I am desperately looking for an extension that takes over godawful js video players and gives something standard. Some have click to pause, some forward backward, all don't have volume control.
Might not be exactly what you are looking for but I use an extenstion [0] to open videos in an external video player (mpv). That way the controls are consistend and playback does not depend on where I browse.
mpv uses youtube-dl (or yt-dlp) to fetch the stream URLs and that supports many sites.
mpv uses youtube-dl (or yt-dlp) to fetch the stream URLs and that supports many sites.
[0] https://addons.mozilla.org/de/firefox/addon/send-to-mpv-play...