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I've just set up a laptop with brand new Ubuntu 20.04 and visited Netflix in Firefox.

There was a yellow toaster underneath the address bar stating

You must enable DRM to play some audio or video on this page

So I clicked 'Enable DRM'. Then I saw "Firefox is installing components... please try again later" and after that went away I reloaded Netflix but it still would not play. When I play back video I get Netflix error F7355.

enter image description here

Then it points me to https://help.netflix.com where I can only find information on this error when I have trouble playing back on macOS or Windows. But I don't use those, I use Linux...

I understand that I can probably install Chrome which will Just Work - but I don't use Chrome. It seems like it could work but I'm missing something. What should I do to watch Netflix in Firefox on Linux on Ubuntu 20.04?

MichielB
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    Make sure to follow all the steps in my answer and let me know if it works... – ldias May 08 '20 at 16:09
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    Thanks a lot, this definitely helped. So after the above steps that I got (the DRM popup in Firefox) the DRM settings in the browser were already there and the add-ons installed. After I installed libavcodec-extra I was now also able to play back content! I wonder though, I already chose non-free install in the installation process to make sure my wifi worked. It would have been great if Ubuntu then also installed libavcodec-extra. Watching Netflix is not really an obscure use case. – MichielB May 09 '20 at 09:08
  • I agree.. Glad to help.. – ldias May 09 '20 at 11:48

3 Answers3

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You don't have DRM enabled and thus you are missing Widevine plugin to decode the DRM protected Netflix content.

  1. First make sure you have the media codecs installed

    sudo apt install libavcodec-extra

  2. Then enable DRM:

    Open Firefox and type about:preferences#content in the address bar. Look for Digital Rights Management (DRM) Content field and check the box in front of Play DRM-controlled content.

    enabling DRM on firefox

    This will start to install the Widevine plugin from Google. Depending on your network speed it will take a few minutes to install this add-on.

  3. Make sure that you have the required add-ons:

    Open a new tab in Firefox and type about:addons in the address bar. Make sure that you have Widevine and OpenH264 add-ons installed with ‘Always Active’ mode.

    screenshot

  4. Restart Firefox.

You should know be able to play Netflix via the Firefox web browser.

Pablo Bianchi
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ldias
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For me, the solution was to activate DRM on firefox and install the following package:

sudo apt install libavcodec-extra ffmpeg

And it worked for me.

Pizza
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Rodrigo Fredes
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After trying full afternoon the above and more without result, the following worked for me:

sudo apt update

sudo apt full-upgrade


sudo apt install libwidevinecdm0

I found this here: https://www.linuxuprising.com/2021/03/raspberry-pi-os-gets-official-widevine.html

Joost
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