To loop a YouTube video on a computer, follow these steps: Open the YouTube video that you want to loop in your web browser. Right-click anywhere on the video screen and select ""Loop"" from the options menu. Alternatively, you can right-click on the video and select ""Loop Video"" from the options menu. The video will now play in a continuous loop until you manually stop it. If you want to turn off the loop feature, simply right-click on the video screen again and uncheck the ""Loop"" option. If the ""Loop"" option is not available, you can also use a browser extension or add-on to enable looping. For example, the ""Looper for YouTube"" extension allows you to loop videos on YouTube by simply clicking on the loop button. By following these steps, you can easily loop a YouTube video on your computer and enjoy seamless playback of your favorite videos."