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[Solved] Why Vimeo Videos are not Playing in Firefox?

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Topics: Tips & Tricks


Vimeo is one of the top video sharing websites after YouTube attracting millions of users worldwide. It’s a site I turn to when I wish to see some tutorials or a product demo.

Many filmmakers, celebrities and lot of startups seem to prefer using Vimeo to promote their products.

Lets get straight into the topic about the issue I was facing in Vimeo site. For a while I have been having this problem of videos on Vimeo being unplayable when using Firefox browser [Browser version: 24.0; OS: Windows XP].

But the very same videos plays flawlessly on other browsers. When using Firefox all I see is the first frame of the video without any player controls thus making it impossible to play. Even embedded Vimeo videos don’t seem to play on Firefox.

Simple search on the web shows that I am not the only one who is facing such a problem. Many people seem to have raised this concern on official Vimeo forums. Here are some suggestions given by the staffs.

1. Disabling add-ons and starting Firefox browser in safe mode.

2. Clearing all cookies and restarting the browser.

None of the above suggestions helped me fix the problem, I even tried via private browsing. So if you are in the same situation go ahead and read on.

Why Vimeo Videos Does Not Play on Firefox?

Some Insights:

In Chrome, Vimeo serves video via HTML5 instead of using Flash but in Firefox it is served using Flash since H.264 video format is not supported in it currently.

Firefox since version 3 started using an approach to isolate certain plugins from the browser process so that crashing of those plugin will not impact the entire process. It’s called out-of-process plugins(OOPP) crash protection.

In our case the culprit seems to be Real Player plugin. Disabling crash protection of it seems to fix the issue.

Vimeo Videos are not Playing in Firefox

How to Resolve this Problem?

1. Type about:config in address bar and hit enter.

2. Click ‘I’ll be careful, I promise!’ button.

3. Type dom.ipc.plugins.enabled

4. If it’s already set to true leave it as it is else double click on it to toggle the value.

5. Now right click, select New->Boolean then in preference name enter dom.ipc.plugins.enabled.nppl3260.dll and click OK then select false as value and press OK again.

vimeo player controls not visible on firefox

6. Close all windows and restart the browser.

7. Go to the concerned video. You should be seeing all player controls and will be able to play the videos unlike before.

You might also be interested in knowing how to allow YouTube videos to be buffered on Pause.

Vimeo videos not working in Firefox Browser

So did the fix work for you? Are you to able to see Vimeo videos again on Firefox? Confused with the instruction or stuck in some step? Please feel free to drop in your queries.

[Hat Tip: JJ333]

24 Comments For This Post I'd Love to Hear Yours!

  1. That fixed it for me! Thanks, I never new about about:config 🙂

  2. Chad Polk says:

    Shunmugha, this is a great fix for me on my machine, but when running a marketing campaign and need the video to play on other users FF browser it doesn’t help. Wish I could find a solution through Vimeo.

    • Chad,

      You are most welcome. Yes it does not! Vimeo should come up with a fix. But you can always mention this article in FAQ section 😉

      Do share this article if it helped you out, cheers!

  3. milda says:

    Sadly didn’t make any difference for me…

  4. Dave Stohler says:

    Didn’t work for me. Sadly, I’ve had to switch to using Opera now. Can’t believe Mozilla won’t come up for a fix for this.

  5. Melora says:

    Having the dom.ipc.plugins.enabled.nppl3260.dll on “false” caused all youtube video’s have their sounds unsynchronized. Turning it back to “true” again fixed this. Sorry, I’m using youtube more than vimeo so it stays on

  6. nemo says:

    Vimeo still doesn’t work for me in Firefox, sorry.

  7. Chris says:

    The nppl3260.dll fix didn’t work for me either. The Vimeo video screen shows as if the video is starting but it stays at 0:00. The video is not paused or anything… it is just not playing in Firefox 33.0 (but it plays in Internet Explorer 11). No matter how many times I push the play/pause button, nothing happens. 🙁

  8. andrew says:

    Thank you! this worked for me, on a mac running Yosemite 10.10.2 and firefox 36.0.1

  9. Doug says:

    This did not fix it for me. I have continually had this problem with FF and Vimeo for
    atleast a year or more. Lost track of how long. I have year old win7 system and high bandwidth. I see vimeo on this system fine in Chrome so it should not be the system or internet connection. Its something with FF. It plays and I hear audio fine but the playing is got a constant shivering or shuttering jerky look to it. Hard to describe.
    Would love to figure it out. Thanks! For now I just use chrome to watch Vimeo films.

  10. Blade says:

    Yosemite 10.10.4 (14E46) & Firefox 39.0
    Did not work 🙁
    Can I undo the change?
    Instructions?

  11. John says:

    dom.ipc.plugins.enabled is not part of my configuration. No joy.

  12. John says:

    Not even close. The line dom.ipc.plugins.enabled doesn’t exist in my config files.

  13. Mihaly says:

    +Shunmugha Sundaram

    Just an observation about your instructions:-

    You say that when adding the new value, ie dom.ipc.plugins.enabled.nppl3260.dll, to add it as a Boolean. Yet your screenshot shows it as a String.

    I’ve tried both but neither worked for me.

    Oh well…

  14. Jason says:

    Worked for me, thank you!

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