Displays the sum of the lengths of the remaining videos in a playlist
Note: only sums the lengths of videos that are visible in the playlist sidebar -- may not be accurate for large playlists (the user is informed of this; see image 2).
The time remaining is by default shown through both a duration and a percentage. The variables showTime and showPercentage can be set to false if you only want to see one of these.
Options:
Compatible with https://greasyfork.org/en/scripts/404986-play-youtube-playlist-in-reverse-order