How to access text files, hidden behind 'm3u8' resources

[snippsat]

yt-dlp will get what arte.tv make availble trough there API.
If Web Developer Tools show diffent sub-titlels then you have parse youself which can be difficult.
Diffent videos will have more or less sub-titles available.

(arte_env) G:\1_youtube\arte_env
λ yt-dlp --list-subs --skip-download https://www.arte.tv/en/videos/104026-000-A/the-old-woman-and-the-lake/
[ArteTV] 104026-000-A: Downloading JSON metadata
[ArteTV] 104026-000-A: Downloading m3u8 information
[ArteTV] 104026-000-A: Downloading m3u8 information
[ArteTV] 104026-000-A: Downloading m3u8 information
[ArteTV] 104026-000-A: Downloading m3u8 information
[ArteTV] 104026-000-A: Downloading m3u8 information
[ArteTV] 104026-000-A: Downloading m3u8 information
[ArteTV] 104026-000-A: Downloading m3u8 information
[info] Available subtitles for 104026-000-A:
Language Formats
en       vtt
fr       vtt
de       vtt
es       vtt
pl       vtt
it       vtt