YouTube Cumulative Time Label Extension Purpose: The extension adds a cumulative time label on YouTube video thumbnails in the subscriptions feed page.
Functionality:
It collects the duration of each video in the feed.
It calculates the cumulative time spent watching the videos on that page (i.e., the sum of all video durations).
It then displays this total time as a label next to each video thumbnail, showing the accumulated time for all previous videos on the page.
