ISSUE-14: How to deal with embedded time stamps
Embedded time stamps
How to deal with embedded time stamps
- State:
- CLOSED
- Product:
- Raised by:
- Davy Van Deursen
- Opened on:
- 2010-01-28
- Description:
- The current spec shortly mentions media with embedded time stamps. However, more information should be provided regarding how to deal with embedded time stamps. Currently, three questions arise:
- is there a different behavior in using NPT vs. SMPTE time addressing and if so, under which circumstances (e.g., are SMPTE time codes embedded in the media resource or not)?
- do we take into account the timing information of the media (usually specified in the underlying container format) when extracting temporal media fragments? For example, suppose a certain track 'a' of a media file ex.mp4 plays from 5s to 10s and from 20s to the end. What will be the result of interpreting ex.mp4#track='a'&t=0,15 ?
- in case of a media fragment Range request, what should be returned in the response header? More specifically, is the instance length optional or mandatory per the Content-Range header syntax?
Further reading:
* initial mail from Werner: http://lists.w3.org/Archives/Public/public-media-fragment/2010Jan/0027.html
* Silvia elaborating on SMPTE time codes: http://lists.w3.org/Archives/Public/public-media-fragment/2010Jan/0059.html
* Raphaël's summary: http://lists.w3.org/Archives/Public/public-media-fragment/2010Jan/0075.html
- Related Actions Items:
- No related actions
- Related emails:
- Media Fragments Working Group: Agenda 09 June, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-06-08)
- Media Fragments Working Group: Agenda 02 June, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-05-31)
- Re: Media Fragments Working Group: Agenda 26 May, Telecon 0900 UTC (from silviapfeiffer1@gmail.com on 2010-05-26)
- Media Fragments Working Group: Agenda 26 May, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-05-25)
- Re: Media Fragments Working Group: Agenda 19 May, Telecon 0900 UTC (from michael.hausenblas@deri.org on 2010-05-19)
- Re: Media Fragments Working Group: Agenda 12 May, Telecon 0900 UTC (from silviapfeiffer1@gmail.com on 2010-05-19)
- RE: Media Fragments Working Group: Agenda 19 May, Telecon 0900 UTC (from erik.mannens@ugent.be on 2010-05-19)
- Media Fragments Working Group: Agenda 19 May, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-05-18)
- Re: Media Fragments Working Group: Agenda 12 May, Telecon 0900 UTC (from michael.hausenblas@deri.org on 2010-05-12)
- Re: Media Fragments Working Group: Agenda 12 May, Telecon 0900 UTC (from silviapfeiffer1@gmail.com on 2010-05-12)
- Media Fragments Working Group: Agenda 12 May, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-05-11)
- Re: Media Fragments Working Group: Agenda 05 May, Telecon 0900 UTC (from michael.hausenblas@deri.org on 2010-05-05)
- RE: Media Fragments Working Group: Agenda 05 May, Telecon 0900 UTC (from davy.vandeursen@ugent.be on 2010-05-04)
- Media Fragments Working Group: Agenda 05 May, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-05-03)
- Media Fragments Working Group: Agenda 28 April, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-04-27)
- Media Fragments Working Group: Agenda 14 April, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-04-12)
- Re: Media Fragments Working Group: Agenda 07 April, Telecon 0900 UTC (from conrad@metadecks.org on 2010-04-07)
- RE: Media Fragments Working Group: Agenda 07 April, Telecon 0900 UTC (from davy.vandeursen@ugent.be on 2010-04-06)
- Re: Media Fragments Working Group: Agenda 07 April, Telecon 0900 UTC (from silviapfeiffer1@gmail.com on 2010-04-06)
- Re: Media Fragments Working Group: Agenda 07 April, Telecon 0900 UTC (from silviapfeiffer1@gmail.com on 2010-04-06)
- Media Fragments Working Group: Agenda 07 April, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-04-06)
- Re: Media Fragments Working Group: Agenda 31 March, Telecon 0900 UTC (from conrad@metadecks.org on 2010-03-31)
- Media Fragments Working Group: Agenda 31 March, Telecon 0900 UTC (from raphael.troncy@cwi.nl on 2010-03-31)
- Re: [ERRATA] Media Fragments Working Group: Agenda 17 March, Telecon *0900 UTC* (from silviapfeiffer1@gmail.com on 2010-03-17)
- RE: Media Fragments Working Group: Agenda 17 March, Telecon 1000 UTC (from davy.vandeursen@ugent.be on 2010-03-16)
- RE: Media Fragments Working Group: Agenda 17 March, Telecon 1000 UTC (from erik.mannens@ugent.be on 2010-03-16)
- Re: [ERRATA] Media Fragments Working Group: Agenda 17 March, Telecon *0900 UTC* (from ylafon@w3.org on 2010-03-16)
- Re: Media Fragments Working Group: Agenda 17 March, Telecon 1000 UTC (from philipj@opera.com on 2010-03-16)
- Re: Media Fragments Working Group: Agenda 17 March, Telecon 1000 UTC (from michael.hausenblas@deri.org on 2010-03-16)
- [ERRATA] Media Fragments Working Group: Agenda 17 March, Telecon *0900 UTC* (from raphael.troncy@cwi.nl on 2010-03-16)
- Media Fragments Working Group: Agenda 17 March, Telecon 1000 UTC (from raphael.troncy@cwi.nl on 2010-03-16)
- RE: Media Fragments Working Group: Agenda 03 March, Telecon 1000 UTC (from erik.mannens@ugent.be on 2010-03-03)
- Re: Media Fragments Working Group: Agenda 03 March, Telecon 1000 UTC (from silviapfeiffer1@gmail.com on 2010-03-03)
- RE: Media Fragments Working Group: Agenda 03 March, Telecon 1000 UTC (from Franck.Denoual@crf.canon.fr on 2010-03-03)
- Media Fragments Working Group: Agenda 03 March, Telecon 1000 UTC (from raphael.troncy@cwi.nl on 2010-03-02)
- Re: Media Fragments Working Group: Agenda 24 February, Telecon 1000 UTC (from tmichel@w3.org on 2010-02-23)
- Media Fragments Working Group: Agenda 24 February, Telecon 1000 UTC (from raphael.troncy@cwi.nl on 2010-02-23)
- Media Fragments Working Group: Agenda 17 February, Telecon 1000 UTC (from Raphael.Troncy@cwi.nl on 2010-02-16)
- ISSUE-14 (davy): How to deal with embedded time stamps (from sysbot+tracker@w3.org on 2010-01-28)
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