Help getting vide.js to work with IE8 and FF

I’m looking for a little js guidance with this:
http://www.videojs.com/docs/setup/

This code I’m currently using plays the video.js player in IOS, IE10 & Chrome, but not IE8 and FF

   <script _V_.options.flash.swf = "http://theurl.com/video-js/video.js.swf"
</script>

<script videojs.options.flash.swf = "http://theurl.com/video-js/video.js.swf"
</script>

<video id="_1200k.mp4" class="video-js vjs-default-skin"
      controls preload="none" width="640" height="264"
      poster="[var.base_url]/[var.thumb_file]"
      data-setup='{"example_option":true}'>
      <source src="http://theurl.com/uploads/Yr7fGNOH0ell3Ml_1200k.mp4" type='video/mp4' />
</video>

I’d like help getting it to work in IE8 and FF. Any help will be greatly appreciated.

Hi there,

As mentioned in my previous answer, you might also want to consider including a webm version and/or an ogv version of your file, depending on which browsers you want to support.

Currently you are only including your film in mp4 format and Firefox does not support this.
Here’s a compatibility chart: http://diveintohtml5.info/video.html#what-works
To convert mp4 into webm/ogg format I recommend Firefogg

As for IE 8, it doesn’t support the <video> tag, so it will fall back to Flash.
This code is invalid and will very probably be the reason it isn’t working:

<script videojs.options.flash.swf = "http://theurl.com/video-js/video.js.swf"
</script>

If you can provide a link to a page where this isn’t working, then I don’t mind taking a look at you.

Hope that helps.