Comment Re:Why is casting a feature of the app not the OS? (Score 1) 95
I don't always want to cast my whole screen. Chromecast was perfect for this. Don't want my email notifications showing up on the big screen while I'm watching a movie. I can start the cast of the video and then my phone isn't needed anymore. I could turn it completely off if I wanted to and it would keep playing.
As one of the other commenters said, the Cast protocol just kind of gets things started- all the video playback at that point happens on the receiving device.