Firefox has a setting that prevents images from being animated (in about:config):
image.animation_mode set to none
(The gifs are still loaded and present as static images. Video files pretending to be gifs are not dealt with.)
(The gifs are still loaded and present as static images. Video files pretending to be gifs are not dealt with.)
For that you need:
media.autoplay.enabled
You will have to pause/unpause youtube videos to get them to play.
Biggest issue is that I can't figure out how to play videos with ads on youtube since ads don't have a pause button. (I just play them in VLC instead.)