Recently I’ve had a problem when I click on a YouTube video that has been posted on Facebook. The new window opens and the page loads, but the video is black and doesn’t play. If I copy the title (in this case, ’ Something Even You Have Never Seen - Letters of Transit.mov’), paste it into the search bar, and go to the video from Google, I get the same result. If I do a Google search on a different video and play a video from there, it plays. But videos I first try to see from FB often do not play. What’s going on?
I’m running macOS Mojave 10.14.6.