ISSUE-287: Generic ability to tunnel BASE64 encoded binary files for legacy support
Binary Tunnelling
Generic ability to tunnel BASE64 encoded binary files for legacy support
- State:
- CLOSED
- Product:
- TTML2
- Raised by:
- Nigel Megitt
- Opened on:
- 2013-10-23
- Description:
- The EBU has sent a liaison which requests Binary tunnelling, to match the functionality supported in EBU-TT Part 1 [1] via the ebuttm:binaryData element.
[1] http://tech.ebu.ch/docs/tech/tech3350.pdf section 3.1.1.2
The ability to tunnel BASE64 encoded binary files within a TTML document for the purpose of maintaining compatibility with legacy infrastructures, for example EBU Tech 3264 (“STL”) files.
This functionality is broadly similar to the background image tunnelling mechanism in SMPTE-TT however it is intended to carry a different payload.
It is also desired that the binary data be carried not only within metadata in the <head>, which has the effect of requiring any parser to skip to the end of it before being able to start processing the <body>, but also at the end of the document. Some way to implement a "end of the document" section would be useful for this purpose - a <tail> element?
Note that there are also associated metadata elements in EBU-TT Part 1 for carrying the equivalent metadata fields from STL documents. - Related Actions Items:
- No related actions
- Related emails:
- Re: {agenda} TTWG Meeting 2014-12-11 (from nigel.megitt@bbc.co.uk on 2014-12-11)
- {agenda} TTWG Meeting 2014-12-11 (from nigel.megitt@bbc.co.uk on 2014-12-10)
- {minutes} TTWG Meeting 27/11/2014 (from nigel.megitt@bbc.co.uk on 2014-11-27)
- Re: {minutes} TTWG Meeting 13/2/2014 (from tmichel@w3.org on 2014-02-13)
- {minutes} TTWG Meeting 13/2/2014 (from nigel.megitt@bbc.co.uk on 2014-02-13)
- {minutes} TTML Meeting of 24/10/13 (from glenn@skynav.com on 2013-10-24)
- RE: TTML Agenda for 24/10/13 (from mdolan@newtbt.com on 2013-10-23)
- TTML Agenda for 24/10/13 (from nigel.megitt@bbc.co.uk on 2013-10-23)
- ISSUE-287 (Binary Tunnelling): Generic ability to tunnel BASE64 encoded binary files for legacy support [TTML2] (from sysbot+tracker@w3.org on 2013-10-23)
Related notes:
Related to ISSUE-241 https://www.w3.org/AudioVideo/TT/tracker/issues/241
Nigel Megitt, 23 Oct 2013, 14:25:55Nigel: P1
Owner is Andreas + Nigel (i.e. EBU)
Nigel Megitt, 28 Oct 2013, 11:58:32Add support for author supplied embedded data resources and external data resources.
https://dvcs.w3.org/hg/ttml/rev/d16d284100b9
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