What are dvdrip-avinn.avi files

I have downloaded some avi movie files that are marked DVDrip-avinn.avi - at the end of the title - they wont play with ms mediaplayer etc, so I was wondering if anyone knows what they are (Torrent perhaps?) if so, how can I view them - I was hoping to make DVD files.

Try VLC media player to play them, or drop them on GSot to find out what format they are. If they are one of the major codecs, FAVC is a good choice for turning them into DVDs.