So, this is for personal use, for home automation reasons mostly, been looking all over to try and find a way to do this, I just want to link to either the channels upload playlist, or to the newest video upload, so far this is what I have working:

"curl -X POST http://10.0.0.171:8060/launch/837?conte ... =video/mp4"

This will link to that specific video and play it just fine, as you can see I can use a videos content ID and a mediatype of video/mp4, but here is a playlist url (linustechtips):

"https://www.youtube.com/watch?v=f1j_hlNLPcs&list=UUXuqSBlHAE6Xw-yeJA0Tunw"

notice how it has a video content id and a list variable, not certain if I need a different media type,or if this is just not possible....

Also while on the discussion, is there a way to change videos/channels without reloading the entire app?