This is THE ONLY add-on that's preventing me from switching to Firefox from Chrome , very disappointing results on YouTube, does not actually do anything.

It really does what it says. Keep up the great work, buddy.

The best extension for weak computers that can not support video in 60fps!

<3

Doesn't really work. It's always avc codec, no matter what setting is set in h264ify, and when opening new youtube tabs 60fps isn't blocked.
Please fix?
UPDATE: Hmm, sometimes it works but not all of the time? Surely this needs some fixing. 4 out of 5 until then :)

Good app. Its working i am satisfied.

bien

На жаль, не працює як треба. Потік то стає H264, але FireFox не використовую при цьому апаратного прискорення відео.

I don't even use this addon for the h264 aspect, just the fact that it can block 60fps videos (forcing 30fps) to prevent stuttering. Good job

The developer had the good foresight to listen to Mozilla and update their add-on, before the final release of Firefox 57. As a result, it is completely compatible.

This add-on also makes browsing and streaming videos even faster.

Funciona perfeitamente!!!

I tried testing it on youtubes test page & it never acknowledged h264 so a useless add on it seems.