Casting videos. My videos used to show a cast icon at the top. It no longer shows this.

[naert1]

My videos used to show a cast icon at the top. It no longer does that. 

[Ashepherdson]

What type of device are you using, and what app to cast videos ? Are you on the same wireless network? Can you reboot your phone, Chromecast, and router, and try again?