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Fedora 19 Firefox youtube error

asked 2012-11-15 21:12:25 -0500

Regentyeti gravatar image

updated 2013-06-03 22:19:17 -0500

Complete newbie here, so I apologize if a solution should be obvious. I'm trying to watch YouTube videos, but I keep getting these two error messages:

Error 1: "**Gnash Error** MediaHandlerGST::createAudioDecoder: Couldn't find a plugin for audio type audio/mpeg!-- MediaHandlerGST::createFlashAudioDecoder: no available flash decoders for codec 10 (Advanced Audio Coding)"
Error 2: "**Gnash Error** Couldn't find a plugin for video type video/x-h264! Please make sure you have gstreamer-ffmpeg installed."

And I can't find that in the add/remove programs menu. I've tried using "Yum install " but it says I need to be logged in as root and I can't figure out how to do that. (so maybe that's my problem).

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Why firefox keep disappearing on fedora 19?

EquipeLinux gravatar imageEquipeLinux ( 2014-03-02 14:55:53 -0500 )edit

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answered 2012-11-16 06:21:01 -0500

secipolla gravatar image

updated 2012-11-16 06:23:39 -0500

You're using the Gnash plugin which is an open-source plugin for Flash videos.

First thing you can do is go to and click on "Join the HTML5 Trial". This will make you use WebM videos from YouTube and avoid Flash ones (except the ones that have ads or that you access from a playlist).

Another thing if you want to keep Gnash is to do what one of the error messages asks: install gstreamer-ffmpeg. For this, first enable repositories:

Then run

su -c 'yum install gstreamer-ffmpeg'

Last but not least, if you prefer you can replace the Gnash plugin for the Adobe Flash plugin. First remove Gnash:

su -c 'yum remove *gnash*'

Then install Flash rpm from

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Asked: 2012-11-15 21:12:25 -0500

Seen: 4,866 times

Last updated: Mar 02 '14