Interesting - I opened a 2nd window and when on the BBCAN feeds it still goes black after 15 seconds.... 03/12/16 07:50 AM
But I opened the 2nd window and went to the Gran Hermano live feeds and I don't get a black screen after 15 seconds. I have it running in one window while BBCAN is running in another for over 10 minutes now. So it appears it is only a BBCAN issue.
Hopefully this piece of information might help you pinpoint the issue.