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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… (xem thêm)

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.

Được hỏi bởi Ernie_Gurney 3 tuần trước

Lần cuối trả lời bởi Dave 3 ngày trước

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… (xem thêm)

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.

Được hỏi bởi janswers 2 tuần trước

Lần cuối trả lời bởi markwarner22 2 tuần trước

Captcha

For some time now I have not been able to access any website secured with Captcha verification. My browser doesn't recognize that I'm a human and keeps going back to squa… (xem thêm)

For some time now I have not been able to access any website secured with Captcha verification. My browser doesn't recognize that I'm a human and keeps going back to square one. Importantly: this problem does not occur in other browsers. However, I would prefer to stay with Mozilla, so it will be nice if something can be done with it. I didn't change any settings, I didn't change hardware, I didn't reinstall Mozilla, so that's not the problem. I've looked through my security settings and don't see anything that would help in this case. Especially since these are websites that I had previously accessed and logged in without any problems.

Được hỏi bởi alicja.b.kolanska 2 tuần trước

Lần cuối trả lời bởi NoahSUMO 2 tuần trước

Right Click Menu is Broken

My Firefox desktop app recently updated. After it updated, I now cannot access anything by right clicking. When I right click, a giant window of options shows up (see ima… (xem thêm)

My Firefox desktop app recently updated. After it updated, I now cannot access anything by right clicking. When I right click, a giant window of options shows up (see image). It doesn't change no matter what I click on. When I try to select something in the giant window of options, nothing happens. I'm having a very hard time with it, particularly because I can't open links into new tabs now.

Được hỏi bởi apoquogue 4 tuần trước

Lần cuối trả lời bởi cor-el 1 tuần trước

An error occurred during a connection to www.google.com. PR_CONNECT_RESET_ERROR Error code: PR_CONNECT_RESET_ERROR

PR_CONNECT_RESET_ERROR Error code: PR_CONNECT_RESET_ERROR This error occurs constantly on Firefox. I've had to go to Chrome to connect. I want to use Firefox, but not i… (xem thêm)

PR_CONNECT_RESET_ERROR Error code: PR_CONNECT_RESET_ERROR

This error occurs constantly on Firefox. I've had to go to Chrome to connect. I want to use Firefox, but not if it keeps doing this.

Được hỏi bởi elifair 1 tháng trước

Lần cuối trả lời bởi jonzn4SUSE 1 tháng trước

update deleted exe file on desktop using Windows 7

I accepted an update to my computer and immediately Firefox could not load, the exe file is missing. Again I use windows 7 . May have lost all passwords and bookmarks. Pl… (xem thêm)

I accepted an update to my computer and immediately Firefox could not load, the exe file is missing. Again I use windows 7 . May have lost all passwords and bookmarks. Please advise.

Được hỏi bởi Litl Dragon 1 tuần trước

Lần cuối trả lời bởi James 1 tuần trước

UNWANTED POP UPS!!!!!!

Everyday I get pop ups usually for car parts, all for ICE cars and I have an EV these days . . . . . Please stop sending them. Is that possible? Regards, [edited email … (xem thêm)

Everyday I get pop ups usually for car parts, all for ICE cars and I have an EV these days . . . . . Please stop sending them. Is that possible? Regards, [edited email from community support forum]

Được hỏi bởi ianto7 2 tuần trước

Lần cuối trả lời bởi jscher2000 - Support Volunteer 2 tuần trước

Display size since latest update on January 14th

My firefox automatically updated on January 14th. Since the update, it opens with the tool bar above/off the screen, the left side off the screen, and it doesn't allow m… (xem thêm)

My firefox automatically updated on January 14th. Since the update, it opens with the tool bar above/off the screen, the left side off the screen, and it doesn't allow me to scroll. If I go the the firefox icon at the bottom of the screen and click close window, I can sometimes get it to re-open normally and then leave it open for the balance of the day. I am running windows 11. My wife and I are have the same issue right after the update. Is there a fix on the way or a setting I can change to fix this.

Not as important but I want to get away from all things google. Right now my firefox is tied to a gmail account. To be void of google, do I need to completely take firefox off my computer and re-install with a new email account or can I transfer the account to a new email?

Appreciate your time Thanks so much for your help.

Tom

Được hỏi bởi Tom Edgar 1 tháng trước

Lần cuối trả lời bởi Yest 1 tháng trước

Update 134.0 has a bugged middle mouse button

I always use the middle mouse button (pressing the scroll wheel) to open and close new tabs, but since the update, it doesn't work anymore and now types "=" if the cursor… (xem thêm)

I always use the middle mouse button (pressing the scroll wheel) to open and close new tabs, but since the update, it doesn't work anymore and now types "=" if the cursor is in a text field. For context, I use an MX Master S3, mapped with Logi Options+.

Anyone else having this issue? How do I roll back to the previous version??

SOLVED: It was a bug with Logi Options+, not Firefox. When I hovered over the tab for the presets I had for CaptureOne, I noticed it also said Firefox. So seems something weird happened there. Deleted that preset and the issue in Firefox went away.

I couldn't find a way to delete this thread, though.

Được hỏi bởi FirefoxUserMJ 1 tháng trước

Lần cuối trả lời bởi jonzn4SUSE 1 tháng trước

Your PC doesn't have an app that can open this link. Try looking for a compatible app in the Microsoft Store.

Installed Firefox on my laptop. Already running on my desktop. Whenever I try to open a link, I get: Get an app to open this 'microsoft-edge' link Your PC doesn't hav… (xem thêm)

Installed Firefox on my laptop. Already running on my desktop.

Whenever I try to open a link, I get: Get an app to open this 'microsoft-edge' link

Your PC doesn't have an app that can open this link. Try looking for a compatible app in the Microsoft Store.

Is this Microsofts way of saying "Use Edge?" Can I change settings to make it work?

Được hỏi bởi PathMan 2 tuần trước

Lần cuối trả lời bởi John Son 2 tuần trước

Failure restorng from bookmark backup

This question relates to version 134.0.2 (64-bit). This morning I started Firefox and found that many of my bookmarks were missing. On trying to restore from the program … (xem thêm)

This question relates to version 134.0.2 (64-bit). This morning I started Firefox and found that many of my bookmarks were missing. On trying to restore from the program automatic backups, I get the repeated message "Unable to process the backup file." On examination, the files, while not in ASCII, appear to contain ASCII text strings recognizable from the bookmark descriptions. They are not, at least, empty. Unfortunately, I do not have an HTML format backup. Any idea why none of the backups work or what options I have? Thanks in advance.

Được hỏi bởi dclarke1 2 tuần trước

Lần cuối trả lời bởi cor-el 2 tuần trước

Pdfs won't open when using Firefox

I am an academic. I use Canvas. When I am in Canvas and I try to open a document in it from Firefox, what I get are solid black pages. I do not have this problem with Can… (xem thêm)

I am an academic. I use Canvas. When I am in Canvas and I try to open a document in it from Firefox, what I get are solid black pages. I do not have this problem with Canvas in Chrome or in Edge. I really don't want to use those Browsers. I actually have this problem with every PDF I try to open from all sites. This is a recent problem. But if I cannot correct it, I will have to use other Browsers.

E. Wray Bryant, Ph.D. [edited email from community support forum]

Được hỏi bởi wbryant 1 tháng trước

Lần cuối trả lời bởi jonzn4SUSE 1 tháng trước

Websites randomly load in the wrong font.

See attached screenshot. It just randomly happens from time to time, and I can't figure out what's causing it. I've used both Chrome and Firefox with the same results. He… (xem thêm)

See attached screenshot. It just randomly happens from time to time, and I can't figure out what's causing it. I've used both Chrome and Firefox with the same results. Help!

Được hỏi bởi Kevin Martin 4 tuần trước

Lần cuối trả lời bởi cor-el 2 tuần trước

Website logo not displayed

The logo in the top left-hand corner of my website's landing page does not display using Firefox but is displayed properly using every other desktop browser. Using Firefo… (xem thêm)

The logo in the top left-hand corner of my website's landing page does not display using Firefox but is displayed properly using every other desktop browser. Using Firefox, just my name is displayed in place of the logo. Chrome for Android has the same problem but Firefox for Android displays OK. On my iPad both Chrome and Firefox display properly. What are the reasons for this? Is there some upper limit for the dimensions of the logo (mine is oblong in shape)? Do I have some settings that don't suit certain browsers? My site was built using Wordpress/Elementor/OceanWP. Many thanks in advance for an answer!

Được hỏi bởi tony.melville 2 tuần trước

Lần cuối trả lời bởi cor-el 1 tuần trước