[Bug 24859] Automatic Video and Audio Track Selection Based on User Preferences and Terminal Characteristics

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24859

--- Comment #3 from Silvia Pfeiffer <silviapfeiffer1@gmail.com> ---
>From what you're saying, I assume you're concerned about audio and video tracks
activated based on
1. Preferences given in-band in the media files
2. User preferences set in the browser


Re 1.
The second paragraph that you are citing covers that use case. It explicitly
says (I only quote the relevant words):

"If the media resource indicates a particular set of audio or video tracks to
enable, then the selected audio tracks must be enabled in the element's
audioTracks object, and, of the selected video tracks, the one that is listed
first in the element's videoTracks object must be selected. All other tracks
must be disabled."


Re 2.
I agree that the spec could be more explicit on this. However, user preferences
are a feature of browsers and are optional - browsers can be implemented
without any user preference settings and would still be conformant to HTML. So,
nothing about user preferences will be normative in the spec. The spec only has
to be accurate in how it reacts to audio or video tracks that have been
activated/deactivated by the browser. I can see how you might want to see this
expressed more explicitly.

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Received on Monday, 3 March 2014 00:12:55 UTC