YouTube has started to support better quality videos. I’ve been very dissatisfied of the quality for a long time already and the situation wasn’t any better with the latest Metaverse videos.
Anyway, if you add “&fmt=18” to the end of the YouTube video url, you will get a better quality video. This works – of course – if the original video has a better quality and resolution. Unfortunately embedded videos do not support this yet.
Check the examples:
Normal quality:
http://www.youtube.com/watch?v=8zMdIGqy7yg
Better quality:
http://www.youtube.com/watch?v=8zMdIGqy7yg&fmt=18