Hi, At the hardware level, the bt878 has a register which says whether or not there is a video signal on the input (bit BT848_DSTATUS_PRES in the dstat register), but I don't think this is available in user space. Alan On Tue, 09 Apr 2002 16:46:46 +0300 Marilen Corciovei <len@xxxxxxxxx> wrote: > Hi, i'm new to this list and want to ask what it might be seem to as a > dumm question. > Is there any way to detect a "no signal" on a bttv card? I'm using > VIDIOCMCAPTURE-...SYNC ops to capture data from my bttv card and it > works fine except when there is no cam i still capture blue images. > Any sugestions? > Len > > > > _______________________________________________ > Video4linux-list mailing list > Video4linux-list@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/video4linux-list >
