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Does Firefox support .mp4 video?

On page https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox?redirectslug=viewing-html5-audio-and-video&redirectlocale=en-US I find "AAC and H.264/MPEG-… (read more)

On page https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox?redirectslug=viewing-html5-audio-and-video&redirectlocale=en-US

I find "AAC and H.264/MPEG-4 AVC are patented audio/video compression formats. They can be viewed in Firefox using built-in OS libraries (so neither Mozilla nor you need to pay a fee) if embedded in the MP4 container format (.mp4, .m4a, .m4p, .m4b, .m4r, .m4v file types)."

But when I create an HTML page with the following HTML5 code:

<!DOCTYPE html>
<html>
<body>
</body>
This is a test of video.
<video src="C:/MyVideoFile.mp4" controls>
</video>
</html>

I get the error "No video with supported format and MIME type found". Does Firefox in fact support .mp4 video? If so, what changes do I need to make in the HTML?

Asked by WoodyFF 1 month ago

Answered by WoodyFF 1 month ago

  • Solved

How to do multi-line Bookmarks bar after 84-update?

Hi all! How to do multi-line Bookmarks bar after 84-update? All code from userChrome.css that working on 83 update and has 3 working lines was crashed after 84, and bookm… (read more)

Hi all!

How to do multi-line Bookmarks bar after 84-update?

All code from userChrome.css that working on 83 update and has 3 working lines was crashed after 84, and bookmarks bar have only 1 line now(

Any body know how to fix it?

ps: sorry for bad english)

Asked by Tim 1 month ago

Answered by jscher2000 1 month ago

  • Solved

How to view image with the 'internal' viewer in the wepages

Hi, I'm searching an answer to my problem but, please sorry, I don't find it. On some webpages, there is an 'internal' viewer for the images (or thumbnails). With a pre-v… (read more)

Hi, I'm searching an answer to my problem but, please sorry, I don't find it.

On some webpages, there is an 'internal' viewer for the images (or thumbnails).

With a pre-version of Firefox Quantum, on this webpage, for example, if you click on the images at the bottom of the page, the old FF showed the image with a internal viewer like in the attached image.

On the current Firefox, it asks me to view the image with the standard Windows imageviewer (or save it). Where is the option to open such images in the webpage iteself? TIA.

Asked by linuxiano 1 month ago

Answered by linuxiano 1 month ago

  • Solved

spectrum webmail not loading

Trying to log in to spectrum > e-mail. Log-in to spectrum is fine. Link on that page loads the basic frame and links for the webmail page but the e-mail content does … (read more)

Trying to log in to spectrum > e-mail. Log-in to spectrum is fine. Link on that page loads the basic frame and links for the webmail page but the e-mail content does not load, where it should be is just white space, and the links in the frame do not work. This happens with chrome as well, on my desktop (win10) and on my laptop (Win7). I don't use the webmail often and so do not know when this might have started to be a problem - but it has not always been a problem.

The webmail page loads well with Edge.

Firefox is my main browser, don't use Chrome much. FF is up to date. Popup blocker for those pages is disabled.

What's going on?

Asked by GWilliamT 1 month ago

Answered by cor-el 1 month ago

  • Solved

Firefox closes and reopens constantly without any error messages

Hello! I need help on a very strange problem I had recently with my Firefox. I have Firefox 83.0 64-bit installed on my Windows 7 Home Basic desktop PC. Some time after m… (read more)

Hello! I need help on a very strange problem I had recently with my Firefox. I have Firefox 83.0 64-bit installed on my Windows 7 Home Basic desktop PC. Some time after maybe version 81 and above, I noticed that my Firefox randomly closes and reopens without showing any error messages. I noticed that the most consistent time this phenomenon happens is when I turn on my PC and start Firefox, it almost always closes and reopens, sometimes even more than once. It acts like the browser crashed, but the weird thing is it doesn't show any error message saying that the browser crashed. Once I opened Firefox at least once after I turn on my PC, even if I manually closed it and reopen it later, it will not crash on Firefox startup, it will probably only crash again after I restarted my PC and open Firefox. Also rarely, Firefox randomly closes and reopens whenever I browser whatever website with no reason whatsoever, but this only happens 3 out of 10 times.

I opened Troubleshooting Information to look for clues on what might be causing this, and I noticed "Launcher Process" is "Disabled due to failure". I am not sure what that means though, but I have a feeling this might be related somehow?

If anyone has any idea on what's going on, please help me. Thanks!

Asked by mario62746 1 month ago

Answered by mario62746 1 week ago

  • Solved

FF83 freeze on page but continues in new tab

I open a web page and soon after time page freeze (loading for ever) after some clicks. For example i open a page to order items to buy. After 2-10 clicks page freeze..an… (read more)

I open a web page and soon after time page freeze (loading for ever) after some clicks. For example i open a page to order items to buy. After 2-10 clicks page freeze..and i open in new tab same page to complete my order. This is crazy. 2 months now same behaviour. Even tried refresh or safe mode...same behaviour. All other browsers work fine ie,edge,chrome opera. Using kaspersky antivirus and disabled all network security features but still same. Does FF need any incoming port in firewall? I am using FF for ever from first release, is my main browser and now start thinking to quit cause i can not make my bussiness with it. The pictura shows Mozilla Support tab still loading.

Asked by george 1 month ago

Answered by cor-el 1 month ago

  • Solved

New wider address bar

I do not like this wide address bar and need to go back to classic look. I tried some links on this support but it does not help. I would also like to to have to reset my… (read more)

I do not like this wide address bar and need to go back to classic look. I tried some links on this support but it does not help. I would also like to to have to reset my preferences after each update. My version is 83.0 on Windows 7.

Thanks

Asked by phil.cote 1 month ago

Answered by cor-el 1 month ago

  • Solved

icons of html and htm files do not display anymore

Hello, I'm using the latest version 83.0, 64 bit on Win 7, Ultimate The standard icons that every html and htm files used to have are not displayed anymore in the Explore… (read more)

Hello, I'm using the latest version 83.0, 64 bit on Win 7, Ultimate The standard icons that every html and htm files used to have are not displayed anymore in the Explorer - the icon is just a white square with bent upper right corner. If I switch to Chrome or Edge as default browser they display properly. How to fix it?

Asked by MR 1 month ago

Answered by MR 1 month ago

  • Solved

Page Actions Drop-down Menu

I have two defined log-in users on my custom-built Windows 7 Pro desktop. On the account I use, the last entry in the Page Actions menu the "Take a Screenshot" option lo… (read more)

I have two defined log-in users on my custom-built Windows 7 Pro desktop. On the account I use, the last entry in the Page Actions menu the "Take a Screenshot" option lo longer appears at the bottom of the menu. However, on the other account the "Take a Screenshot" option does appear? I can find nothing in the Firefox 83.0 "Options" or "Customize" menu that can affect the Page Actions menu in any way, nor can I see any apparent difference in any other option in effect between the two user accounts' settings? Any ideas on how I can get my "Take a Screenshot option back, short of uninstalling Firefox from the computer and re-installing, wiping out both users' bookmarks, add-ons, etc.? Thanks.

Asked by dick-lincoln 1 month ago

Answered by dick-lincoln 1 month ago

  • Solved

Halifax online banking Error: 1007 ID: 18.848e7b5c.1607617301.26f5a8f8

Today I kept getting the above error message when I tried to log on to Halifax online banking. I do not run a VPN. I cleared the Halifax cookies. I rebooted my router … (read more)

Today I kept getting the above error message when I tried to log on to Halifax online banking. I do not run a VPN. I cleared the Halifax cookies. I rebooted my router and I rebooted my laptop. I still get this error message. However I can log on OK if I use Chrome so this must be a Firefox issue. Any other suggestions?

Asked by Rog 1 month ago

Answered by jonzn4SUSE 1 month ago

  • Solved

Firefox designers out to lunch?

Tried to send feedback on the supid move of close other/to right tabs off main right click menu and got this: Please check back soon We've paused submissions to this form… (read more)

Tried to send feedback on the supid move of close other/to right tabs off main right click menu and got this:

Please check back soon

We've paused submissions to this form so that we can improve how we collect feedback.

So now they not only won't listen to their users, remove all the complaints about UI changes we DON'T want or have any need for, now they don't even accept feedback. Guess they were overwhelmed.

Sheesh.

Frustrated Firefox user from Netscape v1.something (.7?). Time to move to Opera and leave Firefox to the idiots that don't know how or can't use a mouse to click the right option on a menu that "they" say is the reason for the moving of the options to a sub menu. At least they could give us an OPTION to put it back where it belongs. Ditto for the "megabar" stupidity that BLOCKS the view of my bookmarks toolbar!!!!

Asked by rwernst 1 month ago

Answered by jscher2000 1 month ago

  • Solved

recent update to V83.0 and now, I cannot log onto my tesco account and I have to use the dreaded IE

I have tried re entering all my data, user name password etc but still it fails. Tesco "help desk" suggest changing my browser. (Why not reinstall windows at the same tim… (read more)

I have tried re entering all my data, user name password etc but still it fails. Tesco "help desk" suggest changing my browser. (Why not reinstall windows at the same time ).. so no help there.

Anyone have a thought as to what I can do?

Asked by rick_fornalski 1 month ago

Answered by rick_fornalski 1 month ago

  • Solved

Logins and Passwords Gone with Refresh

I received a Firefox update message (refresh) last night. Without hesitation, I clicked. I was updated to Firefox 83.0 (32 bit). (FYI-I'm still using Windows 7.) Immediat… (read more)

I received a Firefox update message (refresh) last night. Without hesitation, I clicked. I was updated to Firefox 83.0 (32 bit). (FYI-I'm still using Windows 7.) Immediately after, I realized all of my logins and passwords were gone. A "Please enter you primary password to view logins and passwords" banner is at the top of the page. When you hit the login button, the banner disappears. (I'm already logged in.) I'm left with a "no synced logins found" message. I'm always signed into Firefox when I use a browser and save login information. Not to mention, the were there moments before I hit refresh.

Of course, I don't have passwords stored anywhere else and need to access a site sooner rather than later. (whomp, whomp) I've seen "logins.json" and "logins-backup.json" files mentioned in other posts. Is it safe to assume these magic files hold login/password information? If so, where do I upload?

Any help would be greatly appreciated!

Asked by TNorman 1 month ago

Answered by TNorman 1 month ago

  • Locked

?????

alles sch......... solche probleme in diesen ausmaas hatten wir mit xp nei !! warum ist diese system so a flop !? nur probleme ! auch in üc werkstäten, heißt's es geht n… (read more)

alles sch......... solche probleme in diesen ausmaas hatten wir mit xp nei !! warum ist diese system so a flop !? nur probleme ! auch in üc werkstäten, heißt's es geht nicht, ma müsse sich damit abfinden !! ist das win system wirklich so sch......geworden ? die ganzen neu erfindungen nach xp ist verrufen ! i kann nur deutsch dazu ! u. hier alles nur englisch beschrieben ! hoff i drück das richtige zum senden an ??

Asked by carlo98 1 month ago

Last reply by philipp 1 month ago

  • Solved

Email links opening new browser session

Recently when clicking on a link in an email, a new Firefox browser opens rather than the clicked website being added to the already open browser. How do I set email lin… (read more)

Recently when clicking on a link in an email, a new Firefox browser opens rather than the clicked website being added to the already open browser. How do I set email links to be added to the already open browser as has been the case for a long time? Thank you

Asked by pa1 1 month ago

Answered by cor-el 1 month ago

  • Solved

sign-ins at websites

I accidentally typed in my password at a website sign-in, Now, the password shows up as a user sign-in. How do I delete this sign-in (my password) from the sign-in drop d… (read more)

I accidentally typed in my password at a website sign-in, Now, the password shows up as a user sign-in. How do I delete this sign-in (my password) from the sign-in drop down.

Asked by bruce64923 1 month ago

Answered by jscher2000 1 month ago