I’m writing this post after reading that of @Erik_Davidson
I wanted to answer, but the conversation was closed.
I wanted to warn everyone that to find the video connected to a live (with the new API) just ask the list of user videos and check if in “thumbnail_url” contains the Stream ID.
I know that the process of a foreach is quite long, but I think it’s the only one at the moment.
PS: I apologize for my english