Make Firefox ignore web video and display flash

<video controls>
    <source src="movie.mp4" type="video/mp4"/>
    <embed src="Untitled-2.swf" type="application/x-shockwave-flash" width="480" height="270" />
</video>

I thought Firefox would fallback to the Flash if it couldn't play the HTML5 video, but it just displays the HTML5 controls and a blank screen.开发者_运维知识库 Is there a way to force it to ignore the mp4 video source?

I've had issues with Firefox and MP4, it just seems to break when it sees it. It's supposed to ignore it and fallback like you say, but doesn't.

e.g. if I have an OGG video (which FF will play) if it's after the MP4, it doesn't work. Put it before, and it's fine (obviously because it never gets to the MP4).

I know this doesn't help solve your issue though, I don't know any way of getting FF to ignore the MP4 other than browser sniffing and serving it different code (and who wants to do that?)