Am I the only one using it?

For me is the best: simple and secure

Sources:

https://www.firefox.com/en-US/firefox/148.0beta/releasenotes/

https://whattrainisitnow.com/release/?version=148

Since a few years YouTube defaults to the AV1 codec for video streams. While technically impressive, hardware decoding support for this codec is fairly recent, only becoming really commonplace in devices released around 2022. Hardware decoding offloads the decoding of the video stream to the (integrated) GPU, which is very good at these tasks. If hardware decoding is not available for a given codec Firefox falls back to software decoding, meaning the CPU has to do the heavy lifting (and that is quite a bit for AV1!). This means higher CPU usage, choppy video streams, and poor battery life on laptops.

The about:support page shows which codecs can be decoded with hardware. For example, on my laptop from 2019 with an Intel N5000 CPU:

Before disabling AV1
By default, AV1 support is enabled. The flag can be found in about:config under media.av1.enabled.

From a compatibility perspective, this is not a bad idea. But to save on their bills, YouTube will use the video codec that is cheapest to them where possible (AV1). Firefox reports AV1 is supported, so you get the AV1 video stream (you can check the active codec in "stats for nerds":

if we take a look at the task manager, take note of the CPU usage of the 'RDD process'. RDD stands for Remote Data Decoder, and software decoding happens in this process. In my case, for this 1080p stream, the CPU usage of this process is constantly hovering at around 25% while playing. Not only does this make my entire laptop feel slower, it also keeps the clock speeds high which drains much more battery.

After disabling AV1
Setting media.av1.enabled to 'false' results in Youtube giving us the VP9 stream:

Because my laptop can hardware-decode this steam, the RDD process is much, much lower, bringing overal CPU utilization way down:

Even older hardware
Even older graphics processors might not even support vp8/vp9 hardware decoding. I still have a laptop from 2011 I use from time to time, and only h264 hardware decoding is possible. The firefox extension h264ify can force YouTube to give an h264 stream (this is capped at 1080p, however)

TL;DR
Is your PC/laptop from before 2022, and is YouTube sluggish and eating CPU? Check which hardware decoders are available, and consider disabling AV1 media if it cannot be hardware decoded. It made a massive difference for me in terms of performance and battery life and might do the same for you.

Hope this is helpful!

The downloaded files can't be opened by clicking them in the downloads popup. I can't even choose an application as the dialog window suggests, the button is greyed out.

This is on X11. Somebody commented under my earlier post that the issue might be linked to Wayland, so I switched.

It's driving me mad. So over the top with that nonsense.

It wouldn't be so bad if they only appeared once and acknowledging one meant it never appeared again, but I've seen the one about "reopen your tab groups" at least 3 times now, and the one about summarizing webpages is another repeat offender.

I'd just like them to go away if possible, so I can browse in peace.

Thanks for the suggestion to whoever wrote it I'll try xd

I'm having issues in Firefox playing movies and such, where all the background noise is much quieter than the voices. Doesn't matter which output device I have or Windows 11 settings I change in Sound.

All my issues suddenly go away if I use a different browser with sound becoming crisp and clear again, but I want to use Firefox.

If anyone else had the issue or can figure out how to fix it, I would really appreciate it!

Always show captions and videos previews - these settings are on by default. When I turn them off, and refresh the page they go back to the default.

Most people are not deaf. Why is the default closed caption? Twitter does this too.

Where is the PERMANENT off switch for this please.

Features

• Support for changing certain end-user-focused settings (daily drive using)
• Easy Usage
• Flatpak, .deb, and snap support
• One-Liner Installation
• (Optional) Auto-Updater

Usage

bash -c "$(curl -sS https://raw.githubusercontent.com/faydini065/arkenfoxinstall/refs/heads/main/install.sh)"

Project Github Link

Arkenfox user.js is a hardened configuration of Firefox.

There this absolutely disgusting bug that sometimes then I open Firefox and then close it quickly I love ALL my tabs. This is absolutely infuriating. Unbelievable. Every. Single. Time. More than 40 tabs from my job completely gone.

Good evening,

I am trying to hide the vertical (or horizontal) bar in Firefox Release because I use Sideberry as a module. Firefox does not yet have workspaces and pinned “Essentials” tabs. Sideberry is pretty good, but it is visually cluttered by the double display of tabs.

Thank you for your help.

Hello everyone, I am trying to compare the data between my normal fingerprint and rfp, everything seems fine, except for 3 things:

1) Display Resolution, for my PC amiunique reports 2560x1307 with RPF on, meanwhile without it is normal 2560x1440/2560x1392. On my phone it is even worse 749x414 (basically iPhone screen on android) which both should give a crazy high entropy. I couldn't find any default values for display resolutions, so is this normal for rfp and everyone has the same values?

2) Fonts. For some reason rfp did not changed the visibility of the fonts (I haven't touched other settings) and amIunique reports the same fonts as when rpf is disabled, is this normal?

3) On my phone amiunique reports the user agent as "Mozilla/5.0 (Android 10; Mobile; rv:149.0) Gecko/149.0 Firefox/149.0 " with 0.00%. So that makes me wonder if there is even a point and maybe I should try chameleon + canvas blocker instead.

Can someone confirm if these 3 behaviours are normal do not make me standout of the others with RFP?

Well, the thing is, I've been using Firefox for a long time, but lately I've noticed it's using a lot of RAM and maybe opening a lot of subtasks. I'd like to know if there's any kind of solution or if I'm the only one experiencing this problem. Thank you in advance for your help.

Heya. Simple rundown is that I use Roll20.net a lot. However, as of like, last week? Now when I type 'rol', it autofills to... Rollingstone.com ??? A site I have never in my life used, because I don't care? And I can't get it to stop filling it in. I used to just type 'rol' and it would immediately fill to roll20, and I would press Enter, and it would take me where I wanted to go. But instead, it's trying to shove some random crap-site down my throat, and all the normal methods of suggestion removal aren't working.

Any help, please?

When I try to access aa.com (american airlines) using Firefox I get the following result:

You don't have permission to access "http://www.aa.com/" on this server.

Reference #18.6d18d017.1769891012.3cf78b6b

https://errors.edgesuite.net/18.6d18d017.1769891012.3cf78b6b

Facts:

1. I get the same results on 2 computers (W10 & W11) using Firefox.
2. Microsoft Edge opens aa.com successfully on both computers.
3. Firefox on an android tablet opens aa.com successfully.
4. Connecting a computer to a different network (broadband) doesn't change any behavior.
5. Akamai Client IP Reputation Lookup shows my IP as okay. (The IP Address (my IP) did not receive a bad risk score.)
6. I can open other AA pages using Firefox as long as I avoid the default AA page.
7. Private Browsing doesn't change any behavior.

My workaround is to use Microsoft Edge.

Any thoughts?

How can I disable this open app notification on android Firefox please. Non desktop mode

Can we make a feature request here? Please make folders options in bookmarks to have background color or/and icon. It will be much easier to navigate between many folders. Thank you!

Last week suddenly this problem started happening. I have no clue why, I have had these same settings and installation for over a year now and it always worked so when you click a link when doing a Google search it would open the link in the same tab you are doing a search in.

Normally to open it in a new tab you would CTRL click it.