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The about:config options media.windows-media-foundation.enabled does not exist for me.

Posted

I cannot play instagram videos at all, or twitter videos, tumblr videos or vines on tumblr (vines on the vine site do work). Various other random players which I don't know the name of (such as the first video on this page http://www.rugbydump.com/2016/05/5073/ben-botica-inexplicably-kicks-the-ball-away-as-harlequins-attempt-late-comeback-in-final) don't work either. As the title states, the option media.windows-media-foundation.enabled in about:config doesn't exist, and neither does media.fragmented-mp4.enabled. Changing media.mediasource.mp4.enabled or media.wmf.enabled to false does not fix the problem. I have started Firefox in safe mode, reset it and reinstalled it. I've also downloaded the feature pack for Windows 10. My graphics card drivers, plugins and add-ons are all up to date. Other data given below. This is becoming incredibly frustrating.

I cannot play instagram videos at all, or twitter videos, tumblr videos or vines on tumblr (vines on the vine site do work). Various other random players which I don't know the name of (such as the first video on this page http://www.rugbydump.com/2016/05/5073/ben-botica-inexplicably-kicks-the-ball-away-as-harlequins-attempt-late-comeback-in-final) don't work either. As the title states, the option media.windows-media-foundation.enabled in about:config doesn't exist, and neither does media.fragmented-mp4.enabled. Changing media.mediasource.mp4.enabled or media.wmf.enabled to false does not fix the problem. I have started Firefox in safe mode, reset it and reinstalled it. I've also downloaded the feature pack for Windows 10. My graphics card drivers, plugins and add-ons are all up to date. Other data given below. This is becoming incredibly frustrating.

Modified by 4ltman

Chosen solution

thanks, so firefox depends on the decoders for h264 that your system provides (have to be separately downloaded in windows n versions). i think this one is the newest version that should apply to a fully updated version: https://www.microsoft.com/en-us/download/details.aspx?id=49919 an older download for systems before the november upgrade would be here: https://www.microsoft.com/en-us/download/details.aspx?id=48231

maybe its installation didn't work the first time?

Read this answer in context 1

Additional System Details

Installed Plug-ins

  • Adobe PDF Plug-In For Firefox and Netscape 15.16.20039
  • Battlelog Game Launcher (2.7.1)
  • Battlelog Game Launcher (2.6.2)
  • Google Update
  • Intel web components updater - Installs and updates the Intel web components
  • Intel web components for Intel® Identity Protection Technology
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Next Generation Java Plug-in 11.91.2 for Mozilla browsers
  • The plugin allows you to have a better experience with Microsoft Lync
  • The plugin allows you to have a better experience with Microsoft SharePoint
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • NPWLPG
  • Shockwave Flash 21.0 r0
  • 5.1.41212.0
  • VLC media player Web Plugin
  • iTunes Detector Plug-in

Application

  • Firefox 46.0.1
  • User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0
  • Support URL: https://support.mozilla.org/1/firefox/46.0.1/WINNT/en-US/

Extensions

  • Adblock Plus 2.7.3 ({d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d})
  • Firefox Hello Beta 1.3.2 (loop@mozilla.org)
  • Multi-process staged rollout 1.0 (e10srollout@mozilla.org)
  • Personas Plus 1.7.7 (personas@christopher.beard)
  • Pocket 1.0 (firefox@getpocket.com)
  • Tab Groups 1.0.2 (tabgroups@quicksaver)
  • YouTube™ Flash® Player 1.6.2 (jid1-HAV2inXAnQPIeA@jetpack)
  • Video DownloadHelper 5.6.1 ({b9db16a4-6edc-47ec-a1f4-b86292ed211d}) (Inactive)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: NVIDIA GeForce GTX 980
  • adapterDescription2:
  • adapterDeviceID: 0x13c0
  • adapterDeviceID2:
  • adapterDrivers: nvd3dumx,nvwgf2umx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um,nvwgf2um
  • adapterDrivers2:
  • adapterRAM: 4095
  • adapterRAM2:
  • adapterSubsysID: 31701462
  • adapterSubsysID2:
  • adapterVendorID: 0x10de
  • adapterVendorID2:
  • direct2DEnabled: False
  • direct2DEnabledMessage: [u'']
  • directWriteEnabled: False
  • directWriteVersion: 10.0.10586.0
  • driverDate: 3-21-2016
  • driverDate2:
  • driverVersion: 10.18.13.6472
  • driverVersion2:
  • info: {u'AzureContentBackend': u'cairo', u'AzureCanvasBackend': u'skia', u'AzureFallbackCanvasBackend': u'cairo', u'AzureSkiaAccelerated': 0}
  • isGPU2Active: False
  • numAcceleratedWindows: 0
  • numAcceleratedWindowsMessage: [u'']
  • numTotalWindows: 2
  • supportsHardwareH264: No; Failed to create H264 decoder
  • webglRenderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 980 Direct3D11 vs_5_0 ps_5_0)
  • windowLayerManagerRemote: True
  • windowLayerManagerType: Basic

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
philipp
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5291 solutions 23381 answers

is the issue still reproducible while you run firefox in safemode? (that wasn't clear from your description)

is the issue still reproducible while you run firefox in safemode? (that wasn't clear from your description)

Question owner

Yes, the issue prevails while in safe mode.

Yes, the issue prevails while in safe mode.
philipp
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  • Moderator
5291 solutions 23381 answers

do you get any error message instead of the video playback?

& does it make a difference when you reset all the custom entries in about:config that begin with "gfx.crash-guard.status." and restart afterwards? (supportsHardwareH264: No; Failed to create H264 decoder in your system details would suggest there may be some issues there)

do you get any error message instead of the video playback? & does it make a difference when you reset all the custom entries in about:config that begin with "gfx.crash-guard.status." and restart afterwards? (''supportsHardwareH264: No; Failed to create H264 decoder ''in your system details would suggest there may be some issues there)

Question owner

For twitter videos it gives the error message "This browser does not support video playback." No other video types give an error message. When I click on an instagram video the play button icon disappears but it won't play. For vines on tumblr it will loop but just shows a black image, no audio. For tumblr videos it gives no response at all.

Resetting those entries make no difference.

For twitter videos it gives the error message "This browser does not support video playback." No other video types give an error message. When I click on an instagram video the play button icon disappears but it won't play. For vines on tumblr it will loop but just shows a black image, no audio. For tumblr videos it gives no response at all. Resetting those entries make no difference.
philipp
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  • Moderator
5291 solutions 23381 answers

what status/supported features do you get at this page? https://www.youtube.com/html5

what status/supported features do you get at this page? https://www.youtube.com/html5

Question owner

"H.264" and "MSE & H.264" are not enabled (red ! icon). All others are fine.

"H.264" and "MSE & H.264" are not enabled (red ! icon). All others are fine.
philipp
  • Top 25 Contributor
  • Moderator
5291 solutions 23381 answers

ok, this looks like the root of the issue in a likelihood. are you on a N version of windows 10 & does it say the same in a new profile? Profile Manager - Create, remove, or switch Firefox profiles

ok, this looks like the root of the issue in a likelihood. are you on a N version of windows 10 & does it say the same in a new profile? [[Use the Profile Manager to create and remove Firefox profiles]]

Question owner

It is Windows 10 N. I've created a new profile but I don't know how to check whether it says the same as the firefox profile, I only know how to check for Windows 10 N by going to System>About in settings.

It is Windows 10 N. I've created a new profile but I don't know how to check whether it says the same as the firefox profile, I only know how to check for Windows 10 N by going to System>About in settings.
philipp
  • Top 25 Contributor
  • Moderator
5291 solutions 23381 answers

Chosen Solution

thanks, so firefox depends on the decoders for h264 that your system provides (have to be separately downloaded in windows n versions). i think this one is the newest version that should apply to a fully updated version: https://www.microsoft.com/en-us/download/details.aspx?id=49919 an older download for systems before the november upgrade would be here: https://www.microsoft.com/en-us/download/details.aspx?id=48231

maybe its installation didn't work the first time?

thanks, so firefox depends on the decoders for h264 that your system provides (have to be separately downloaded in windows n versions). i think this one is the newest version that should apply to a fully updated version: https://www.microsoft.com/en-us/download/details.aspx?id=49919 an older download for systems before the november upgrade would be here: https://www.microsoft.com/en-us/download/details.aspx?id=48231 maybe its installation didn't work the first time?

Question owner

Wow, thanks that's fixed it. Yeah I'm not sure what happened originally, I tried downloading that earlier one just a little while ago and it did nothing, but the most recent one has done the job.

Wow, thanks that's fixed it. Yeah I'm not sure what happened originally, I tried downloading that earlier one just a little while ago and it did nothing, but the most recent one has done the job.

Question owner

So Windows 10 has just updated, and as a result the problem has now reoccurred. To anyone else with the issue, wait for the Firefox update then download this https://www.microsoft.com/en-us/download/details.aspx?id=53356

So Windows 10 has just updated, and as a result the problem has now reoccurred. To anyone else with the issue, wait for the Firefox update then download this https://www.microsoft.com/en-us/download/details.aspx?id=53356

Modified by 4ltman

philipp
  • Top 25 Contributor
  • Moderator
5291 solutions 23381 answers

yes, unfortunately the download changes after each major microsoft update. also see our article on the subject for current download links: Fix video and audio playback problems on Firefox for Windows

yes, unfortunately the download changes after each major microsoft update. also see our article on the subject for current download links: [[Fix video and audio playback problems on Firefox for Windows]]
James
  • Moderator
1594 solutions 11232 answers

4ltman said

So Windows 10 has just updated, and as a result the problem has now reoccurred. To anyone else with the issue, wait for the Firefox update then download this

Not a issue for those who do not have a N or KN version of Windows.

''4ltman [[#answer-920230|said]]'' <blockquote> So Windows 10 has just updated, and as a result the problem has now reoccurred. To anyone else with the issue, wait for the Firefox update then download this </blockquote> Not a issue for those who do not have a N or KN version of Windows.