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'No video with supported format and MIME type found' issue

Hello everyone, sorry for the long post. For the last 3 days, I have been experiencing a very frustrating issue with videos posted ONLY on Facebook. Every time I try to o… (read more)

Hello everyone, sorry for the long post.

For the last 3 days, I have been experiencing a very frustrating issue with videos posted ONLY on Facebook.

Every time I try to open a Facebook video, the Facebook player opens (the one where you can see comments and likes on the right side), and Firefox gives the impression that the video is loading. But after a while, a 'cross' appears in the middle of the screen, below which 'No video with supported format and MIME type found' is written [Kindly refer to the attached screenshot].

Prior to this problem, I had NEVER, in 2 years, experienced any issue whatsoever with playing ANY videos on the Web. Firefox just suddenly decided to stop playing Facebook videos.

WHAT I ALREADY TRIED: - Reload video pages and play them again (FAILED) - Clear cache, cookies and restart Firefox (FAILED) - Start Firefox in Safe Mode (FAILED) - Uninstall Flash Player, try to play videos with the default Firefox player (any video on the Web would play, but Facebook videos FAILED) - Enable the Open H264 Cisco codec (FAILED) - Changing a few values in about:config *(such as media.directshow.enabled) to true/false (FAILED) - Refresh Firefox from https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings (FAILED)

ADDITIONAL INFORMATION: - I use Firefox 35.0.1 and have no other browser (besides the default Internet Explorer 6 which I never use) - I use Windows XP SP3 Professional - I have not downloaded/installed any software/extension/add-on which could have caused this problem

I still love Firefox, and have no intention of migrating to a competitor's browser, which is why I hope a prompt solution shall be found. As well, I am not considering dropping XP SP3 anytime soon; it is very stable and fulfills my requirements.

Thanking you for your time.

Asked by EL20 6 years ago

Answered by FredMcD 6 years ago

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access denied error message This XML file does not appear to have any style information associated with it. The document tree is shown below.

This is the message I am getting when I am in a website and click on a link to open. This XML file does not appear to have any style information associated with it. The d… (read more)

This is the message I am getting when I am in a website and click on a link to open.

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>AccessDenied<Message>Access Denied</Message><RequestId>619019A5A84CBA3D</RequestId><HostId>qZuu8SzPCGrkyyLPRJfAgAeIx5BJEq/LYC3g0/SS2rC92vtXgUR4JULvWAM8axbo</HostId></Error>

I have no idea what this means and how to fix it.

Asked by ffslucy 6 years ago

Answered by guigs 6 years ago

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Adobe Flashplayer plug-in freezes Mozilla Firefox whenever activated.

I am entirely unable to ever watch a video in Firefox which requires the Adobe Flashplayer plug-in. In fact, IF I activate the plug-in, Firefox goes into a "not respondin… (read more)

I am entirely unable to ever watch a video in Firefox which requires the Adobe Flashplayer plug-in. In fact, IF I activate the plug-in, Firefox goes into a "not responding" mode, which never ends. I DO, after anywhere from 15 to 40 minutes get a script quit responding message, but regardless of how I answer it, another freeze (or the same one) occurs, and after another interminable wait, I get a repeat message. This happens so many times I've left it to run more than 12 hours, then checked it, to find the message windows stacked. When I cleared the last of 20+ windows at the end of the 12 hours, I immediately got another freeze. The only fix to date has been to kill Firefox, either from the Task Manager, or from the "red X, and kill it now instead of waiting" options. Then, on restart, I have to get quickly to the add-ons page, and re-disable Adobe. The version of Firefox I'm running is 35.0.1 The version of Adobe I'm running is Shockwave Flash 16.0.0.305. I ran, over the space of 20 hours, several malware hunters (malware bytes, Microsoft System Security, AVG, AVAST, Spybot S&D, and others I can't remember now) with several issues found and cured. None, though, fixed this. My machine is an ACER Aspire 5732Z, running Windows 7, 64-bit. This problem cropped up about 2 months or less ago. I'm wondering if it is related to the latest version of Shockwave, and possibly occurred after a(n automatic) update.

Asked by micahd02 6 years ago

Answered by carbohydrates 6 years ago

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How can I make mp4 videos play in Firefox?

YouTube works fine. Other websites play videos, no problem. But then I'll go to a website and see a message that the video is either corrupt or is not supported. When I s… (read more)

YouTube works fine. Other websites play videos, no problem. But then I'll go to a website and see a message that the video is either corrupt or is not supported. When I search for how to play mp4 in Firefox I end up at this site: http://www.jwplayer.com/blog/the-state-of-html5-firefox-now-supports-mp4/ With the huge headline Firefox Now Supports MP4. No, it ****ing doesn't! A bit frustrated, because everywhere I look for help on this, I either come across pages saying it should work, Firefox supports mp4 etc, OR forums where it's webmakers asking the question and then the solution is something wrong in their coding - which doesn't help me, the lonely end user. When I go to this suggested test site: http://techslides.com/demos/sample-videos/small.mp4 I get the error message: Video can't be played because the file is corrupt. No, it's not. I can download it and play it on WinAmp. When I go to this suggested test site: http://www.html5videoplayer.net/html5video/mp4-h-264-video-test/ I get the error: No video with supported format and MIME type found. Huh? Again, I can download and play it fine. But Firefox won't play it. Soooooo Is there a fix in the wind? Is there something I can tweak or change to make Firefox recognize and play this stuff? Is there a plugin/extension/addon that I need to download to play mp4? If this is a known problem that is going to be fixed eventually, is there something I can do as a substitute (ie a plugin for now)? Because it seems like the only alternative is to abandon Firefox and start using Chrome, which has no problem with the above-mentioned videos.

Asked by StickBoy 6 years ago

Answered by cor-el 6 years ago

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How do I change Firefox's audio output device without relaunching the browser?

I frequently switch between different headsets and speakers using USB audio devices. Whenever I change from audio device to another, Firefox does not change it's audio o… (read more)

I frequently switch between different headsets and speakers using USB audio devices. Whenever I change from audio device to another, Firefox does not change it's audio output to match my current device. Other programs/games follow suit when I change my default audio device and I really dislike that I have to exit out of Firefox completely and reopen for my audio to come through the correct device. It's not a huge issue, but when I have multiple windows and multiple tabs open it can be annoying having to start my browsing session all over again. Any tips to deal with this issue?

Thanks!

Asked by Qwelz 6 years ago

Answered by philipp 6 years ago

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Cannot get on The National Lottery site-can access all other websites-have done all the suggestions on other posts-still can't access the site

Can access the National Lottery site on my husbands laptop but not on my laptop or a tablet ? Have tried all the suggestions on the replies to other people who have had t… (read more)

Can access the National Lottery site on my husbands laptop but not on my laptop or a tablet ? Have tried all the suggestions on the replies to other people who have had this problem ??

Asked by Rustyone 6 years ago

Answered by FredMcD 6 years ago

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Flashplayer 16 causes unresponsive script , mozalloc plugin container crashes

Salute all , I have latest Firefox v.35 since I downloaded latest version of flashplayer 16.0.0257 I have been experiencing unresponsive scripts on web pages with flash… (read more)

Salute all , I have latest Firefox v.35

since I downloaded latest version of flashplayer 16.0.0257 I have been experiencing unresponsive scripts on web pages with flash animation. After entering such a page ( e.g. http://helpx.adobe.com/flash-player.html ) firefox hangs, scripts unresponsive and I have to end firefox through task manager .

Crash Report : Problem signature:

 Problem Event Name:	APPCRASH
 Application Name:	plugin-container.exe
 Application Version:	35.0.0.5486
 Application Timestamp:	54af7153
 Fault Module Name:	mozalloc.dll
 Fault Module Version:	35.0.0.5486
 Fault Module Timestamp:	54af69d4
 Exception Code:	80000003
 Exception Offset:	00001425
 OS Version:	6.1.7601.2.1.0.256.48
 Locale ID:	1032
 Additional Information 1:	0a9e
 Additional Information 2:	0a9e372d3b4ad19135b953a78882e789
 Additional Information 3:	0a9e
 Additional Information 4:	0a9e372d3b4ad19135b953a78882e789

When i disable flashplayer everything runs fine .

I have tried so far : -uninstall /reinstall flashplayer through official Adobe uninstaller

-disabled all extensions & plugins and run in safe mode

-uninstall /reinstall firefox clearing also all %appdata%

-clear all prefetch /registry/etc through CCleaner & SlimComputer& WiseRegistryCleaner

-Reset Firefox Profile

-disabled hardware acceleration in firefox


Nothing works .

Would like some help please :/

Asked by Leone_300 6 years ago

Answered by ideato 6 years ago

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How do I get HTML5 videos working again?

I updated to Firefox 35 recently and now HTML5 videos will not work. I do have NoScript, but disabling or removing it does not fix the problem. Switching to safe mode doe… (read more)

I updated to Firefox 35 recently and now HTML5 videos will not work. I do have NoScript, but disabling or removing it does not fix the problem. Switching to safe mode does not fix the problem. The problem is solved by using a fresh profile or deleting the prefs.js file, but this is not an option for me, as restoring all my settings from scratch would be a time-consuming hassle I'd rather not deal with.

I know the problem is with the update to Firefox 35 specifically because everything was working fine before and stopped working after. To be absolutely certain, I turned on my laptop that had the same exact extensions and settings imported to it from this computer with FEBE a while back. It was using version 34.0.5 and everything was fine with that version. I tested it with the Vine website, all videos worked. It also downloaded the update to Firefox 35 in the background and as soon as I restarted it, the HTML5 videos were broken.

It's definitely something Mozilla changed but forgot to alter/remove an old setting that's gumming up the works. If I could just figure out which line(s) in the prefs.js file was causing the issue, I would delete/modify it myself in Notepad.

For the record, I already had media.windows-media-foundation.enabled set to false. All videos that use Flash seem to work. I think Vimeo uses HTML5, but it's the only non-Flash video site I could find that still works. Flash and Java have been updated to the latest versions.

Asked by TigerNightmare 6 years ago

Answered by TigerNightmare 6 years ago

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IS there a way to save current Tabs and Groups so that they can be reloaded at anytime ?

My Firefox crashes sometimes, and when I start it up again, my groups and tabs that I had are lost, so I have to recreate them from my History window. IS there a way I ca… (read more)

My Firefox crashes sometimes, and when I start it up again, my groups and tabs that I had are lost, so I have to recreate them from my History window. IS there a way I can Save the groups I have with the tabs inside so that I can retrieve them at some later date. I figure that Firefox does save them each time I close the Browser, so I'm gussing there is a file somewhere that contains this information, if I know what this file is called I could back it up on my regular schedule and retrieve it if I needed to, of course the best alternative would be to have a 'Save Groups" & 'Load Groups' Menu option.

Thanks in advance DayoJ

Asked by DayoJ 6 years ago

Answered by cor-el 6 years ago

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"To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier."

To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier. Then I must click on … (read more)

To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier. Then I must click on Resend or Cancel. Then I must click on Resend or Cancel.

How can I set this automatically resend? please let me know!!

Asked by M_jeshan 6 years ago

Answered by cor-el 6 years ago

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When I click with right mouse button on some facebook videos it doesn't show me options to copy link and etc.

When I click with right mouse button on some facebook videos it doesn't show me options to copy link and etc. It only shows settings for the flash player. how can I fix t… (read more)

When I click with right mouse button on some facebook videos it doesn't show me options to copy link and etc. It only shows settings for the flash player. how can I fix this?

Asked by jackiechan99 6 years ago

Answered by pollti 6 years ago

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how to fix (Error code: ssl_error_bad_cert_domain) on my home page

I have my own website set as my home page but firfox will not load it and gives this message (Error code: ssl_error_bad_cert_domain) I used dreamweaver to build my site a… (read more)

I have my own website set as my home page but firfox will not load it and gives this message (Error code: ssl_error_bad_cert_domain) I used dreamweaver to build my site and it has been operating fine until today

Asked by SorayaConway 6 years ago

Answered by SorayaConway 6 years ago

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How do I run/open Addons?

I just installed a FireFox addon and now I don't know how to run/open it. I searched all over the web, but didn't find any answers. :( -Ole van deursen … (read more)

I just installed a FireFox addon and now I don't know how to run/open it.

I searched all over the web, but didn't find any answers. :(

-Ole van deursen

Asked by Olevandeursen 6 years ago

Answered by the-edmeister 6 years ago

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Why doesn't OpenH264 get installed?

Hi Mozilla Community, I recently deleted Firefox and reinstalled it for some troubleshooting, and now I am facing an issue with the Add-ons. It now says "Will be installe… (read more)

Hi Mozilla Community,

I recently deleted Firefox and reinstalled it for some troubleshooting, and now I am facing an issue with the Add-ons. It now says "Will be installed shortly" for about 2 days already for the add-on "OpenH264 Video Codec provided by Cisco Systems, Inc." (See screenshot). Why doesn't it get installed? And do I need this add-on or is it unnecessary anyway?

Regards, Adrian

Asked by GSicKz 6 years ago

Answered by ideato 6 years ago

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my forward slash key shows an E, how do I get my forward slash back again.

I was typing and hit a key I didnèt mean to and now my symbols are not the right ones as you can see by the comma, in didnèt and my forward slash looks like this € … (read more)

I was typing and hit a key I didnèt mean to and now my symbols are not the right ones as you can see by the comma, in didnèt and my forward slash looks like this €

Asked by jordy123 6 years ago

Answered by cor-el 6 years ago

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Embedded video shows black screen with audio. EDIT: Issue is with HTML5 video.

I was having this issue with various internet videos, but managed to fix it by enabling and then disabling hardware acceleration. Unfortunately, embedded video is still b… (read more)

I was having this issue with various internet videos, but managed to fix it by enabling and then disabling hardware acceleration.

Unfortunately, embedded video is still broken. The controls still pop up, as well as any annotations and pop ups, but the video itself remains black with only audio.

I've tried every fix I could find. Deleting cookies and history, restarting, disabling plugins, and nothing worked. As I said, I managed to fix the problem on the main sites video by adjusting hardware acceleration, but it apparently didn't take on the embedded videos, and there is no option to enable or disable it by left clicking on an embedded video. I still get the menu popup, but it doesn't have a settings tab at all. I've restarted the browser, made sure it was off in the processes tab, and even restarted my PC. Nothing works and embedded video is still a blank screen with audio.

No idea what to do from here. I'm guessing hardware acceleration is the issue, but I don't know how to set that on an embedded video. No option comes up on the left click menu at all. It seems internet video on Firefox is broken and I can't do anything about it in the player menu.

Video plays fine on other browsers without issue, so it's something to do with Firefox for sure. I've got Chrome and IE on my PC and I've tested both and had success with both regular and embedded video. Firefox continues to have the issue though.

Asked by Contrabardus 6 years ago

Answered by philipp 6 years ago