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Re: Re: TTML and aspect ratio

From: David Ronca <dronca@netflix.com>
Date: Thu, 31 Jan 2013 14:52:41 +0000
To: "public-tt@w3.org" <public-tt@w3.org>
Message-ID: <F7DC5134CE82754A878475EEBA450B3B30F408@EXMB105.corp.netflix.com>
>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.  

R0016 - A presentation processor must fix the root container origin so that it corresponds with the top, left corner of the related media object [TTML10SE], Section 2.2.
R0017 - A presentation processor must fix the root container extent so that it corresponds with the extent of the related media object [TTML10SE], Section 2.2.
Received on Thursday, 31 January 2013 14:53:08 GMT

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