After the last update of Firefox, youtube videos do not play. The answers I've found are not relevant or too complicated.

After the last update of Firefox, youtube videos do not play. The answers I've found are not relevant or too complicated.

Hi Cbella, YouTube is generally used with an HTML5 player, who is a player who does not use a plugin video in MP4 format (for example, it does not use the Flash plugin).

Now, I based this assertion on Windows, Mac may vary.

Could you do two tests for me?

Test #1:

To verify which player you see (which does work), try a right click or Ctrl + click on the YouTube Player and check the "context menu" that rises. If it's the Flash, there will be a menu short, referring to the Flash on the last line. If you do not see that, if you get a regular menu of Firefox, it's probably the HTML5 player.

Are what player you?

Test #2:

If you open the following test page, which videos to play?

http://www.quirksmode.org/HTML5/tests/video.html

  • The video "H.264/MP4" play?
  • The video "WebM" play?

Thank you.

Also, you can check if your Flash plugin is up to date? You can use the site Mozilla Plugin check for this (please ignore the other plug-ins page wants you to update at the moment avoid making the situation more complicated):

https://www.Mozilla.org/pluginCheck/

Tags: Firefox

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