Someone should invent a browser plugin that identifies unavailable YouTube videos and redirects to an available one (if there is one, then on YouTube itself). The thing is, when a video is unavailable, a user can’t even search by keywords, because they are missing (see screenshot). But they were there when it was still accessible. More often than not, the video can be found on the same YouTube site using the same keywords.
Hi, I'm Rauf Aliev. 