If you have TV with Built-in Chromecast/Android TV or Nvidia Shield, could you please help check this.
Step 1: Visit https://vimeo.com/327099174 on Chrome Web using PC/Laptop and hit Play
Step 2: Click Chrome Web 3 dots menu on top right then click Cast...(Choose Built-in Chromecast/Android TV)
Step 3: Click Full screen icon on video
Does the video continue playing on PC meaning it only mirrors the video or will it show "Now casting to your TV" as shown here ? / https://plus.google.com/100132233764003563318/posts/bCAFwn7EQGi
On Chromecast Gen1, it will cast the video only as shown on article so you could close the laptop lid and the video still plays on TV. For Mibox, if you click Cast through 3 dots menu then Full screen, it will mirror the video. How about others?
I use web video caster on my phone. Almost all video streaming sites works with it.
https://play.google.com/store/apps/details?id=com.instantbits.cast.webvideo
If you need the same functionality from chrome (desktop), try PlayTo for Chromecast™ extention. Be warned that, I haven't tried this one yet.
https://chrome.google.com/webstore/detail/playto-for-chromecast/jngkenaoceimiimeokpdbmejeonaaami