Video WebM will not play in Firefox 5.01. It will work in Chrome.

I just started experimenting with the html5 video tag. My test WebM file plays fine in Chrome. He will not play in Firefox 5.01. My test .ogv file will play well in Firefox 5.01. No idea why?

I tried in 5.0 and 5.01.

The boxes with the big X are explained here for the video Theora (ogg), but should be the same for WebM:

https://developer.Mozilla.org/en/HTML/element/video

Server support

It's worth re-emphasizing for the time being, that if the MIME types for Theora video are not set on the server, the video may not show or show a gray box containing an X (if JavaScript is enabled).

Tags: Firefox

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