There are a number of ways to watch a YouTube video in full screen, you can use YouTube’s built-in option, or just double-click on a YouTube video, or several browser add-ons are available for the same. But, want to watch a YouTube video full screen but still want to be able to read the comments and related videos?
With the Chrome extension Smart Video Enlarger, you can do all that. The extension automatically upscale the video area to full window screen and the Intelligent Scrolling option allows you to continue watching the video while reading the comments and related videos.
You can configure it by clicking onto the extension button. However, when using Intelligent Scrolling, the video size turns out to be too small to view.
Interested users can download it from Chrome Web Store