downloading youtube videos in 4k

Youtube has recently changed some of its video delivery code, so that online tools like ssyoutube.com etc don't provide videos higher than 360p. Even tools promising free 4k downloads like 4kdownload.com could only provide a 1080p version. Checking if open-source tools can do better - searched for yt dl on github, found https://github.com/ytdl-patched/ytdl-patched which had been updated recently. 

Usage - just needed to give

yt-dlp https://www.youtube.com/suitable-url

 

and it downloaded a 4k version.