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Re: "WebVTT file using only nested cues"

From: David Singer <singer@apple.com>
Date: Mon, 27 Feb 2012 17:50:02 -0800
Cc: "public-texttracks@w3.org" <public-texttracks@w3.org>
Message-id: <3652D78A-709F-40DD-BEB9-B70C3AC4860A@apple.com>
To: Simon Pieters <simonp@opera.com>

On Jan 27, 2012, at 3:56 , Simon Pieters wrote:

> "A WebVTT file whose cues all have an end time offset x greater than or equal to the end time offsets of all the cues whose start time offsets are less than x is said to be a WebVTT file using only nested cues."
> http://dev.w3.org/html5/webvtt/#webvtt-file-using-only-nested-cues
> I have two problems with this definition. First, it takes considerable mental focus to understand what it means (at least for me). It would be nice if it could be explained more clearly, and/or give examples that match the definition and examples that don't.
> Secondly, the name implies that all cues must be nested, since the file is said to be using "only" nested cues, but this is not the case, so maybe the definition should have a more accurate name. I was considering "WebVTT file with no overlapping cues", but that's not accurate either if nested cues are also overlapping.

I agree, but I wonder what the definition is for, since it isn't used elsewhere?

We might also have a definition of a non-overlapping VTT file (which maybe is obvious)

David Singer
Multimedia and Software Standards, Apple Inc.
Received on Tuesday, 28 February 2012 01:50:36 UTC

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