Hi I have a camera which uses the PAL_Nc norm this way I can see it with xawtv using the bttv driver. I recompiled my kernel to use the Video4Linux2 API. With the bttv2 driver I can see the picture in xawtv but I see 3 of them mangled.So I think it is because I can select the norm well. The norms that I see is: PAL NTSC SECAM PAL-60 PAL-M PAL-N NTSC-N And this is what I see with my small program too. I have RedHat 7.2 with Kernel 2.4.7-10. I would like to have a frequency value for the color subcarrier so I could add this to the videodev.h file.Should this work? Anybody can help me or with a new videodev.h file? Laci