Question

so I madean HTML5 video for chrome and firefox … mp4 and .ogv of course
The problem im having is that the video is working on some chrome browsers while it doesnt on others and the video is not showing at all on any firefox browser ( keep in mind that all browsers that were tested on were fully updated meaning they support HTML5 video ) here is my source code

<video id="the-video" width="550px" height="550px" controls>
<source src="videos/intro.mp4"  type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
<source src="videos/intro.ogv"  type='video/ogg; codecs="theora, vorbis"'>

</video>

Answer 1

Firefox doesn’t support H.264, Chrome does but will drop soon.

Anyway you should use Webm video format for HTML 5.