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firefox snap 89.0, to play video, you need to install the required video codecs

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On ubuntu 20.04, the snap version of firefox can't play some videos. Some youtube videos will play but streams won't, and then I get the message "to play video, you need to install the required video codecs". On telegram web and tweetdeck I also get this message while trying to play some video.

Since it's a snap, nothing I do on my system will solve the problem, I cannot install any codecs.

It's firefox 89.0

Chosen solution

Make sure you have the latest FFmpeg and libavcodec packages installed.

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Try $ sudo apt install ubuntu-restricted-extra

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Chosen Solution

Make sure you have the latest FFmpeg and libavcodec packages installed.

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cor-el said

Make sure you have the latest FFmpeg and libavcodec packages installed.

At first I thought the error was on the snap version of firefox, but that runs ok. The problem is on the apt-get version. Given that, installing ffmpeg with sudo apt-get install -y ffmpeg and restarting firefox solved

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