Yes, that is the problem. I cannot take the URL and pass it to mpv for first link. Second link croaks. Both cases, I am unable to use mpv.
Can you make the first one work? What URL did you get? Pl. share, so I can reverse-engineer at my end. Thanks!
Also, I use the play-with mpv extension on firefox: I think it is the same as the play-withmpv in aur. It does not work on both the streams.