[whatwg] HTML5 video <source> dimensions and bitrate

Silvia Pfeiffer silviapfeiffer1 at gmail.com
Mon Aug 9 17:05:33 PDT 2010

Have you looked at the @media attribute? I would suggest to put them there.
As that's not currently specified in media queries, you might want to
demonstrate how it could work and make a proposal to extend the media


On Tue, Aug 10, 2010 at 9:00 AM, Zachary Ozer <zach at longtailvideo.com>wrote:

> Hello!
> I'm working on some bandwidth switching logic for the JW Player for
> HTML5. The way that we've implemented our bandwidth switching logic
> relies on knowing both the dimensions of the video as well as it's
> bitrate (for more info on the logic, see our dynamic streaming
> documentation [1]).
> MRSS supports this quite nicely, as their media content elements allow
> for width, height, and bitrate, per our example [2].
> As a result, I was wondering if there's some way to attach metadata
> like the dimensions and bitrate to <source> elements of
> HTMLMediaElements in the DOM. I realize that we could wait for
> metadata to arrive for each source, but it would be nice if it was
> possible to make an intelligent choice before attempting to play all
> of them.
> Best,
> Zach
>  [1] :
> http://www.longtailvideo.com/support/jw-player/jw-player-for-flash-v4/12208/video-delivery-rtmp-streaming#dynamicstreaming
>  [2] :
> http://developer.longtailvideo.com/player/testing/files/bitrates.xml
> --
> Zachary Ozer
> Developer, LongTail Video
> w: longtailvideo.com • e: zach at longtailvideo.com • p: 212.244.0140 •
> f: 212.656.1335
> JW Player  |  Bits on the Run  |  AdSolution
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