Re: video use-case

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

yes

> 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.

+1

  pa