W3C home > Mailing lists > Public > public-tt@w3.org > January 2013

Re: Re: TTML and aspect ratio

From: Glenn Adams <glenn@skynav.com>
Date: Thu, 31 Jan 2013 07:59:07 -0700
Message-ID: <CACQ=j+cjpHFhi9dOfANcufUs91Ek6XrDzM78HfHXctAW+EDp9w@mail.gmail.com>
To: David Ronca <dronca@netflix.com>
Cc: "public-tt@w3.org" <public-tt@w3.org>
On Thu, Jan 31, 2013 at 7:52 AM, David Ronca <dronca@netflix.com> wrote:

> >btw, SDP-US goes beyond TTML and specifies requirements regarding the
> >relationship between the root container region and the related media
> >object, see R0016 and R0017 [1]
> There is a requirement that the root container must encompass the entire
> video window.  For a 16x9 video window, <ttpCellResolution="32,15"> would
> result in caption area that is stretched horizontally.

Not really. Keep in mind that the concept of cell in TTML does not
translate to anamorphic scaling. Rather, it is simply used as a grid for
resolving location expressions, such as used with tts:origin and tts:extent
on region elements.
Received on Thursday, 31 January 2013 14:59:55 UTC

This archive was generated by hypermail 2.3.1 : Thursday, 5 October 2017 18:24:08 UTC