Most comprehensive version of this tool I've found. Great stuff.

Very good extension

It does what exactly it says: accelerating videos. Very good app.

Very straightforward speed controller. Helps me process student videos for projects at a higher rate of speed to make grading processes smoother. Thank you for this add on.

so useful, even can speed up audio (BBC Sounds) and works well with preset speeds

very happy this was ported from Chrome :)

This is a much needed and appropriate port from the best Chrome extension for video controlling. Works great, unfortunately it doesn't seem real that it would work starting from Firefox 48 as described. As I'm using Waterfox (FX 52 ESR equivalent), v0.5.1 is the only one really doing the job (attachShadow problems).

doesn't seem to work for amazon prime video, at least not correctly (doesnt visually show speed change in the extension UI), the speed might change only sometimes when the buttons pressed on amazon prime vid. only site I have issue with

Works very very well, but stops working whenever I use an equalizer addon to filter out some background noises.

Hi, I added this extention to use on my android phone, but it isnt designed for mobile use is it? Can you advise?
Thanks

excellent app

each press of the button expands the video screen into full screen mode, and then the next button decreases it to normal dimension. entirely frustrating and unnecessary.