If you use Google Chrome and love watching YouTube videos, then most likely you are faced with the following problem. When you try to view a video in full screen mode, the video expands to full screen, but the image remains standard (small)! This article will guide you on how to fix this problem.
Steps

Step 1. Open the Google Chrome browser.

2 Enter chrome: // plugins in the address bar. Then press Enter. The Plugins tab opens.

Step 3. Click "Details" (top right)

Step 4. The tab will look like this (see
drawing).

Step 5. Find the entry "Adobe Flash Player"
She is usually the first on the list.

Step 6. Disable the first module in the Adobe Flash Player list
(See figure; if there are multiple plugins in the Adobe Flash Player list, disable them, but leave one plugin enabled.)

Step 7. That's it
The problem of full-screen video playback has been resolved.