I'm not mad just giving my review.
I can't get this app to work on Firefox nightly for andriod on my 20:9 andriod phone and the phone is a samsung galaxy a53 5g and my phone is the only I am using this app for my phone do to the fact that it is 20:9. I have a samsung galaxy tab s5e and a windows 11 hp pavilion laptop.

Great extension. works exactly like it should.
Even in Plex! :)
But i have 1 issue. the shortcut (CTRL + ALT + C) doesn't cycle through the experimental modes, which is the one i need for the video to run properly in 21:9. i have to manually click in the menu, which sucks a bit :/

(an option to choose which ones it cycles through would be nice....
"normal", "experimental", "both" )

Anyways, apart from that, it works perfectly.
Thank you.

Ctrl+alc+c keyboard shortcut doesn't work.

The only extension which works without flaws on Steam Videos (especially if content has more than one video the other plugins fail to scale them accordingly to screen size).
Thanks for that !

Sadly we lack easy controls, automatic border detection and site-specific configurations.

Great solution that works for me. The other ultra wide video add ons crop into the video and you you don't get the full image but this one does a good job of leaving the entire video visible and fitted for ultra wides.

Only note is that for me the aspect ratio and crop buttons on the top don't do anything, I have to press the force crop or force perspective buttons to get the add on to function.
I am using Firefox Quantum.