getbest() issue

[LandStander27]

Whenever I call getbest() it returns normal:mp4@1280x720, and when I print out vid.allstreams the highest normal quality is mp4:1280x720. But when I go to the actual video on youtube the highest quality is 1080p/1920x1080, even when I call getbestvideo it returns 1920x1080. So how can I get normal:mp4@1920x1080?

[LandStander27]

Or how can I combine the highest audio file with the highest video file like YouTube does? I have found out a way with moviepy but then it rerenders out the whole video and takes "forever".