Re: Proposal for Audio and Video Track Selection and Synchronisation for Media Elements from Tab Atkins Jr. on 2011-03-21 (public-html@w3.org from March 2011)

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Mon, 21 Mar 2011 13:11:54 -0700
To: Mark Watson <watsonm@netflix.com>
Cc: Philip Jägenstedt <philipj@opera.com>, "public-html@w3.org" <public-html@w3.org>
Message-ID: <AANLkTikndBEi=fxfC-xVj67yh-Di60S4Rnaewx3s-Nkw@mail.gmail.com>

On Mon, Mar 21, 2011 at 12:59 PM, Mark Watson <watsonm@netflix.com> wrote:
> For the case where the multiple video tracks are inband tracks in the same resource, would it make sense for the video elements in the same group to more explicitly share a source ? e.g. if no source is specified then a video element is assumed to have the same source as the other elements in the same group (which must then all have the same source) ?

That doesn't seem to make sense.  If you had the exact same @src as
another <video>, then you'd be showing the exact same thing.  The URLs
in Hixie's examples used Media Fragments to target particular tracks
of the same resource.  For most purposes, the two @src values are
completely different resources; it just happens that they're encoded
in the same file, so you can download a single thing and get the
second track for free.

~TJ

Received on Monday, 21 March 2011 20:12:46 UTC