https://sites.google.com/view/klantenservicehelpdesk/blog/hoe-het-zwarte -scherm-van-youtube-video-te-repareren-wanneer-je-dit-problee?

If the problem persists, try closing and reopening your browser. This can also help you to remove the issues from your browser completely. Restart your browser and go back to the YouTube video. Then see if the problem disappears.