Hi I writed a Tv-play program based on bttv-0.8.46.but when I watching TV in Linux, because of interlace effect,when the object were to traverse horizonally accross the screen a distorted motion occurs.I have tried xawtv, it is the same. I'm not sure if the bttv driver can resovle the problem or I must use some deinterlace algorithm to resovle it. tomasy.yang