Firefox port of one of the most useful Chrome plugins.

Rating 1 star because this one is abandoned, up-to-date and maintained version here:

https://addons.mozilla.org/en-US/firefox/addon/video-speed-controller-new/

Useful extension and really customizable.

wonderful

Works with Canvas videos for college. Great because those don't have 2x speed or higher, so this fixes that issue. Thanks so much.

Extrem gutes Addon. Sehr einsteigerfreundlich und tolle Extras für Fortgeschrittene! Das Alles auch noch kostenfrei! Sehr zu empfehlen!

no sound is played at under 0.1 speed

3 stars only because of security issues!!!

The blacklist it has now is NOT the way to go! There should be a white list to enabled the extension only on the most common video sites.

It's great, but since today it freezes Youtube playback from the start of the stream

Make your life easier

It works perfectly on porn video website lol