Im try to play a video by HTML5 with the follow code on localhost :
<html>
<head>
<meta charset="utf8">
<title>HTML5 <video> content negotiation test</title>
</head>
<body>
</body>
<video src="Firefox.ogv" autoplay="true" controls="true">
Your browser does not support the <code>video</code> element.
</video>
</html>
it work perfectly with Chrome,
http://imageshare.web.id/images/60h5p00ixmetpyerd7w.jpg
but why it not work with firefox
http://imageshare.web.id/images/4bky59ruk8djra8wtmp.jpg
i Host it on IIS7 and this is my web.config
<staticContent>
<mimeMap fileExtension=".mp4" mimeType="video/mp4" />
<mimeMap fileExtension=".ogv" mimeType="video/ogv" />
</staticContent>
It could be a problem with the way your MIME types are set up in your .htaccess file you may need to add the following to enable .ogv to be displayed properly
Firefox tends not to play .ogg video if the mime type is incorrect!