Hi,

the current experience of the "Popout Player" option is quite bad as it only opens a new browser window with the stream in it. This has the major drawback of NOT being Top-Most and therefore not being what one would expect from a popping out player (borderless, top-most, picture-in-picture mode) like any HTML5 native video player has.

Furthermore this is probably an easy win to implement as generic browser extensions that call this feature (even without you providing the button for it within your custom player) appear to work for the most part. Their main limitation appears that when the tap they're popped out of is switched Twitch sometimes refuses to continue playing the stream or automatically downgrades the quality until switched back.

Furthermore when removing the "div" node using the development console that is overlaying the "video" element*¹ on your website a simple right click on the video is enough to show the "picture-in-picture" option that correctly pops out the player.

*¹: For reference I'm talking about the entire <div class="Layout-sc-1xcs6mc-0 video-player__default-player">-block which follows right after <video playsinline="" webkit-playsinline=""></video> within the <div class="Layout-sc-1xcs6mc-0 video-ref" data-a-target="video-ref">-block so that this block becomes just <div class="Layout-sc-1xcs6mc-0 video-ref" data-a-target="video-ref"><video playsinline="" webkit-playsinline=""></video></div>.