Sorry, didn't mean to rile anyone up or help to start any wars by trying to defend mkv. I guess mkv support won't matter as much if h264 is never supported by the GP2X. h264 does not generally work too well in avi (it's a sloppy hack) and I don't think it works at all in ogm (I've never seen it before). .mp4 and .mkv containers seem to be the best solutions there. Other than that, I could get by with .avi support using xvid/divx just fine. But I'm sure there are more important things that need to be done before hoping that h264 isn't impossible for the GP2X. I'm predicting this upcoming firmware release to be more of a bugfix/improve existing features than to add more features.