It's quite common for certain types of YouTube videos to have the content in some rectangle of the screen with the rest of the screen used as a static border.
I'm looking for some kind of tool, probably an extension for one of the browsers that lets me specify which rectangle I am interested in and magnify that portion to a bigger size.
- The magnification could be to some arbitrary size, to the size of the window/tab, or full screen.
- Chrome is my preferred browser but I'd use any browser to deal with this issue.
- Ideally something for Windows and Mac. Cross platform or one solution per OS.