The Xbox 360 isn’t known for its wide range of codecs. The list is rather small, and it gets even smaller when you want to run in HD. DivX, the most popular codec, will play in HD on the 360, but will skip frames often, making it almost unwatchable. After digging for something that encoded properly, was free, and was easy to use we stumbled across EncodeHD. It’s quite literally the easiest tool to re-encode your collection so it’ll play on your 360. It can batch convert as well, meaning that all those digital copies you’ve acquired with your Blu-Ray/DVD combo discs (by the way, who needs all three of those?) can be converted all in one go. You can find a great guide for this virus free, cost free software at Afterdawn.