My brother gave me an Archos AV500 portable DVR for christmas, and I'm testing it out, seeing what it can do (basically an MP4 player). I'm thinking of watching some movies on the way home though, so I need to know how to extract DVD movies from the disk or an ISO, and, since I suppose it's going to be in an uncompressed format, convert it to AVI or Xvid (I don't think the AV500 plays "exotic" formats such as VOB or such. I was pretty disappointed, but not surprised, when it didn't get Matroska). Any help in this will be appreciated.