Hi, sorry for my english... i've made an application that grab image from a bt878 using bttv driver and video4linux on redhat 6.2 (kernel 2.2.14-5.0). I've a problem, there is a small difference from one image to another, when a play continuosly the frame stored on disk the image move up and down a little bit (maybe a row of pixel). Anyone know this problem? thank in advance... Simone Janin