mpv: Cannot open file '': No such file or directory

[h-banii]

mpv gives this warning when there are no audio tracks and/or no subtitles. (ex: "allanime: citrus")

[file] Cannot open file '': No such file or directory
Failed to open .
Can not open external file .
[file] Cannot open file '': No such file or directory
Failed to open .
Can not open external file .

This happens because the --audio-files and --sub-files options are empty mpv --audio-files= --sub-files=, so it says it can't open the file "" (empty).

The options above are added only when audio_tracks and subtitles are not None, but it does not take into consideration the case when it's an empty list [].

A possible solution would be

- if audio_tracks is not None:
+ if audio_tracks: