I use an Ultrawide Monitor. That's a 3440x1440p resolution; 21:9 aspect ratio. I think its currently fine that Mobalytics only supports recordings up to 1080p resolution quality, so I'm not asking for 1440p resolution recordings. I would use recording software if I did.
Sadly, watching my highlights currently results in some funky stuff going on. When I want to review the highlights in detail, I play the videos in full screen so I may see more closely the events of the engagement. If I enter fullscreen on my ultra wide I'm given a lot of unnecessary black space on all sides of the video. The spacing on the left and right of course make the video far more difficult to see what is going on, as the content is made smaller.
The second image, where the video is fully stretched horizontally (and thus correctly maximizing) is with the video set to full screen on another monitor that is 2560x1440p (16:9 ratio).