Does this extension for Firefox will make HTML5 videos to work in Windows XP?

https://addons.mozilla.org/en-US/firefox/addon/h264ify/ says "Not available for Firefox 24.9" and same for 24.7.2. Is it really not compatible or it just says it isn't?

As title says. Currently this extension supports YouTube videos. What about to give an option to enable it for other sites, not only a YouTube?

FireFox 123.0.1 (64-bit), the plug-in has stopped functioning recently, and the H264 override in another plug-in (Enhancer for YouTube) also fails. It looks like a back-end YouTube update has borked whatever method both plug-ins used to override the default V9 encoder.

My laptop, while nowhere near bad, always overheats and shuts down while playing YouTube videos specifically unless I crank the fan speed to maximum without the plugin.

Sadly, while this thing is pretty powerful for a laptop, it doesn't properly support the VP8/VP9 video codec and will consistently spike CPU temperatures to the point my laptop automatically shuts down. This isn't a problem with any other video player, online or offline.

My specs are:

CPU: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz 2.20 GHz

RAM: 16 GB DDR5

GPU: NVIDIA GeForce GTX 1050 Ti (12120 MB memory, 4018 MB VRAM, 8102 MB Shared Memory)

gives error for multiple video streams.

i tried it on the following sites:

and its fixed after disabling the extension

firefox is v 111 on ubuntu 22.04. apt version not snap

I opened up the page https://youtube.com/html5 and all options are marked, so I think if this extension still is relevant on Firefox.

The add-on helps with the stuttering on videos, but introduces really loud constant static and weird distorted audio on top of it. I'm on a Raspberry Pi 3 with Ubuntu Mate 16.04, I'm assuming the hardware is at least part of the issue.

Hi there,

When I want to play a music video in the background by refreshing it's tab when it's already open, it pauses after a sec or 5, the current workaround is to press Play on the actual video itself, stay on the tab for 5 sec and then go to another tab.

I hope this can be fixed.
Thanks in advance!

user_pref("media.av1.enabled", false);

1. When vp9 is blocked, youtube plays "AV1" video stream, which is not available in all resolutions:
   
   (Firefox 68, windows)

2. AV1 takes more than twice the amount CPU power to play than VP9.

3. There is not any AV1 hardware acceleration yet on desktop GPU or snapdragon SOC.

Or at least that is what firefox 49 reports when trying to install the extension in a multiprocess-enabled instance. Now that we are in the transition phase towards multiprocess becoming the default, could you look into it? Thanks.

It means it will stop working when FX 56 comes down the pike. Can you look into how to make this a WebExtension? (My educated guess is that the chrome code is a good start).

(Spookingly, this ended up being issue 13).

You may add the possibility of languages, if needed I help you in translate, in portuguese and another languages.

I would like to disable only Vp9 and leave Vp8 active. Is it possible to add an option for this purpose or is there some Firefox config string to modify?

It should be very useful, also a lot of people use Firefox for playing YouTube in background for music, this would allow better efficiency.
I can report bugs on my oneplus one.

I found the option to block 60fps video useful in the Chrome version. It would be wonderful to have it for the firefox version.

So, h264ify doesn't seem to be properly compatible with the Alpha of Waterfox 68. I have the AddOn installed, but YT's stadistics mention that the videos are being played with a VP9 codec instead of AVC1 or whatever.

Could you please consider adding compatibility, @erkserkserks?

Is possible to make it again?
I think was working before.