I tried to watch the 4K test stream for the soccer on the R&D Channel last night (apparently it's working for selected world cup matches). I got it working in the Edge browser intermittently (it looked amazing!), but got a blank screen with audio only via Chrome and Explorer. I assumed this was a codec issue on my Win 10 desktop, but had the same problem on my Win 7 laptop. Is there any way around this? Are there specific codecs that need to be in place for this to work?
I understand that this is a bit of a "beta" test run and that there may not be official support, but am taking my chances nevertheless that there is some support here.