Hey ! I was wondering if it would be possible to fetch youtube videos posted in a subreddit (for example : https://www.reddit.com/r/Climbingvids/ ) and automatically add them to a youtube playlist or any other way to watch them on my Android TV. Any clue how this could work ?
Here is one way to watch Reddit videos. Try Hopwatch for Reddit it may work for you if the videos are on a compatible web hosting site. It won't do a playlist like you mentioned.
https://play.google.com/store/apps/details?id=com.ugglynoodle.hopwatch&hl=en