Sorry to jump into this thread to moan about my problems.
Using Firefox on Windows 10, the video posted by cstanton shows a plain black box (with complex source code behind it).
But the one posted later by beacon_dave shows normally as a video and works OK. Similar complex code behind but different.
Many of the videos posted recently are showing as black boxes.
I have cleaned out all cookies and cache (very inconvenient and made no difference - there was about 2Gb to dump so probably a good thing to do anyway).
Any ideas ?
MK