Trying to get a YouTube video playing on Chromecast, not using the YouTube receiver but simply the iframe YouTube api. When the receiver url is loaded in a desktop chrome browse
Current behavior: it now seems to be fixed with Chromecast firmware 16041 and if the country code is set correctly during Chromecast setup. See the latest comment here https://code.google.com/p/gdata-issues/issues/detail?id=5923
Old answer: Here is the root cause of the issue: https://support.google.com/chromecast/answer/2995235?hl=en Some videos may not play using Chromecast. Private videos, live content, and videos not approved for mobile playback will not work with Chromecast. Hopefully this will change, kills a primary Chromecast use case.