MPEG-2 TS Closed Caption mapping from Clift, Graham on 2014-05-09 (public-inbandtracks@w3.org from May 2014)

From: Clift, Graham <Graham.Clift@am.sony.com>
Date: Fri, 9 May 2014 17:27:49 +0000
To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>, "public-inbandtracks@w3.org" <public-inbandtracks@w3.org>
Message-ID: <7AA796C6DF5E2D43964EF86070AF33B2B6348D1D@USCULXMSG03.am.sony.com>

The 'Sourcing In-band Media Resource Tracks from Media Containers into HTML' spec seems to imply that CC track description will either be presented to the application as a TextTrack when the captions are not line 21 or as Audio/Video track when they are line 21.

So the question I had is, how does the application set line 21 captions to showing when contained as an audio or video track?

Regards

Graham

Received on Friday, 9 May 2014 17:28:21 UTC