Video html5: how to get currently played source

in a <video> tag, how can I know the currently played source URL with JQuery if there are many sources (different codec)?

I tried with the sr开发者_如何学运维c property, but it's empty.

Thanks!

Pv

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The latest version of the HTML5 spec gives the currentSrc property for this purpose. I'm not sure if all browsers support this.