Member

Fixes #4485

Unverified... This is based on the assumption that #4485 (comment) is correct.

@Benfor4 @Kagamia
could you please check and verify?

Contributor

There's not always a member only live video so I can't take a E2E test now.
Just verify the new regex pattern in python REPL with the html I saved yesterday and it works like a charm.

I think it is safe to merge if the public live videos are not breaking.

I don't have a members only livestream to test this with but I tested streamlink with a members only video and got the same error.
Added the change and tested again with the same video and it is working now.
Thanks