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updated from 57 to 63 No longer able to view live Youtube videos

  • 19 replies
  • 1 has this problem
  • Last reply by FredMcD

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I updated from 57 to 63 and am No longer able to view "live" Youtube videos. I can view older videos. your browser does not currently recognize any of the video formats available

I blew away all addons. I turned off Use Hardware acceleration. I installed Flash Player.

No luck. Help

All Replies (19)

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Anyone please

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geakin said

Anyone please

We do not live here.

The people who answer questions here, for the most part, are other Firefox users volunteering their time (like me), not Mozilla employees or Firefox developers.

If you want to leave feedback for Firefox developers, you can go to the Firefox Help menu and select Submit Feedback... or use this link. Your feedback gets collected by a team of people who read it and gather data about the most common issues.

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geakin said

I installed Flash Player.

Youtube currently uses the HTML5 player.

Separate Security Issue: Update your Flash Player or remove it using these links; Uninstall Flash Player | Windows Uninstall Flash Player | Mac

Note: Windows users should download the ActiveX for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the ActiveX.

Flash Player Version: Version Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only> Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers

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Your System Details shows;


YouTube™ Flash® Player 2.0.2 (jid1-HAV2inXAnQPIeA@jetpack)

Please remove this.

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geakin said

  • I updated from 57 to 63 and am No longer able to view "live" YouTube videos...
  • Until someone else replies to your post: (Edit: I see you got more replies.)
  • I have to assume your situation is unique for the moment, unless a flood of other FF 63 users start reporting the the same thing.
  • I'm still on 61.0.2 at the moment and may grab version 63 sooner than later.
  • Meanwhile, any and all details you can provide about your setup, software, hardware, etc with your Desktop/Win-7 system would help.
  • Are your FF Plug-Ins (vs Extensions) in order? (See pics.)

Modified by Pj

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FredMcD said

Your System Details shows; Extensions YouTube™ Flash® Player 2.0.2 (jid1-HAV2inXAnQPIeA@jetpack) Please remove this.

Ah, he didn't 'blow away' every Extension. Do you think that YT Flash is likely the problem preventing his Live YT videos?


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Pj said

Do you think that YT Flash is likely the problem

Since Youtube switched to the HTML5 format, such add-ons have caused problems.

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geakin said

I can view older videos. your browser does not currently recognize any of the video formats available I blew away all addons. I installed Flash Player.

Older videos may work because enough time has passed for the video to be encoded in different formats that you can support. Live videos on YT may need you to fully support of HTML5 player.

Do you get all checks as blue on ?

If two or three checks are red then you may not have the media feature pack installed (for the needed codecs used by HTML5 players) if you have a N or KN edition of Windows 7.

Note the word Addons is a general term that groups together Extensions, Themes (image + complete), Plugins, search engines, dictionaries, language packs. You likely only needed to look at your Extensions.

Youtube has not used the Flash Player Plugin for current videos for a while now.

As said the various extensions (like the YouTube™ Flash® Player you have) that tries to make Youtube use Flash Player Plugin can cause issues so you should disable or rather uninstall it.

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Pj said

* Are your Fx Plug-Ins (vs Extensions) in order? (See pics.)

The "OpenH264 Video Codec" Plugin that comes with Fx is not for the HTML5 players like those used by Youtube and Twitch for example.

Modified by James

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Thank you all for suggestions! I'm going thru your suggestions now. I am using YouTube Al Jazeere Live as my test page...

Removed Flash. No change

I get TWO red checks at H.264 and MSE & H.264 I see it says The HTML5 is used when available.

Cleared cashe. No change.

I'm going thru the Windows Media Feature Pack now. Windows Media play does (did) function. I've never tired to upload videos and I have no desire to.

I want to look at what services I have running. Maybe I have a service shut off that the NEW Firefox requires?

Thank you ALL for your suggestions.

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I recently switched to Verizon WCB6200Q network extender and am seeing heavy drop-outs.

Lenovo Laptop W530 i7-3920XM 2.90GHz-3.10GHz 32GB Memory 64-bit OS Windows 7 SP1

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I see that "Live" Youtube does not play on Internet Exploder 11 either. That could be an old version.

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Disabled hardware acceleration and WebGL per


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Used "Restore Point" to load earlier version of Firefox. I'm now able to view Live video such as YouTube Al Jazeera Live.

The problem IS definitely related to loading the latest version of Firefox.

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If you want to try upgrading again,

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

One issue that seems more common lately is Firefox's Tracking Protection feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: Tracking Protection {web link}

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I lost all of my saved passwords. I DO appreciate the suggestion Fred, but for the time being, I will not trust updates of any sort.

An "upgrade" implies an improvement. What I have now works as compared to what I had for the past 24 hours.

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Firefox 63 enabled support for VP9, which is a codec (?) created by Google. Several users have requested a way to hide this capability from YouTube so they can continue to use older codecs because VP9 is hard on their CPU. So far, the only workaround I've seen is this add-on:

However, if your Firefox can't handle H.264, that add-on won't work for you. You would want YouTube to see that you can handle VP8 but not VP9. I'm not aware of a way currently to thread that needle in Firefox 63. Perhaps others will find one in coming days.

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Updating my last reply, if you want to block WebM/VP9 but be able to play WebM/VP8, I created a userscript based on the h264ify extension that is more targeted. It tested out working in Tampermonkey and Violentmonkey, but not in Greasemonkey.

Step 1 is to get a "monkey" extension that lets you inject snippets of script into web pages:

Step 2 is to install the script from here:

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geakin said

An "upgrade" implies an improvement.

If Mozilla keeps on 'upgrading' Firefox as they have been doing (removing wanted abilities), they are going to end up 'upgrading' every user to other browsers.

geakin said

I lost all of my saved passwords.

What about the rest of your profile? bookmarks, settings . . .

Look on your desktop. Do you see a folder called; Old Firefox?