I have some questions about DPG videos. 1st: What makes them so different than Mp4 videos? 2nd: When I encode a MP4 video to DPG this is what happenes. Pretend the Mp4 video is 4mb but the DPG video will be 6mb. 3rd: Why is DPG videos more Mb then Mp4? 4th: Can the DS play MP4 since it uses less memory then DPG 5th: And apps that let you whach DPG videos on computer?