AutoCast Youtube Live streams?

Hey,
are there any problems with autocast and livestreams on youtube? when i try to load up a live stream in autocast and on my tv (with chromecast) i only get a black screen. the same url/stream used on the pc or everywhere else works like a charm.
i remember it worked before but all of a sudden it didnt anymore. also most of the livestream links change after some time, so you cant put them in a task since the url isnt static. is it possible to use something like a redirect link or a dynamic up/url that redirects to the youtube channel that is live? or more easy, is it possible to use "youtube.com/xxx/live" as a media source? because that link never changes if there is a new live stream on that channel.