A simple user script that automatically hides the progress bar and icons in YouTube videos and reveals them once you hover your mouse where they would be (similar to the "Automatically Hide Taskbar" feature in Windows).
I made this script because I was annoyed that the progress bar would always block a part of the video while it's paused, and sometimes take an awkwardly long time to disappear when the video is unpaused.
If you want this script to override YouTube's own auto-hide system while the video is playing (as opposed to only while it's paused), you'll need to set the variable onlyOnPause to false in line 16 of the code. This is also documented in the code itself.
How it works:
First, it sets the opacity of the video player elements (progress bar and buttons) to 0, disables their pointer events and creates an invisible div at the bottom of the video where these elements would be.
If the mouse hovers over the div, the script resets the opacity of the elements back to 1 and enables their pointer events. It will also move the div above the progress bar.
Now, if the mouse hovers over the div again, it means that the mouse is no longer near the video player elements - the elements will be hidden again and the div moves back to the bottom of the video.
