Originally Posted by thetwinparadox:
I noticed that when the app fetches video sizes, mp4 1080p and flv 480p do not show up, and they cannot be downloaded. I'm on version 3.3.1 Can this problem be fixed soon?
Well, no. At YouTube they changed again this part of the page code. The reason why those links don't work any more is because they are based on an "assumption" that you can find them in a given way. They are hidden, and the app compose those links blindly. Now the assumption it's no more valid. So the links point nowhere.
The only solution ATM is to compose audio-only and video-only streams via FFmpeg.
ffmpeg -i audio-only.m4a -i video-only.mp4 -acodec copy -vcodec copy final.mp4