> I'm already demultiplexing the 4 channels to achive 4 video streams per > single bttv device. The problems is archieving higher framerates than > 2-3fps per stream by improving the sync speed when switching between > inputs. I'm not asking for 4 channel 25fps capture. I doubt you can get more than 3 fps per stream. You have 25 fps total, which leaves 6 frames per channel. One gets lost per channel switch (the bt848 needs some time to resync). 3 Frames left ... Gerd -- Damn lot people confuse usability and eye-candy.