Hi, On Thursday 20 September 2007, helico unitemoyenne wrote: > hello, > > i would like to do a two logitech cameras synchronization. The shift > between the frames taken will be as lower as possible. So i saw that we can > use the timestamp field in v4l2_buffer and launch streamon ioctl exactetly > at the same time. As you know , Linux is not a Real Time kernel. So > streamon is not a "now" ioctl. Therefor, this solution is not the best for > my probleme.
UVC provides timestamps in the data packets to help synchronising clocks. However, there is no way I know of to synchronise two (or more) cameras. UVC doesn't provide a mean to start streaming at a given time. Even if it did, differences in clock frequency between the two webcams would result in a slow drift. Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
