Hello all, I am now customizing bttv v4l1 driver for my custom needs and have a problem distinguishing odd and even fields. I can not trust bt8x8 flags because of switching cameras that I do after each frame with a custom multiplexer. As I learned from Justin, the halfline of "almost" black pixels is being placed by camera (not bt) to mark odd or even field (don't remember which exactly). Because I do camera switch, I cannot allow both odd and even fields to appear for the same camera (it's 288 in height, thus only one field required), otherwise it will jump one pixel lower or higher (odd and even fields). back to the problem I should distinguish odd and even fields without using bt flags. The black line placed by camera is a problematic solution becuase the camera might work in darkness that will cause all fields to seem of the same parity. Nevertheless bt distinguishes them someway even in darkness, what else symptom I might get about parity of the field? thank you in advance, Michael Zayats
