Namna this is what I’m dealing with - when I rotate the video (photo number 2) you can see the measurements don’t change and I get a very big background.
The video apps (BS player, VLC) do this scaling automatically and adjust the measurements while maintaining the video quality, and so do other editing programs.
I would imagine this issue to be very simple to solve but I must admit I spent 2 days on it and still no solution. If there are other solutions like locking the Gopro camera so it won’t turn or even rotating the videos on another application (without affecting the quality) I will be happy with that too.