Hi,Vikas
Thank you for answering my question. The camera is not in use by other
applications but only chrome. I also have version 19.0.1054.0 canary.
In fact, I have seen the video but just a second and then turn out to
be black screen in the whole brower. And the camera is in use all the
time during black screen time. So I think maybe webrtc is ok, but the
canary doesn't support html 5 very well?
Thanks,
mingzhu chen