I have two Vixia HF R400 camcorders I've been using off and on for over a year. Last night I used them and discovered the 1/4-20 threads underneath for the tripod was broken out and I could not attach the camera to my tripod, I had to use gaffers tap...
I contacted Canon tech support and then customer service and because my camcorders are a few months out of warranty, all they could suggest is to send them and get an estimate, which could start at around $150 each. I've seen factory refurbs on eBay ...
As far as I know, the camcorder itself does not stream, you probably would have to add an external device like VideoGeek said, but try reading through the user manual and see if it contains anything; http://gdlp01.c-wss.com/gds/7/0300013657/02/hfr50-...