Q:

Html video controll doesn't work on Firefox

I'm trying to display a video on my website. Here is the code: 
<video controls>
  <source src="my_location.mp4" type="video/mp4" />
  <source src="my_location.ogv" type="video/ogv" />
  <source src="my_location.webm" type="video/webm" />
  Your browser does not support this content
</video>

It worked for all browser but the problem is that the pause button on Firefox does not work event if I have the controls attribute on my video and ogv format.
Does someone know why ?

A:

There is no dedicated pause button - instead the play button is toggled with a pause button after it's clicked. See also the example at w3schools.com: 
http://www.w3schools.com/HTML/html5_video.asp 
ADDITION:
This in your code:  
<source src="my_location.ogv" type="video/ogv"   /> 
should be 
<source src="my_location.ogv" type="video/ogg"   /> . 
(ogg instead of ogv on the file type / not on the file extension itself).

