[ogg-dev] HTML5 audio tag

[Frank Barchard]

FWIW chromium does client side range requests that in theory would request
only the audio.  But. the ogg demux reads the other tracks and discards
them.
A use case I've heard is listening to music videos and discard the video...
bit of a bandwidth waste.

On Tue, May 11, 2010 at 10:17 AM, Ralph Giles <giles at thaumas.net> wrote:

> On 11 May 2010 04:24, narendra sisodiya <narendra.sisodiya at gmail.com>
> wrote:
>
> >      It will be very good if HTML5 API specify this. I mean, Say, If we
> use
> > <audio> tag , then It must stream only audio part of the file
> irrespective
> > of the fact that the src field contains a video file.
>
> I don't think that's a practical option, since the server must
> manipulate the file to return an audio-only subset of the data for
> there to be any bandwidth advantage. That's not something that the
> HTML5 specification, which documents browser behaviour, can describe.
>
> Note that it's completely possible to use a server-size module or
> script to do this, using a query url in the HTML5 media element's src
> attribute. It's just part of a custom server config rather than the
> HTML5 API. The Media Fragments Working Group at the W3C is currently
> working on a standardized syntax for this. See
> http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-spec/ if
> you're interested.
>
> FWIW,
>  -r
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