Can someone explain or point out to me the practical difference between .avi and .wmv formats? i.e. is any one format better than the other? I am making some files recorded from my camcorder to be saved onto my pocket pc phone. Memory is expandable via a mini SD card, so space is not a major constraint yet. I know what fps is and what it does, but can somone help explain terms like video sample size, video data rate, audio bit rate, audio sample size and audio sample rate relative to such formats? I know these are not great formats to begin with, but I love the idea of being able to view videos of my family on my phone. If there are better formats, what are they? BTW, an internet link to explain the practical aspects of what I am asking about is also good, so all help is welcomed and fully appreciated. Many thanks in advance.