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HTML 5 videos (like Vine) won't play

Some HTML5 videos won't play in my Firefox browser. This vine for example (https://vine.co/v/b3v5h3Piwt7) only shows up as a static image. I can click the mute/audio butt… (funda kabanzi)

Some HTML5 videos won't play in my Firefox browser.

This vine for example (https://vine.co/v/b3v5h3Piwt7) only shows up as a static image. I can click the mute/audio button though, but it won't play. When I look at the webconsole when I load the page then 2 javascript warnings show up, the first one say that the Mediasource [long url here] can't be encoded and another one says loading of all candidate sources failed. loading media paused.

I'm using Firefox 21.0 and I tried to run Firefox in safe mode with disabled add-ons, and I also tried to reinstall it, but without success.

Thanks in advance.

Asked by Joen7 7 iminyaka edlule

Answered by cor-el 7 iminyaka edlule

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Why is it so difficult to get Firefox to play web videos?

I have developed a very basic opening page for my web site. It contains a 45 second movie. It works on IE, Chrome, and Safari but will not work on Firefox. Why? I have… (funda kabanzi)

I have developed a very basic opening page for my web site. It contains a 45 second movie. It works on IE, Chrome, and Safari but will not work on Firefox. Why?

I have spent numerous hours attempting to try workarounds with no luck. I am considering just putting a statement on my front page that says I cannot make this site work properly with Firefox.

It would seem to be in Firefox's best interest to figure this out and fix it vs being the lone browser out there where basic common video formats do not work well.

Please let me know if there is a very quick workaround to make this work because I am certainly not going to spend any more time trying to figure it out.

Thanks for listening

Asked by anolte 6 iminyaka edlule

Answered by anolte 6 iminyaka edlule

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Firefox error: video format or MME type is not supported

Client said that video cannot load on firefox except other browsers. It shows "Video format or MIME type is not supported". Firefox version is 33.0.3. Video is mp4 forma… (funda kabanzi)

Client said that video cannot load on firefox except other browsers. It shows "Video format or MIME type is not supported". Firefox version is 33.0.3. Video is mp4 format.

Asked by Myat 5 iminyaka edlule

Answered by Myat 5 iminyaka edlule

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Updated to 34.0.5 and now I cannot watch Videos on YouTube anymore. Before the update it worked just fine. Any ideas?

Macbook pro 2011 OS X 10.9.5 Addons: Ghostery Adblock YTcenter Firebug Reddit Enhancement suite Error message in YT-player: An error has occured, please try again later. … (funda kabanzi)

Macbook pro 2011 OS X 10.9.5

Addons: Ghostery Adblock YTcenter Firebug Reddit Enhancement suite

Error message in YT-player: An error has occured, please try again later. Learn more.

Asked by jamafu 5 iminyaka edlule

Answered by guigs 5 iminyaka edlule

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One solution to Flash Plugin hanging or crashing issues.

hey guys, i wasnt sure where i could put this info, i have discovered some info regarding the "FLASH PLAYER PLUGIN." that doesnt seem to be documented on any kb article … (funda kabanzi)

hey guys, i wasnt sure where i could put this info, i have discovered some info regarding the "FLASH PLAYER PLUGIN." that doesnt seem to be documented on any kb article or support thread, so hopefully one of you will be able to help getting this submitted. obviously this wont fix everyone's problem, but it should be included.

THE PROBLEM::

Flash Player Hanging or Crashing (unable to watch flash/video content) Script has become unresponsive error message when trying to view flash/video content

THE SOLUTION:

a possible cause to this problem is that you have lost permissions to the file directory where flash is actually stored. without these permissions you will be unable to properly utilize the flash plugin on firefox.

to fix the problem we will need to update the security settings on the flash directory.

for 32 bit machines: C:\Windows\system32\Macromed\Flash

for 64 bit machines: C:\Windows\SysWOW64\Macromed\Flash

navigate to the \Macromed\ folder and right click on the flash folder and select properties. click on the security tab at the top of this box then on the advanced button at the bottom of this box. after navigating to this screen, you will need to click change permissions. first make sure there is no deny statement which is denying access to this folder, if one exists, remove it. second make sure that the name "Everyone" has the abilty to read and execute, to do this: click on everyone, then edit. next, select: apply any changes to: "This folder, subfolders, and files." this is at the top of the edit box. after you click ok to the changes you made, you will need to enable the option: "Replace all child object permissions with inheritable permissions from this object." now click the apply button, then ok button. now check to see if firefox is working.


if you find that you are unable to change these permissions, then you lost access to the parent folders as well and they are replacing child object permissions. you will need to apply the solution above to the parent folder that is overriding the permissions. this will either be: \system32\ or \SysWOW64\ depending on your machine or possibly even the \Windows\ folder.

If you find that these parent folders indeed had their permissions lost, then you have likely acquired some malware. You should download Malwarebytes Anti-Malware and do an update and full scan.

Asked by Obscvred 5 iminyaka edlule

Answered by FredMcD 5 iminyaka edlule

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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… (funda kabanzi)

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 5 iminyaka edlule

Answered by TigerNightmare 5 iminyaka edlule

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Videos / mp4s will not play in Firefox

Videos, like mp4 Vines, won't play in Firefox. Same with the media files like podcasts in rss feeds. All used to work fine. This is an intermittent problem with Firefox (… (funda kabanzi)

Videos, like mp4 Vines, won't play in Firefox. Same with the media files like podcasts in rss feeds. All used to work fine. This is an intermittent problem with Firefox ( might be due to updates ) but it doesn't happen with IE or Chrome

If i uninstall VLC player or disable the VLC plugin, nothing happens If i have those installed but the VLC plugin is set to " Never activate ", i can right click on the video image, click " Play " and it opens in VLC player and works perfectly. If i have the plugin set to " always activate " then i see a black square and the message " the video can't be played because the file is corrupt "

Windows 8.1, Firefox 35.

This is an issue with Firefox and needs to be resolved.

Asked by Ipcress 5 iminyaka edlule

Answered by Ipcress 5 iminyaka edlule

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Videos don't load

Ever since some update, Firefox won't load Vines or Tumblr videos, but load YouTube videos, Facebook videos, and pretty much everything else. I've disabled hardware accel… (funda kabanzi)

Ever since some update, Firefox won't load Vines or Tumblr videos, but load YouTube videos, Facebook videos, and pretty much everything else. I've disabled hardware acceleration, addons, and tried most (if not every) solution given here.

Asked by dragonkid828 5 iminyaka edlule

Answered by dragonkid828 5 iminyaka edlule

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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… (funda kabanzi)

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 5 iminyaka edlule

Answered by pollti 5 iminyaka edlule

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Youtube Videos Suddenly Stops and Restarts Only in Firefox

Last night around 8pm I watched a Youtube video without a problem, closed my browser and did other things for awhile. When I got back on at about 10pm and tried to watch… (funda kabanzi)

Last night around 8pm I watched a Youtube video without a problem, closed my browser and did other things for awhile. When I got back on at about 10pm and tried to watch another video the video suddenly stopped a few seconds, gave me "An error has occurred" then suddenly the video started again at the point it stopped but now there was a little bracket at the stopping/restart point (see image attachment). This wouldn't be a problem if it happened once in awhile but since last night it happens with EVERY video regardless of length or quality. In fact, sometimes it forces me to watch it on the highest quality and makes the other options unavailable. If I try to refresh it takes a LONG or simply refreshes forever. And heaven forbid I should have any other windows or tabs open when this happens because they'll suddenly stop loading or get REALLY laggy. I have no choice but to watch Youtube in IE which works surprisingly well and doesn't do any of the crap I've just described.

Everything is up-to-date. I have cleared cashe, temp files, cookies and history. I have not downloaded or installed anything in the last 24 hours. I've asked other people who use FF about this and they all say it's fine so I don't know what to do anymore.

Asked by Fyreheart 5 iminyaka edlule

Answered by guigs 5 iminyaka edlule

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On some web sites, the player is covered by . . .

an invisible screen. Sometimes, I can remove it using Inspect Element. For example, on YouTube, the block is coded; <div id="theater-background" class="player-height"… (funda kabanzi)

an invisible screen. Sometimes, I can remove it using Inspect Element. For example, on YouTube, the block is coded;

<div id="theater-background" class="player-height"></div>

After I remove the above, the block is gone. How can I get this to not be there in the first place?

Asked by FredMcD 5 iminyaka edlule

Answered by user1194064 5 iminyaka edlule

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Video Playback issues

Ever since FF 37 was released I have been unable to view most videos on the web with the exception being YouTube It either buffers eternally or simply gives me a black sc… (funda kabanzi)

Ever since FF 37 was released I have been unable to view most videos on the web with the exception being YouTube It either buffers eternally or simply gives me a black screen.

Thanks :3

Asked by CiaranLmore 5 iminyaka edlule

Answered by guigs 5 iminyaka edlule

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Issue with video picture/sound "sync" in Firefox 37.0.1.

So I have been using Firefox to watch various videos on my PC for a while, and never had any issues. Earlier in the week I ran into an issue with the picture on the video… (funda kabanzi)

So I have been using Firefox to watch various videos on my PC for a while, and never had any issues. Earlier in the week I ran into an issue with the picture on the videos I will be watching freezing at a certain point. Usually when this occurs, the sound will continue to run, but the picture on the screen will just stay frozen. And to clarify, it is just the picture in the video that freezes, no issues with Firefox freezing. Also, it is important to note that at times the sound will hop to the end of the video (while the video continues the play at the point it was at), and I have even seen the picture freeze with the sound hopping to the end of the video.

To clarify, when the video picture freezes, there is no way (that I have found at least) to move beyond that point in the video. In essence, the video is useless after this issue pops up: something such as buffering does not solve the issue.

I noticed this issue only after my PC upgraded to Firefox 37.0.1. While I am not 100% certain the issues started after the upgrade, I am fairly certain, as I ran a video in chrome and it worked without any hitches. That led me to believe it is a Firefox issue, hence why I am asking it here. I prefer Firefox to chrome, so I hope someone can help me out in resolving this issue so I can stick with Firefox.

Any remedies?

Thanks in advance for all the help :)

Can I provide any more info to spark some answers? Let me know if I left any gaps that make resolving the issue challenging.

Asked by johnnyjohnny2015 5 iminyaka edlule

Answered by johnnyjohnny2015 5 iminyaka edlule

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Graphical glitches in YouTube HTML5 player

When I've been playing YouTube videos lately, I've noticed that a bunch of black boxes have been appearing over the player interface (The controls below the video) while … (funda kabanzi)

When I've been playing YouTube videos lately, I've noticed that a bunch of black boxes have been appearing over the player interface (The controls below the video) while the video is playing. Unfortunately, I can't provide a good screenshot, as the boxes come and go too quickly for me to get them. This issue still occurs if I restart Firefox in safe mode. I think it started happening with Firefox 37.

Asked by aroskuski 5 iminyaka edlule

Answered by aroskuski 4 iminyaka edlule

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Cannot open mailboxes or compose

Cannot open yahoo or sky inboxes or compose in them when I access them through Firefox. Also have error message on Firefox that an attempt to change my settings has bee… (funda kabanzi)

Cannot open yahoo or sky inboxes or compose in them when I access them through Firefox.

Also have error message on Firefox that an attempt to change my settings has been blocked. Cannot delete it.

Asked by Kenwilson666 5 iminyaka edlule

Answered by Kenwilson666 5 iminyaka edlule

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I am using firefox(37.0.1). from last week I am unable to play any kind of videos esp youtube. I am in a big problem. Please help me out.

I am using firefox(37.0.1). from last week I am unable to play any kind of videos esp youtube. NO system change or installation has been done. Please help me out

Asked by Rks123 5 iminyaka edlule

Answered by guigs 5 iminyaka edlule

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YouTube videos are black when using HTML5 player.

Today when I started up my laptop, Firefox wouldn't play any YouTube video - the audio still works and the preview of the frame when seeking is there, but instead of vide… (funda kabanzi)

Today when I started up my laptop, Firefox wouldn't play any YouTube video - the audio still works and the preview of the frame when seeking is there, but instead of video there is just a black screen. I have NO intention of installing Flash Player. Please help? Thanks in advance.

Asked by username9001 5 iminyaka edlule

Answered by guigs 5 iminyaka edlule