This add-on fixed my problem with YouTube immediately, I have a high end PC and it was freezing itself at 2x 1080p60. Thank you guys!

Not working anymore - I still have av1.

A must have for old laptops with no VP9 hardware decoding support. Just make sure that you can only watch videos up to 1080p.

Great improvement, in terms of keeping my laptop much cooler. Great extension. 👍

Finally videos don't get pale in full screen. Thanks you!

Installing this fixed hardware video decoding. Now Firefox uses much less CPU even when I watch 4K videos with VP9. Task manager shows HW video decoding works. It was zero before.

Still seems to work, finally no more choppy and painfully slow and in low resulution loading YouTube videos in Firefox, and no need to use YouTube in Chrome as a "workaround".

Currently seems to not be working as blocking VP8/VP9 means videos are played in AV1. Even when AV1 playback is technically disabled in Youtube settings.
For me this is overall worse as AV1 seems to use more resources than VP9.

I've used this add-on for years, but eventually I realized that as of 2024 this is what's blocking Youtube from playing any videos above 1080p. I don't know why, but no video on Youtube will show the option of playing above 1080p when this extension is enabled and plenty of videos allow up to 2160p when this extension is disabled.

Ahora me van los videos fluidos gracias a esto Bv

Correctly installed/setup, but failed to work in multiple instances

I just discovered this after my other extension to block 60fps on youtube stopped working. This works flawlessly thank youuuu

only need one word *amazing

h264ify is a must-have for smooth video streaming. It's like a magic wand for your browser. No more buffering or lag – it just works. Love it!

Ohh nooo. If you want them to see everything you do in your browser, including user name and password for Where ever you are are. Go right ahead and install this.