Firefox Support Forum

Open this url https://openfde.com/intro.mp4 and firefox shows "video can't be player because this file is corrupt".

Web Console logs: ``` Media resource https://openfde.com/intro.mp4 could not be decoded. intro.mp4

Media resource https://openfde.com/intro.mp4 could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_DECODE_ERR (0x806e0004) Details: void mozilla::AppleVTDecoder::OnDecodeError(OSStatus): OnDecodeError:ffffcd9a intro.mp4 ```

`ffmpeg -i` with this video file: ``` Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/path/to/intro.mp4':

 Metadata:
   major_brand     : isom
   minor_version   : 512
   compatible_brands: isomiso2avc1mp41
   encoder         : Lavf58.76.100
 Duration: 00:01:51.77, start: 0.000000, bitrate: 3243 kb/s
 Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 4096x2304 [SAR 1:1 DAR 16:9], 3109 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
   Metadata:
     handler_name    : ?Mainconcept Video Media Handler
     vendor_id       : [0][0][0][0]
 Stream #0:1[0x2](eng): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
   Metadata:
     handler_name    : #Mainconcept MP4 Sound Media Handler
     vendor_id       : [0][0][0][0]

```

Chrome is fine.

Trying to access my email account at Comcast, but recently (last few months) when signing in I get a blank page with the following message:

Firefox prevented this page from automatically redirecting to another page.

Followed by a link that says" Allow"

How can I correct this without having to "allow" each time?

thank you.

Doug

Hello, currently using 120.0.1 (64-bit) for macos and would like to know how to change behavior: When i'm trying to modify url in tab i'm currently working on and press enter/return it opens modified url in new tab for some reason. But when i hold option it opens it in current tab, is there any way to make it as default behavior? Thank you very much👍

I synchronized my Mac and iphone Firefox password accounts so I can share passwords between devices. I just realized I've lost all the passwords on my Mac. The only passwords I see are the ones stored on my iphone

Is there a solution to retrieving the passwords on my Mac?

Thanks

Hello

```

~ /Applications/Firefox.app/Contents/MacOS/firefox-bin

[1] 5919 killed /Applications/Firefox.app/Contents/MacOS/firefox-bin ```

Can't event imagine how to debug this - FF has stopped working totally from the command line, despite options etc It is still working when run from the dock however. But I need to start it from the terminal for the second profile

Hello, i've updated the Firefox browser to version 120 and since then polish texts in browser are broken. How can i fix it or restore to previous working browser version?

Hi, I am seeing issues with autoscrolling in 119.0. In Rundeck for example you can "follow" the output of playbooks that are running so you can dynamically see the log as it is written. The autoscrolling in this field has stopped working. When manually scrolling in the field, more messages appear but the autoscrolling is no longer functional. I have also seen it on other places, though I don't have remember good examples to add, so I don't believe it is Rundeck causing the issue--we also haven't updated rundeck recently in our environment, so it shouldn't have changed since before 119.0 was released. Let me know if there is more information I can provide to diagnose the issue.

Hi--

I recently upgraded from Mojave to Sonoma 14.2, and Firefox 120.0.1.

In Mojave, fn-F12 used to invoke a "Dashboard" with applets like Dictionary and Thesaurus.

With Sonoma, fn-F12 causes the bottom part of Firefox's frontmost window to become a web developer tool, same as ⌥⌘I, instead.

Can I get my Dictionary and Thesaurus back?

--Gil

For the last couple of weeks, whenever I access the finance.yahoo.com/ website, my computer slows to a crawl. I run Activity Monitor to show me FF memory usage has surged to 6.5 GB! I cannot just 'quit' FF, have to force quit to regain the memory. No problems with any other website. I am running Mac OS 12.7, 8GB RAM, FF 102.0.1

Any help/suggestions appreciated.

Regards, Peter Donlevy

On my old iMac, Firefox remembered sites I had visited and filled them in, like if I typed A it would autofill Amazon. This is not happening on my new 2023 iMac and I can't figure out how to turn this on. Also, I could see my site visit history on my old iMac, but this field is blank, with no history of sites visited shown, on my new machine. Help is appreciated. Please keep in mind that I am technically retarded and need step by step guidence. Thank you in advance for your help

Firefox on my mac has recently started displaying strange text in any windows where the browser itself chooses the font. I verified that the font settings are default, and the issue persists. Screenshots attached, any ideas?

Only my mac has this issue, my iPhone, as well as two Windows PCs all on the same account do not present with this.

Hi,

I am a student, who tend to mass download files at once. The annoying part is that after every download, firefox automatically opens up the downloaded file in a new tap. How can I disable automatically open files after download?

Thanks.

Dark Reader works for all sites except for mozilla.org, I think these webpages are over-ridden by the Firefox browser? I saw a couple archived posts recommending global changes for all sites via Firefox -> Settings -> Language and Appearance -> Colors, or to install themes. Neither option would work. I don't want to override all sites to dark globally, that's way to much change, just let Dark Reader change just mozilla.org.

Hey,

I've been having an odd issue with Firefox where tabs where I attempt to access youtube.com will immediately crash. This issue first arose when I attempted to log in to Youtube, and had never occurred before. When I did that login, the tab crashed, and I have been unable to access the website since (100% crash rate).

Basic details: The website does not visually load at all. However, the URL bar icons for the website do briefly appear prior to tab crash. (Autoplay button, etc). The crash is never reported in about:crashes.

I've tried the following tests, unsuccessfully: - Logging out of all Google accounts separately - Disabling all extensions - Transferring all of my data to a new computer - Reinstalling Firefox - Rebooting Firefox in troubleshooting mode

This problem does not occur on my Windows machine but occurred on my previous intel-based Mac and now on my current Apple Silicon Mac.

The only success I have had is in creating an entirely new Firefox profile. However, I would prefer to fix the issue, as I assume that porting all my settings to the new profile would... also probably bring the bug along.

Thanks for reading & any advice is appreciated.

Since approximately July 2023, Firefox gives me a beachball and pauses for about 10 seconds whenever I change between it and another app, or between one Firefox window and another. The same behavior does not occur with other browsers, likewise whether my connection is WiFi or wired.

I have No Proxy set in Network Settings. I am running a 2021 M1 Max Macbook Pro on Ventura 13.5.2.

I would appreciate any advice on how to troubleshoot and fix. Thanks.

I found how to backup and transfer my normal bookmarks, however I really need to backup and transfer my bookmark toolbar, specifically on the Mac version. I can only find the PC version instructions and they don't seem to translate between OS's.

I want to re-order the add-ons / extensions in the toolbar shared with the search bar. Customize toolbar only has functions/icons related to the operation of Firefox. I want to customize the extensions toolbar, but how?

In the add-ons page, I can remove, disable, or enable extensions, but I cannot change the order of them.

As an example, there is an add-on for my Firefox account that is leftmost in the bar of extension icons. I would like to move it all the way to the right. Again, how would I do that?

Thanks for your help.

For whatever reason, I can't find a simple way to file a bug report. Starting 120.0, or maybe in 120.0.1, I've started seeing a cursor appearing next to buttons and other components on web pages that you definitely would not expect to see cursors next to.

It seems that a cursor has started to display when I click on web components even if it's not a text entry field. I've included a screen shot that includes a cursor appearing next to the Refresh button in Gmail, for example.

There's even a cursor appear in the "Browse" button on this very page in the Add Images section.

52.9.0esr is claimed to be the last version for XP. Unfortunately it is not quite true. It is for XP SP2 ONLY. Trying to install on SP3 ends with the message that SP2 is required. IMO the installer is simply too strict on demanding exact version of SP ! https://www.mozilla.org/en-US/firefox/52.9.0/system-requirements/

I went through the list of versions (thanks Mozilla that they all are still available!) and found that the last version I can install is... version... 12.0b6. https://www.mozilla.org/en-US/firefox/12.0/system-requirements/

And indeed I installed 12.0b6 successfully but I would like to install 52.9.