Burning ISOs and BINs

Hi. Can anyone tell me what the difference between an ISO image file and a .BIN image file is? I’ve got Nero and I’ve got a .BIN file which should contain some video but I’m not quite sure how to use it. I know I need to burn it but which options in Nero should I use?

When I drag a .ISO file into my compilation, Nero launches the image burner. But with a .BIN file, it just seems to want to burn a data CD with that file on it.

Any help would be great. Thanks.