* if the YT webpage can't be loaded, getting the `sts` requires loading the player JS: this caches it * based on yt-dlp/yt-dlp#13047, thx bashonly
* if the YT webpage can't be loaded, getting the `sts` requires loading the player JS: this caches it * based on yt-dlp/yt-dlp#13047, thx bashonly