets than in the US.
If we are looking at a disk burned by your friend, it could have lots of different formats on it, as long as it was small enough to fit the 700mb capacity of a cd. We cannot determine from long distance exactly what you have on that cd. My guess would be that you have an avi or mp4 file and photos in a separate file or folder.