Are these interlaced frames? Your specific problem may probably be avoided by asking for only even or odd fields if possible. I'm experiencing this with input to my bt878, and I too would like to know at least how to know if the interlaced capture I received with odd:even or even:odd. It seems the driver won't let me capture alternating or successive even/odd, only just odd, just even or interlaced. I want to feed the frames into a motion adaptive de-interlacer and having randomly swapped fields will severely affect the image quality. Admittedly I can't consider this a bug if I'm reading the documentation correctly, but it is a deficiency. ----- Original Message ----- From: "alessandro bonvicini" <a.bonvicini@xxxxxxxxxxx> To: <video4linux-list@xxxxxxxxxx> Cc: <motion@xxxxxxxxxxxx> Sent: Friday, December 20, 2002 11:35 PM Subject: scanline shift down or up Hi all, I take the opportunity to send to all of you my best whishes for a merry christmas and a happy new year. Too , I ask if some has already encontered my problem. I have an averez card with two input that work very well with bttv 0.8.38 and 0.7.100, but sometimes the grabbed image is shifted down or up of a scanline in a totally random way. I use this card with a motion detection program, "motion by jeroeen vreeken" and this behavior trigger often some falses alarm. Is there any way to control this problem/bug/feature? Ans, is there any way to disable the ACG gain control of the card via software? Thank a lot. Alex -- Alessandro Bonvicini - Synervis "L'idea è la moneta del futuro" Seth Godin (Unleashing the ideavirus)
