ISSUE-340: Make clear that the use of the ttp:profile attribute is not required.

profile designator clarification

Make clear that the use of the ttp:profile attribute is not required.

State:

CLOSED

Product:

TTML IMSC 1.0

Raised by:

Frans de Jong

Opened on:

2014-08-27

Description:

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Request
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Section: 5.1 (Text Profile Constraints -> Profile Designator)

Further details should be added to this section to clarify that the association of a documents with a the IMSC profile designator does not require the presence of the designator in the XML document. Possibly some examples how to associate the designator to a document could be given (e.g. through the use of an metadata element not in TTML namespace). It should be made clear that the use of the ttp:profile attribute is not required.

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Background
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IMSC says: A subtitle document conforming to the Text Profile SHALL be
associated with the following profile designator:
(https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml-ww-profiles/ttml-ww-profiles.html#text-profile-designator)

EBU-TT-D does not allow to use the TTML profile element or the profile attribute. The reason why EBU-TT did not include the profile mechanism was that some of the strategies defined by profile mechanisms did not correlate with the EBU-TT requirements, e.g. according to the profile mechanism a processor is required to reject a document if a required feature of an "associated" profile is not supported (regardless if this feature is used in the document or not).

Related Actions Items:

No related actions

Related emails:

1. {agenda} TTWG Meeting 25/9/2014 (from nigel.megitt@bbc.co.uk on 2014-09-24)
2. Re: {minutes} TTWG Meeting 11/9/2014 (from silviapfeiffer1@gmail.com on 2014-09-13)
3. Re: {minutes} TTWG Meeting 11/9/2014 (from nigel.megitt@bbc.co.uk on 2014-09-12)
4. Re: {minutes} TTWG Meeting 11/9/2014 (from silviapfeiffer1@gmail.com on 2014-09-12)
5. Re: {minutes} TTWG Meeting 11/9/2014 (from silviapfeiffer1@gmail.com on 2014-09-12)
6. Re: {minutes} TTWG Meeting 11/9/2014 (from ckennedy@apple.com on 2014-09-11)
7. {minutes} TTWG Meeting 11/9/2014 (from nigel.megitt@bbc.co.uk on 2014-09-11)
8. ACTION-326: Review resolution to issue-340 and add review comments to issue (from sysbot+tracker@w3.org on 2014-09-11)
9. Re: ISSUE-340 (profile designator clarification): Make clear that the use of the ttp:profile attribute is not required. [TTML IMSC 1.0] (from pal@sandflow.com on 2014-09-10)
10. Re: {agenda} TTWG Meeting 11/9/2014 (from glenn@skynav.com on 2014-09-10)
11. {agenda} TTWG Meeting 11/9/2014 (from nigel.megitt@bbc.co.uk on 2014-09-10)
12. {agenda} TTWG Meeting 4/9/2014 (from nigel.megitt@bbc.co.uk on 2014-09-03)
13. ISSUE-340 (profile designator clarification): Make clear that the use of the ttp:profile attribute is not required. [TTML IMSC 1.0] (from sysbot+tracker@w3.org on 2014-08-27)

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