Youtube All Questions
Here's how to make YouTube work again when it stops playing videos: refresh the YouTube page and see if the video plays. Try adjusting the video quality by clicking on the settings icon at the bottom of the video. Close your browser and reopen it. Clear your browser’s cache and cookies, and reload the YouTube page.
Here are some things you can try when you see a black screen, or only hear audio, in the YouTube mobile app: Clear the app cache. Restart your device. Delete the app, and reinstall it. Try to view the video using the mobile web player by navigating to youtube.com with a web browser on your phone.