I have problem watching twitter embedded videos. I got this error message: "This browser does not support video playback."
I have Firefox version 43.0.
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It only takes a minute to sign up.Sign up to join this community
You should -
make sure that gstreamer1.0-libav plugin is installed
then in firefox address bar go
mediasource & enable
That should allow playback on twitter as long as the 1st. 2 mentioned below are not enabled or you enable all 3
If you want full coverage in Firefox as seen in https://www.youtube.com/html5, (all 6), then in about:config in addition to above search
media & enable
media.fragmented-mp4.ffmpeg.enabled & needed to not break facebook
As they say proof is in the pudding -
You can use
Pepper Flash in
Pepper Flash is basically Chrome's Flash API. Chrome has this API installed by default (You might notice this when you have a fresh install of Windows/Linux and Chrome doesn't need to install flash while other browsers do).
Here are the steps:
sudo add-apt-repository ppa:nilarimogard/webupd8 sudo apt-get update sudo apt-get install freshplayerplugin
google-chromefrom it's website or use the
chromiumway in the link below (The reason you install Google Chrome is for the
freshplayerpluginto recognize the Pepper Flash in Chrome and load it into Firefox)
Uninstall Linux Flash by doing
sudo apt-get purge flashplugin-installer adobe-flashplugin adobe-flash-properties-gtk adobe-flash-properties-kde
This problem is definitely add-on/extension related.
Restarting with add-ons disabled in Firefox safe mode resolves the issue. Note that simply disabling or removing ad block plus does not work. How: https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
In my case I had flashblock installed and disabling it from firefox addon manager did the trick. as seen below: