Update!
Since Firefox/Chrome/Safari etc are all limited to 720P for Netflix, I did some extra digging to try and find a solution to getting 1080P or above
with 21:9 support working in Edge and IE and found out that it's actually very easy.
The solution is to use a custom bookmarklet saved in your favs bar or favs menu, and every time you play a movie that's cinema wide, you click that bookmarklet which enables the zoom controls in the browser (Netflix disables them on every video load). Once done, you can use the SHIFT, CTRL and ALT keys to zoom in and out at varying speeds.
The code to use in the bookmarklet URL field is this:
Code:
javascript:(function(){k='data-shv';v=window.document.getElementsByTagName('video')[0];window.onkeydown=function(e){i=(e.key=='Shift'&&0.01||e.key=='Control'&&-0.01);if(i){i=i*(e.altKey?0.1:1);j=parseFloat(v.getAttribute(k));j=(isNaN(j)?1:j);j=j+i;v.setAttribute(k,j);v.style.transform='scale('+j+')'}}})()
The above is super easy in IE11 as all you gotta do is edit an existing bookmark and change the URL, then name is accordingly. I have called mine "Netflix UWA fix".
If you use Edge, then you need to install an additional app as Edge does not let you edit a saved bookmark as MS removed that feature in later updates
The editor to use is
Edge Manage. This lets you view Edge bookmarks and edit them. Once created, the bookmarklet works in exactly the same way.
Now all you have to do to watch Netflix in 1080P or 4K is load it up in Edge or IE11 and when you start a movie, simply click the bookmarklet. My monitor is 3440x1440, so not quite 4K, but I like the IE11 method as it allows the pinned IE11 icon to show the Netflix logo:
The by-product of the JavaScript bookmarklet is that any streaming service in any browser will behave the same way. So 21:9 youtube videos that aren't coded correctly can be zoomed the same way now, so maybe rename the bookrmarklet to "UWA fix"
