Libero wrote: > > 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? AFAIK it shouldn't happen, but it sounds like interlace. Above 1/2 maximum height image size bttv gives you an interlaced image of the combined odd/even frames, but below 1/2 size it just gives you one of them. Just from the symptom it sounds as if maybe you're somehow getting alternating odd/even frames, but I don't know if any driver version actually did that. Ben
