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Cannot play video

I use firefox 83.0 on Ubuntu 20.04. Browser does not play videos on Twitter, Reddit or Netflix. Youtube plays some videos but some videos show error "your browser does no… (tuilleadh eolais)

I use firefox 83.0 on Ubuntu 20.04. Browser does not play videos on Twitter, Reddit or Netflix. Youtube plays some videos but some videos show error "your browser does not currently recognize any of the video formats available". I cannot find any viable solution. what should I do?

I installed chrome and it plays all the videos. So there must not be any problem in OS.

Asked by anchitxp 1 bhliain ó shin

Answered by jscher2000 - Support Volunteer 1 bhliain ó shin

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Importing Logins/Passwords

I have a Linux system with Firefox 83.0 installed. I also have a CSV file of logins from an earlier Firefox. How can I import or use this CSV file to move over my login… (tuilleadh eolais)

I have a Linux system with Firefox 83.0 installed. I also have a CSV file of logins from an earlier Firefox. How can I import or use this CSV file to move over my logins/passwords. I wish not to use Sync because it is someone else's machine. Robert

Asked by robweir 1 bhliain ó shin

Answered by TyDraniu 1 bhliain ó shin

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Why I get: DOMException: The quota has been exceeded. ?

Hello. I need help with: `DOMException: The quota has been exceeded.` I'm trying to use IndexedDB. However, the code is requesting persistent storage: `await window.navig… (tuilleadh eolais)

Hello. I need help with: `DOMException: The quota has been exceeded.` I'm trying to use IndexedDB. However, the code is requesting persistent storage: `await window.navigator.storage.persist();` (and this is returning true) This website is only storing about 8MB of data and I have a different website storing 200MB of data (userscript) The storage medium still has 140GB available. What quota did I exceed? If this is the wrong place, please direct me to the right place

Asked by brunoais 1 bhliain ó shin

Answered by brunoais 1 bhliain ó shin

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Download speed in Firefox is very slow

All things I try to download on Firefox are extremely slow compared to other apps like Steam, torrents and other apps. I get 90mb/s on the download speed checks, but when… (tuilleadh eolais)

All things I try to download on Firefox are extremely slow compared to other apps like Steam, torrents and other apps. I get 90mb/s on the download speed checks, but when I try to download something on Firefox, it downloads at like, 120 KB/s.

Asked by pedro.santos.valim 1 bhliain ó shin

Answered by pedro.santos.valim 1 bhliain ó shin

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PR_END_OF_FILE_ERROR

In the last week I've continually had the error message PR_END_OF_FILE_ERROR appearing in place of various websites. There's no consistency - one day a website can load f… (tuilleadh eolais)

In the last week I've continually had the error message PR_END_OF_FILE_ERROR appearing in place of various websites. There's no consistency - one day a website can load fine, the next I get the error message, the next day it'll load fine again. And the problem seems to be getting worse... It's driving me mad! Please help!

Asked by simhort 1 bhliain ó shin

Answered by FredMcD 1 bhliain ó shin

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How to locate and change Firefox Cache storage location

1) Because the built in options are ambiguous I want to flush the temporary Cache storage directory myself, but I can't find it. Where is it? 2) Then I want to relocat… (tuilleadh eolais)

1) Because the built in options are ambiguous I want to flush the temporary Cache storage directory myself, but I can't find it. Where is it? 2) Then I want to relocate it, but here are Mozilla's instructions for how to reset it:

==

To set Firefox's cache folder, first type “about:config” (omit quotes throughout) into the program's address bar and then hit “Enter.” Right-click on any of the displayed properties, select “New” and then select “String” to display the New String dialog box. Enter “browser.cache.disk.parent_directory” into the box and then click “OK” to display the New Value dialog box. Enter the full filepath to the folder you wish to use as the cache folder, and then click “OK.”

==

Doesn't work.

So, after finding the current location and flushing it how do I change it?

Asked by i_am_jim1 1 bhliain ó shin

Answered by jscher2000 - Support Volunteer 1 bhliain ó shin

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How to isolate one instance of FirefoxCP Web Content on my MacBook Pro

My MacBook Pro is running OS 11.0.1 and using Firefox 83.0. My battery runs down faster than it used to. Apple suggested checking the Activity monitor and I noticed sever… (tuilleadh eolais)

My MacBook Pro is running OS 11.0.1 and using Firefox 83.0. My battery runs down faster than it used to. Apple suggested checking the Activity monitor and I noticed several instances of FirefoxCP Web Content. I have lots of tabs open. Most of them are using <1% of CPU, but one is about 50%. Is there any way to figure out what that is other than shutting down the tabs one at a time and watching the Activity Monitor?

Asked by jerryalevin 1 bhliain ó shin

Answered by TyDraniu 1 bhliain ó shin

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Firefox Lockwise doesn't show "Import from file" or "Import from another browser" options

Hi! I'm trying to import my passwords from Chrome and I can't because there isn't the option, like it is described in this tutorial. https://support.mozilla.org/en-US/kb/… (tuilleadh eolais)

Hi! I'm trying to import my passwords from Chrome and I can't because there isn't the option, like it is described in this tutorial. https://support.mozilla.org/en-US/kb/import-login-data-file

What can I do?

Asked by jjpv151088 1 bhliain ó shin

Answered by cor-el 1 bhliain ó shin

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Video playback "Video can't be played because the file is corrupt" despite the file being perfectly fine.

So I've noticed how some video files are able to be played back in Firefox. Some are not able to what so ever, for example I've created a text video using this FFPMEG com… (tuilleadh eolais)

So I've noticed how some video files are able to be played back in Firefox. Some are not able to what so ever, for example I've created a text video using this FFPMEG command: ffmpeg -f lavfi -i testsrc=duration=10:size=1280x720:rate=30 testsrc.mp4

which created the following file: https://astolfo.nl/i/z2ada.mp4 Both the uploaded version and the local .mp4 are unable to be played back in Firefox. However opening them up in edge chromium both files play back perfectly. Besides Edge I've also confirmed it plays back nicely in MPV.

I've tried Hardware acceleration, but both having it on and off did not change the fact that these files wouldn't want to playback in Firefox. Safe mode also did not effect this issue.

Asked by dapal003 1 bhliain ó shin

Answered by jscher2000 - Support Volunteer 1 bhliain ó shin

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Accidentally removed the bookmark star button from address bar- how do I get it back?

I accidentally deleted the Blue start for favorites on the address line. I got it back but it does not recognize any of my previous saved pages. As of now I would have t… (tuilleadh eolais)

I accidentally deleted the Blue start for favorites on the address line. I got it back but it does not recognize any of my previous saved pages. As of now I would have to re save all my previously saved web sites. Any way I can get back the original blue star and have it show my previously saved pages. Thanks in advance.

NOTE: if you look at the pic you need to X ot of the 1st pic. For some reason it is popping up in front of mine Sry

Asked by rfc716 1 bhliain ó shin

Answered by cor-el 1 bhliain ó shin

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firefox opens off screen

On new laptop with Windows 10, with an external monitor in extended desktop mode, Firefox is opening partially off screen such that the top bar is inaccessible so I canno… (tuilleadh eolais)

On new laptop with Windows 10, with an external monitor in extended desktop mode, Firefox is opening partially off screen such that the top bar is inaccessible so I cannot drag it back on screen. If I close it and reopen, it will usually be back on screen. How can I fix this?

Perhaps related: tabs are not reopened and Restore Previous Session does not work.

There are no extensions open.

Thank you for assistance.

Asked by David400 1 bhliain ó shin

Answered by Colin M 1 bhliain ó shin

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Can't seem to recover my session

Hi, I always have dozens of tabs opened, if not hundreds. They have vanished. I’ve been trying to follow the topics on the matter, such as the one named ‘Session won't lo… (tuilleadh eolais)

Hi,

I always have dozens of tabs opened, if not hundreds. They have vanished. I’ve been trying to follow the topics on the matter, such as the one named ‘Session won't load’ (questions/1254740), to no avail.

Finally, this time I remembered not to close Firefox when I saw my tabs where suddenly missing. I’ve never seen the ‘Restore the previous session’ on the Firefox menu, and neither did I this time. Without closing the browser, I did a backup of the ‘sessionstore-backups’ folder. It contains:

‘previous.jsonlz4’, from 22/11/2020 17:42 ‘recovery.baklz4’, from 22/11/2020 18:57 ‘recovery.jsonlz4’ from 22/11/2020 18:58 ‘upgrade.jsonlz4-20201027185343’ from 31/10/2020 13:42 ‘upgrade.jsonlz4-20201108180448’ from 10/11/2020 15:05 ‘upgrade.jsonlz4-20201112153044’ from 22/11/2020 10:34

The one I need is ‘previous.jsonlz4’, since by 18:57 I’ve already lost my tabs. From the update backups I think I could also use the one from 22/11. In any case, I don’t understand what I am doing wrong so as to recover the ‘previous.jsonlz4’. This is what I’ve tried from different threads on my profile folder:

The ‘-backup’ and ‘OLD’ changes belong to different attempts

- Rename (on ‘sessionstore-backups’ folder) ‘recovery.jsonlz4’ and ‘recovery.baklz4’ to ‘recovery-backup.jsonlz4’ and ‘recovery-backup.baklz4’, and also tried with ‘recoveryOLD.jsonlz4’ and ‘recoveryOLD.baklz4’ - Rename ‘sessionstore-backups’ folder to ‘sessionstore-backupsOLD’ - Rename (on the main profile folder) ‘sessionstore.jsonlz4’ file to‘sessionstore-backup.jsonlz4’, and also tried with ‘sessionstoreOLD.jsonlz4’ - Copy/paste the ‘previous.jsonlz4’ file into the main profile folder. - Rename ‘previous.jsonlz4’ to ‘sessionstore.jsonlz4’

Nothing has worked. Once followed the steps, Firefox keeps opening my startup page. Note that it does not restore my previous session (that is, some tabs regarding this same subject), but my startup page, which means my attempts are having some effect, although not the desired one. I do have the ‘Restore previous session’ checkmarked in ‘Setting/General/Startup.

I also tried to replace ‘recovery.baklz4’ (on ‘sessionstore-backups’ folder) with ‘previous.jsonlz4’, from 22/11/2020 17:42, hoping to be prompted with the ‘Well, this is embarrassing’ + ’Restore’ window. I had no success.

I’ve been trying to recover my tabs for hour by now and don’t find what I am doing wrong. Why does Firefox refuse to load my ‘previous.jsonlz4’ file? Am I missing something? Maybe ‘previous.jsonlz4’ is corrupted or something? Should I try to use the ‘upgrade.jsonlz4-20201112153044’ from 22/11/2020 10:34 file? (Although I would lose some information)

Some people talk about a ‘History > Restore Previous Session’. I cannot find anything similar.

Thank you very much

Asked by delfion.815 1 bhliain ó shin

Answered by jscher2000 - Support Volunteer 1 bhliain ó shin

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Hmm. We’re having trouble finding that site.

I saw a post on this where they were instructed to go to safe mode and Viola! it works. That is fine, but it does not fix the problem. My Firefox browser opens all links… (tuilleadh eolais)

I saw a post on this where they were instructed to go to safe mode and Viola! it works. That is fine, but it does not fix the problem.

My Firefox browser opens all links except what appears to be links from ads or forwarding links from a site to where something is being sold.

Whenever I click on one of these I get the, "Hmm. We’re having trouble finding that site." They open fine on Edge. Is there a setting on Firefox that is blocking these?

Asked by SJMaye 1 bhliain ó shin

Answered by SJMaye 1 bhliain ó shin

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large black boxes or lines are appearing and preventing me from entering text in varous programs’ for ‘Firefox’

large black boxes or lines are appearing and preventing me from entering text in various programs’ for ‘Firefox’ These are very large black "boxes" that also cause gmail… (tuilleadh eolais)

large black boxes or lines are appearing and preventing me from entering text in various programs’ for ‘Firefox’

These are very large black "boxes" that also cause gmail to flick in and out from a large to a small display

Asked by Graeme 1 bhliain ó shin

Answered by cor-el 1 bhliain ó shin

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How can I make DuckDuckGo my default search engine?

I have searched & searched and read & read and have not found Joy. I followed the Firefox DDG install instructions at duckduckgo.com (which succeeded and now that… (tuilleadh eolais)

I have searched & searched and read & read and have not found Joy.

I followed the Firefox DDG install instructions at duckduckgo.com (which succeeded and now that it's succeeded can't be duplicated), and here: https://www.linuxmint.com/searchengines/anse.php?sen=DuckDuckGo (which doesn't work), but here: 'Preferences' > 'Search' > 'Default Search Engine' DuckDuckGo doesn't appear in the drop-down list. Help!

Asked by Mark Filipak 1 bhliain ó shin

Answered by cor-el 1 bhliain ó shin

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Downloading torrent files

Greetings.Every time I try to download any torrent file browser asks what program to use. I always press open with Mutorrent and press button use as default program but e… (tuilleadh eolais)

Greetings.Every time I try to download any torrent file browser asks what program to use. I always press open with Mutorrent and press button use as default program but every time I try to download it alwas ask same.I try a lot of things and nothing seems to help. Very annoying because instead of one click you need to do it 3 times and wait a delay.

Asked by iusechainsaw 1 bhliain ó shin

Answered by jscher2000 - Support Volunteer 1 bhliain ó shin