SponsorBlock

SponsorBlock is an open-source browser extension developed by Ajay Ramachandran which automatically skips sponsored segments and other types of disruptive segments within videos on YouTube. It was first publicly released on July 26, 2019. It is available for Google Chrome, Mozilla Firefox, Safari (paid only), and all other Chromium-based browsers. It is not available for the YouTube mobile app, however it will work on certain mobile browsers accessing the YouTube mobile website (m.youtube.com). The extension allows users to report if any sponsored segments (among many other types of skippable segments) in a video exist, and provide timestamps which the extension can remove from the video. A weighted random distribution is used to ensure that user votes get evaluated fairly.https://sponsor.ajay.app/about/
However, the extension does not change the sponsorship in other parts of the video's page such as a pinned comment or the description, and viewers are allowed to rewatch the sponsor segments at the user's own will. There is a color coding section which can indicate what parts of the videos are sponsors, self-promotion, etc., and there are over 1.3 million active users of the extension.https://sponsor.ajay.app/stats/
Some of the other categories that the extension classifies are Unpaid/Self Promotion, Interaction Reminder (Subscribe), Intermission/Intro Animation, Endcards/Credits, Preview/Recap, Music: Non-Music Section, and Highlight,https://wiki.sponsor.ajay.app/w/Segment_Categories and there are rules and examples for each category's definition. Linus Tech Tips had a short segment which mentioned SponserBlock where he mentioned his point of view of the extensionhttps://www.youtube.com/watch?v=4YIkw7vBGyk&t=3779s which included the channel owner being able to guess where people would skip part of a video, and some other YouTubers have mentioned the extension before.https://www.youtube.com/watch?v=38dWa26l_ichttps://youtu.be/N66CmWhgrO4?t=72 There is also settings to change in the extension to view the various categories on the timeline along with changing the colors of the various categories that is represented in the timeline itself along with other various settings. SponserBlock is open-source and available on GitHub.https://github.com/ajayyy/SponsorBlock
Ajay has also created "DeArrow", another extension intended to replace Clickbait titles and thumbnails.https://dearrow.ajay.app/
==References==
Category:History of YouTube