I'm having problems getting the cycling of inputs on a bt878 card working properly. There seem to be 2 problems: (a) After selecting the new input (thru VIDIOCSCHAN) I need to do 3-5x VIDIOCSYNC,VIDOCMCAPTURE to get a stable picture. (b) After VIDIOCSCHAN the image jumps up/down approx 1 line randomly. I can probably detect this and chop the top/bottom lines of the image?? I'm using bttv 0.7.8. Has anyone seen bt878 based cards with external multiplexer onboard for sale?
