What is this icon on the top right of some YouTube videos? It isn't on all videos but it appears on some. No clue what it is.



Example: https://www.youtube.com/watch?v=J4Vq-xHqUo8
It's the logo of the video's uploader. Uploaders can choose to display their logo near the beginning or end of the video, to make it easier for you to subscribe to their channel.