Can't play m38u files

[gartiol]

I have done that. But when I put the URL to the master M3U8 file in the strm file, Jellyfin wont play the best resolution of the movie. And yes, the master M3U8 file contains several resolutions of the same movie.

I have also tried to add the URL to the mp4 file with the best resolution. Jellyfin will play that file. but there is no audio with it...