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Re: video use-case

From: Pierre-Antoine Champin <swlists-040405@champin.net>
Date: Wed, 01 Oct 2008 16:42:43 +0100
To: Jack Jansen <Jack.Jansen@cwi.nl>
Cc: Media Fragment <public-media-fragment@w3.org>
Message-id: <48E39A73.80803@champin.net>

Jack Jansen a écrit :
> I think you are assuming here that there is still one single unified
> timeline across the whole video, correct?


> That would be the case for the use cases you explicitly mention here,
> but there are other multiplexed videos where this isn't the case, think
> of movies in airline  cut/normal cut/directors cut. This means that
> timestamps become messy: either "00h:02m:00s:00f" becomes ambiguous
> (could be different points depending on track selection), or arithmetic
> on timestamps becomes impossible (depending on track selection
> "00h:02m:00s:00f" may or may not be 60 seconds after "00h:01m:00s:00f".

interesting example, indeed.
But, I would rather consider the different "cuts" to be different videos.

Indeed, the timeline is, in my view, a fundamental aspect of a video.

> I would be happy if we stated somewhere (in
> <http://www.w3.org/2008/WebVideo/Fragments/wiki/Glossary>?) that our
> idea of a video is something with a single unified timeline, as the
> image on the glossay page currently also suggests.


Received on Wednesday, 1 October 2008 15:43:30 UTC

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