Hi all--

How is audio + video sync from usb camera guaranteed?

We are using a Pixart camera with Linux 2.6.33 UVC driver and V4L2 + ALSA. 

Sometimes the video stream from V4L2 is late coming in compared to audio stream 
from ALSA, with timestamps later by ~150 msec or more.

Are there examples for communicating with UVC driver directly without V4L?

--Dave Milici

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