On 07.09.2010 12:52, Philip Jägenstedt wrote:
... IE9, Safari and Chrome ignore Content-Type in a <video> context and rely on sniffing. If you want Content-Type to be respected, convince the developers of those 3 browsers to change. If not, it's quite inevitable that Opera and Firefox will eventually have to follow. ...
We have heard that Safari sniffs for compatibility with content previously consumed by Quicktime, and that IE9 may sniff because they (currently) can't pass the content-type to the decoding machinery (or something like that).
So you really would have to standardize sniffing in the browsers, but also in the components they delegate video display to. Good luck with that.
Best regards, Julian