good softwaer

This is really good add on, for those who want to speedrunning watching anime with 800+ episode xD

Nice addon and highly customizable, would only like to see it remember the speed setting after pausing and resuming again. Same for an option to remember playback speed for a domain.

Best playback speed extension I've found. Very customizable with shortcuts and custom UI.

works with 3rd party and weird online players thanks

Tried a few different extensions for setting video speed on the current page and this is the only one that does everything I want. Click on the toolbar icon, click on the speed you want, done.

As a bonus, you can completely customize the menu and add a button for any particular speed you want. Really convenient.

Please add another 'Big Rewind / Big Fast forward' buttons for 60 seconds steps.

Easily usable and configurable. Works on all sites, not only YT.

Perfeito, funcionou em todos os sites que eu tentei usar.

Лучшее дополнение из всех, которые пробовал. Максимально гибкое в настройках + может ускорять даже в тех плеерах, в которых не ускоряли другие дополнения.

I love how configurable this addon is. Also, the user interface is easy to understand, and fits right in with the look and feel of Firefox. Thanks!

hotkeys are not working when video are on full screen (increase and decrease speed). If you can implement it, it would be super helpful!

Works on WhatsApp for Audio and Video. Excellent. I wonder how to choose a default speed. e.g.: all videos and audio automatically play in speed 2.0