Hi

I strongly recommend that you update you copy of Firefox to make sure that you have the latest security and stability fixes as well as new features. You can read more about how to update here.

I hope this helps, but if not, please come back here and we can look into a different solution for you.

Also Adobe now supports Linux as of the current Flash Player 24.0.0.186 Release.

https://get.adobe.com/flashplayer/ https://get.adobe.com/flashplayer/otherversions/

Even though yes you should be able to use the HTML5 player.

Note as of Firefox 50 the libavcodec version older than 54.35.1 are blocked. This is needed to play HTML5 video. https://www.mozilla.org/en-US/firefox/50.0/releasenotes/

You can see what your system supports for HTML5 player at https://www.youtube.com/html5/

Seburo said

Hi I strongly recommend that you update you copy of Firefox to make sure that you have the latest security and stability fixes as well as new features. You can read more about how to update here. I hope this helps, but if not, please come back here and we can look into a different solution for you.

dear Seburo,

i have tried to download and update in firefox 50.01. I did it. But i always see that i still have edition 44.0. Why i cant be "updated" to 50.01? '

James said

Also Adobe now supports Linux as of the current Flash Player 24.0.0.186 Release. https://get.adobe.com/flashplayer/ https://get.adobe.com/flashplayer/otherversions/ Even though yes you should be able to use the HTML5 player. Note as of Firefox 50 the libavcodec version older than 54.35.1 are blocked. This is needed to play HTML5 video. https://www.mozilla.org/en-US/firefox/50.0/releasenotes/ You can see what your system supports for HTML5 player at https://www.youtube.com/html5/

dear james, Ive just downloaded adobe player for linux x64. But the videos still not playing in youtube. Also i cant upadate firefox 44.0 to 50.01. Thanx for your assistnace

The Firefox 44.0 you have is from Ubuntu and separate from the Firefox tarballs from mozilla.org as you can either try to update in your package manager or try to get the version from Mozilla set up.

https://support.mozilla.org/en-US/kb/install-firefox-linux

Hello James, you are correct. I 've just erase firefox 44.0 from ubuntu and re rinstall firefox 50.01 from mozila. everything work now!

Thank you so much.