I am not very good at digital stuff and I don't know exactly what the video format is, such as mp4, wmv, avi, and so on. I only know my iPod accepts mp4 video, my windows movie make supports wmv and if you want to upload your videos to youtube.com you have to make it into flv I think. And if you have a Camcorder video I think not many player can play it so just convert them.