I would make a distinction between YouTube videos and a video, the format itself. YouTube videos tend to be even worse than reading when it comes to information

I would make a distinction between YouTube videos and a video, the format itself. YouTube videos tend to be even worse than reading when it comes to information access and retention. Videos, the format, on the other hand have the potential to be significantly more memorable than text, when you consider the fact that a video is a combination of images and audio. I am not familiar with research done on video, but there is a ton of research showing that images help memory considerably (the “picture superiority effect.”) Which is a long way of saying that memory-optimized video content would be very different from YouTube videos.