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Only some videos play without audio, only in Firefox

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, ye… (了解更多)

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.

Ernie_Gurney 于 2 周前提问

最后由 Ernie_Gurney 于 14 小时前回复

Can't get playback with Firefox browser for either Tubi TV or Pluto TV anymore?

I cannot seem to get playback with Firefox browser for either Tubi TV or Pluto TV anymore. Have uninstalled and reinstalled Firefox, have tried to just refresh data yet s… (了解更多)

I cannot seem to get playback with Firefox browser for either Tubi TV or Pluto TV anymore. Have uninstalled and reinstalled Firefox, have tried to just refresh data yet still no playback.

d.selland 于 1 天前提问

最后由 markwarner22 于 1 天前回复

video not redirecting

hi i need help with a website that used to play videos but since last few times its not working as its saying video cannot be redirect to due to cookies but i clear them… (了解更多)

hi

i need help with a website that used to play videos but since last few times its not working as its saying video cannot be redirect to due to cookies but i clear them so can you help

jdoshi29 于 1 天前提问

最后由 jscher2000 - Support Volunteer 于 1 天前回复

  • 已解决

account duplicates

Please 🙏 I am tired of the same thing nothing changes I will get control over my podcast and Cash app pay pal and they take it right back I truly know who's doing this wh… (了解更多)

Please 🙏 I am tired of the same thing nothing changes I will get control over my podcast and Cash app pay pal and they take it right back I truly know who's doing this where do I start

Equaine Anthony 于 1 天前提问

Equaine Anthony 于 1 天前回答

  • 已解决

Horizontal Graphical Artefacting in Youtube and other video's

Hello! from this morning and alongside a new Firefox update i've been having graphical artifacts on Youtube/Facebook/Netflix. I've followed all the standard steps. Disa… (了解更多)

Hello! from this morning and alongside a new Firefox update i've been having graphical artifacts on Youtube/Facebook/Netflix. I've followed all the standard steps.

Disabled Hardware Acceleration. Updated Video Drives. Run FF in Safe Mode without plugins. Disabled Router level VPN and Ghostery.

Any ideas?

I'm running FF135.0 Geforce 572.16 Drives (30th Jan) 3070TI. Windows 10 Pro 22H2.

JustabunchofdrivesJBOD 于 2 天前提问

JustabunchofdrivesJBOD 于 2 天前回答

firefox has no sound except through my speakers?

howdy! i have no sound from my firefox browser all of a sudden :'). it was working fine about an hour ago but now it's just... gone. i'm on the latest update (05… (了解更多)

howdy!

i have no sound from my firefox browser all of a sudden :'). it was working fine about an hour ago but now it's just... gone. i'm on the latest update (05/02/25) & i'm not sure what to do.

  • my headphones are fine (sound works completely through them on other apps)
  • absolutely NO sound is coming from firefox with my headphones on
  • sound will play through my speakers completely fine
  • i've tried restarting firefox & nothing worked
  • eartrumpet is showing firefox for my speakers but not my headphones?
  • firefox wasn't showing up at all on media controller???

any help is appreciated hah?????

TJ 于 2 天前提问

Audio player runs but no audio/ sound.

on Sunday, Feb. 02, 2025, at about 20H15 PT, WSJ security monitor "zapped" Firefox browser audio player . While i was texting my son the security was challenged to liste… (了解更多)

on Sunday, Feb. 02, 2025, at about 20H15 PT, WSJ security monitor "zapped" Firefox browser audio player . While i was texting my son the security was challenged to listen to my keystrokes , from both my iPhone & laptop, while i had music from my speaker system in the background.

My iPhone & laptop "use" Firefox browser. Cannot get sound when i try to play online playlists.

Maybe reinstall Firefox browser on iPhone & PC laptop will correct the problem?

Tues. Feb. 04/'25 12h18 PT

Wiil be away until about 17h PT. EaRL.

E-humm 于 3 天前提问

reels audio

i have been using firefox for quite some time. but as of late when i open a reels video on f/b sound works fine just no video. i have deleted ff and re loaded the latest … (了解更多)

i have been using firefox for quite some time. but as of late when i open a reels video on f/b sound works fine just no video. i have deleted ff and re loaded the latest ver. it will work on microsoft edge any help appreciate

rpow 于 4 天前提问

sound and some video

Sound and some video's don't work on facebook on my pc with firefox. Works fine on my phone with firefox . When I use a different browser on my pc it is fine. I am gettin… (了解更多)

Sound and some video's don't work on facebook on my pc with firefox. Works fine on my phone with firefox . When I use a different browser on my pc it is fine. I am getting pissed off with the piss poor help system you are running here. No help means No good. Do you even look at these crappy reports. Because you are not responding and I have no idea if you give a fuck? well do ya.

peteryoung20 于 4 天前提问

Slim Pen 2 disables touch capabilities in Firefox

I have a Microsoft Surface Pro 8 with a Slim Pen 2. I do a lot of searching in google maps and have noticed that I can access google maps and can use pinch to decrease an… (了解更多)

I have a Microsoft Surface Pro 8 with a Slim Pen 2. I do a lot of searching in google maps and have noticed that I can access google maps and can use pinch to decrease and expand the maps and if I open a street view I can use touch to move the field view around as it should be. The problem occurs is when I use my slim pen. Once I have used the slim pen to move a field or open a street view the touch capability stops working. I can still close the window and other things with the touch capability (system type functions), but within the browser it's disabled.

I have not noticed this occurring in any other web site or type. For example I can go to amazon and interchangeably use the pen and touch capability without issue.

I have tested this in Google Chrome and MS Edge and it does not disable the touch capability when I use the pen.

Scott Elliott 于 6 天前提问

最后由 markwarner22 于 5 天前回复

Pixilation of news channels and solcial media feed such as X, substack BBC and others

In playing videos from other feeds the video opens and within seconds the picture is pixilated although the sound is clear. Has been like this for about 5 days since your… (了解更多)

In playing videos from other feeds the video opens and within seconds the picture is pixilated although the sound is clear. Has been like this for about 5 days since your last release. Place the URL in Chrome and running the video shows NO pixilation. This is very frustrating.

I have attached various screen shots from different feeds

henry.wild 于 5 天前提问

Videos on YouTube/Instagram

I've been using Firefox for the various iterations of Windows for many years and it's gone smoothly. Now, when I play a YouTube or Instagram video in Windows 11, the vide… (了解更多)

I've been using Firefox for the various iterations of Windows for many years and it's gone smoothly. Now, when I play a YouTube or Instagram video in Windows 11, the video often becomes just an image of pixelated multicolored squares. The sound continues to play normally. On YouTube, the video continues to play. On Instagram the video tends to freeze. I've attached a screenshot from an Instagram video.

I checked my external monitor and it's definitely the laptop, which is less than a year old. This only happens with videos and other browsing works as usual. I have no issue using Chrome, so it seems to be a Firefox thing. I tried clearing the cache and history. When that didn't work, I uninstalled Firefox completely and reinstalled it. Same issue. I've attached a screenshot from an Instagram video. Thanks for any advice you can offer.

woodswoman 于 5 天前提问

Netflix and Peacock video has stopped working (but I can still hear the audio). Same issue on Chrome and Safari.

I decided to download Firefox and make it my default browser, so I downloaded it and followed some recommendations I found online for configuring security settings...but … (了解更多)

I decided to download Firefox and make it my default browser, so I downloaded it and followed some recommendations I found online for configuring security settings...but for the life of me I can't remember what those are.

Weeks later, I decide to watch Peacock, but the error message says I need to disable my ad blocker. I search for an ad blocker in the extensions but can't find one, so I start disabling other extensions like Facebook Container...but to now avail. I follow all the usual online steps--clearing my cache, restarting the application, restarting my computer, etc--but nothing works. I have the same error with Netflix, and switching to another browser yields the same result. So it must be something wrong with my system.

Can you help?

alexanderdominitz 于 1 周前提问

最后由 cor-el 于 6 天前回复

Video Won't Play in Browser

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 spinni… (了解更多)

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.

janswers 于 1 周前提问

最后由 markwarner22 于 6 天前回复