[Bug 22137] changes in number of audio tracks during advert insertion

https://www.w3.org/Bugs/Public/show_bug.cgi?id=22137

Aaron Colwell <acolwell@google.com> changed:

           What    |Removed                     |Added
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                 CC|                            |acolwell@google.com

--- Comment #2 from Aaron Colwell <acolwell@google.com> ---
It is not that simple to relax these requirements. Please provide a detailed
description of how the UA is supposed to determine what tracks map to eachother
across these boundaries. Indicate how the UA is supposed to maintain and update
the set of selected/enabled tracks when this happens keeping in mind that on
every boundary the track IDs can be completely different.

Here is an initial set of questions that I think need detailed answers before
we can proceed:
1. What extra information is required to make this work? 
2. Is this information mandated in all the current file formats the spec
supports? If not, what are the fallback behaviors?
3. How can these transitions be achieved with minimal to no burden the web
application? 
4. What is acceptable fallback behavior for implementations that can't fully
support these types of changes in track count?
5. What information in the UA is expected to guide selection of these extra
tracks?

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Received on Friday, 24 May 2013 00:40:41 UTC