I'm trying to Chromecast a video uploaded to Google+, using my Android phone (Sony Xperia Z). I thought this would be pretty straightforward, as video is already on the net, and it seems the Chromecast has a pretty simple way to just be forwarded an URL and playing it. However, no Chromecast symbol appears when clicking the video in the Google+ app. Anyone knows if this functionality exists or not in the Google+ app?
Chromecast support does not currently exist in Google plus.
If you would like to cast the video, try going to G+ in the chrome beta and opening the video in full screen. The chrome beta has support for casting some videos from the browser.
This functionality magically appeared in the google plus app on android last week, so now problem is solved. The Chromecast icon now appears when on the net with a chromecast device.