Greasy Fork is available in English.
change default YouTube video quality to 720p or highest available below 720p. can be used for other video qualities by changing preferredQuality in the code below.
Hey, I added that feature. It now works on embedded videos. Cheers.
Embedded videos
Very nice script. Simple and functional and, unlike other scripts of this kind, it doesn't override FlashStopper. However, it doesn't seem to work on embedded videos. Any chance of adding this feature?