Firefox Community Forum

This issue just appeared. Video will not play in Firefox. Windows10 PC, up to date with latest versions, as is Firefox. There is no error message or code. Just the spinning wheel. I see other people are having the same issue but I haven't seen a solution. Any ideas or help appreciated.

Internet page is having issues, I try to open my email account, mu Norton password account, my bank all keeps timing out wont let me use google, I cant use your webpage, tried to sign it it wont let me, 2 tries change password it states im locked out, what is going on

Problem with video playback; after a while/randomly, Firefox crashes, slows down the laptop and video is displayed as shown in the attached image. Laptop model: Thinkpad T16 Gen 3, CPU: Intel Core Ultra 7 165U with Intel graphics. Firefox version on windows 11: 134.02 (64bit).

I use the IRS form filler to pay my taxes...have for years with Firefox browser. This year (for 2024 return) when I sign into the site the 1040 form does not display correctly. the boxes are to the right and below the actual placement. I emailed IRS who said it is a setting in Firefox. I tried the site using Microsoft EDGE and it displays correctly. I have searched for possible solutions and tried them all like using/on and off excelerator, letting Firefox chose size and colors of sites, turned off Noton etc. I posted another question here but no replies or looks so maybe I did something wrong so I will try to post again. I have W10 fully updated and Firefox too up to date. I understand I could use Edge but never had to and prefer to use Firefox as I have before. any suggestions would be appreciated or where I can report a possible issue with Firefox. I have attached a sample. thank You

For the last several days I've been having a problem with general slowness when accessing various bookmarks and/or searching in the address bar. I've disabled various extensions which I really didn't us a lot and the cache is kept clean. It also seems to using a lot of memory. Task manager was showing approx 750mb. I don't know if this amount is typical or not. I've tried a safe boot and it really didn't change anything. I would also mention that I'm not having these issues in either Chrome or Edge. I tried doing reinstall-not a clean one, but it really change anything. Any suggestions on how to proceed? Thanks

Hi everyone,

About a month ago, I began experiencing issues with video playback. When I visit websites with videos (such as YouTube, news sites, etc), the videos often start flickering, as shown in the screenshot. This flickering is accompanied by significant lag, which only stops if I scroll away from the video or navigate off the page.

I’ve noticed that disabling hardware acceleration in Firefox fixes the flickering issue, but it introduces bad screen tearing, which is also annoying. I’d prefer to keep hardware acceleration enabled to avoid tearing, but the flickering and lag make it unusable in its current state.

Has anyone else encountered this issue? If so, are there any known fixes or settings I can adjust to resolve the flickering while keeping hardware acceleration enabled?

Here’s what I’ve tried so far:

Updated Firefox to the latest version.

Updated my graphics drivers.

Cleared cache and cookies.

Home screen shows: Error: Platform version '130.0.1' is not compatible with minVersion >=130.0 maxVersion <=130.0

My account indicates I am up to date with version 134.0.2 (64bit)

In addition, today all tabs are broken

I have tried everything I can think of or find on the internet about changing fonts on FireFox. My bookmarks and titles are very large and I can't get them down at all. I've tried all the suggested way on the internet by changes the fonts in settings/General but it doesn't change the font in Bookmarks. Help, I'm loosing a lot of real estate on my browser

secure.chase.com has been broken for some time. The site works with other browsers on the same MacBook Pro (2017) under Monterey Does not work in Firefox, even in "troubleshooting" mode with all plugins disabled.

Please help

Thanks, Walt

I'm looking to change all the fonts on my Firefox webpages and menus to Lexend. How would I do this? I've changed the majority of it in Settings > General > Language and Appearance > Fonts, but I'm looking to change the font in my search bar, on my tabs, and other menus like the Extensions popup.

It would be really helpful if all these settings were in once place, as well!

Vert Scroll bar , right hand side are too narrow and need to be widened. Where is the setting to achieve this? FF scroll bar does not follow windows defaults either.

A post similar prev, has been archived -not viewable & reports to ask new question.

Thanks =============================================ANSWER: After researching - by add ons scroll bars: Custom Scrollbars link in extension- Options for wide-? explains this and work a round. Fault of the short sighted W3C ! https://github.com/WesleyBranton/Custom-Scrollbar/wiki/How-to-enable-wide-scrollbars-on-Firefox

also see https://github.com/WesleyBranton/Custom-Scrollbar/wiki/What-is-the-platform-default-width

for why.

Question self answered

Running MAC Ventura 13.7.3 See Attached. All language choices are set to US English, unless there is a double secret location. It's been going on for months, over various versions of Firefox and ventura. They usually only come up when I first load Firefox, and they acn come up on different pages. How do I stop this annoyance? I've cleared cookies and that did no good Thanks

For the last day I've been having a problem with FF slow to load. I've tried the troubleshoot mode with little change. When it does load I can have problems with certain web sites loading e.g. Youtube, MSNBC, AOL mail etc. It's never consistent. The cache is clean and I've saved all the relevant cookies, I checked my internet provider and they are having no problems and I don't seem to be having any internal hdw issues e.g. ethernet cable connections etc. I reinstalled FF-not a clean install and seemed to help for a time. Do I have any options other than a refresh? I don't seem to be having the same issues with Edge or Chrome. All W11 updates are current. I look forward to anyone's comments.

updated and uBlock off, when i click and drag down, I can't go below the taskbar like I can on my phone (and used to be able to on my pc. Also, no matter what deviations of directing my downloads, whether I specify target or 'always prompt' ALL downloads go to Documents or Temp files. Then I have to cut and paste correct location. Reported THIS several times to no resolution. Tired of backing up and reinstalling FF over and over! Thanks

I've recently done a clean reinstall of Windows 11 and have noticed that, only for Firefox (134.0.2, build ID 20250120135430), a few videos playback without any audio, yet the same videos play with audio when using edge as a comparison. Most (if not all) of these videos did play with audio in Firefox prior to this reinstall.

Firstly, I'm pretty sure this is not a windows sound mixer issue since many videos on the same page and tab play back with audio just fine in Firefox. The same goes for it not relating to the Firefox setting 'Speaker selection', under (burger) > settings > privacy & security > Permissions because videos of different formats (or using different players) on the same page play back audio fine. The tab is not muted. Again, some videos on the same browser tab play audio fine; some of a particular format or player only play the video, while missing the audio (and where Edge plays the same video with audio).

Another common and potentially relevant issue I've seen is that, this being a 'Windows 11 N" install, it was initially missing the settings > system > optional features > Media feature pack, but that is now something I've successfully added. I should add that windows did report problems when I initially tried to add the media feature pack but, after a very long delay, it eventually appeared to succeed when I ran a couple of DISM incantations that I think ended with - "dism /online /add-capability /capabilityname:Media.MediaFeaturePack~~~~0.0.1.0"

I have the 'Play DRM-controlled content' setting enabled.

Comparing the Firefox vs Edge video playback on this video test page - https://tools.woolyss.com/html5-audio-video-tester/ I get the following results (don't know how to get it formatted/aligned correctly, sorry) -

                           FF vid    FF audio    Edge vid    Edge audio
av1-opus-sita.webm          Works     Works       Works       Works
vp9-vorbis-spring.webm      Works     Works       Works       Works
vp8-vorbis-sintel.webm      Works     Works       Works       Works
avc-aac-nerdist-friends.mp4 Works     MISSING     Works       Works
avc-aac-big-buck-bunny.m4v  Works     MISSING     Works       Works
avc-mp3-sita.mov            Works     Works       Works       Works

And perhaps also relevant is that there's also a difference in the audio-only samples further down the table on the same page -

                   FF audio   Edge audio
audio-sample.mp3    Works      Works
audio-sample.weba   Works      Works
audio-sample.ogg    Works      Works
audio-sample.opus   Works      Works
audio-sample.flac   Works      Works
audio-sample.wav    Works      Works
audio-sample.m4a    FAILS      Works
ac192.mp3           Works      Works
spoonradio-hd.aac   FAILS      Works
audio.opus          Works      Works

Also, every 'v.redd.it' / reddit-video-player video plays the video fine but has no sound when using Firefox but plays both sound and video fine with Edge. Here's one for example - https://old.reddit.com/r/funny/comments/1i7y1nr/rock_paper_scissors/

I've seen lots of similar (but not identical) issues on Firefox video with no audio problems with suggestions a few things to try. In addition to what I've already mentioned above, I've tried the following without success -

- Restarting Windows - Restarting Firefox - Restarting Firefox with addons/extensions disabled - 'about:support' > Refresh Firefox - 'about:support' > Clear startup cache - (hamburger) > more tools > task manager > (click the little profile icon for the page playing the video) - I've checked the settings suggested here: https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues#w_check-some-firefox-settings

I realise it may be possible to side-step this problem by flailing around with more drastic work-arounds like trying a clean re-install of Windows or a full uninstall and clean of Firefox, but that doesn't really help figure out the problem, which leaves the possibility it could easily happen again to me or others when it might be something that can be more properly fixed or guarded against in Firefox itself, so I hope someone can suggest what might be done to home in on identifying the cause of the problem and so learn whether a more precise fix can be employed.