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Browse: Home / v2 / Elements / pbcoreDescriptionDocument / pbcoreInstantiation / instantiationDuration

instantiationDuration

The descriptor instantiationDuration provides a timestamp for the overall length or duration of a time-based media item. It represents the playback time.

XPATH LOCATION:

/ pbcoreDescriptionDocument / pbcoreInstantiation / instantiationDuration

USAGE RULES:

Occurs:

1 time or less

May Contain:

Contained by:

Contained with:

[Any elements used MUST appear in this relative order]

EXAMPLES:

  • <instantiationDuration>00:56:46</instantiationDuration>

VOCABULARIES:

PBCore recommends flexibility in expressing time stamps. Radio producers often prefer the simple HH:MM:SS designation. Television producers prefer the SMPTE time code standards HH:MM:SS:FF. Some multimedia architectures express time in HH:MM:SS.mmm, where the mmm represents milliseconds.

Consequently, the best practice is to match the time stamp designation to your preferred method:

  • HH:MM:SS
  • HH:MM:SS.mmm
  • HH:MM:SS:FF (SMPTE Timecode nondrop frame-NTSC)
  • HH;MM;SS;FF (SMPTE Timecode drop frame-NTSC)

2 responses to “instantiationDuration”

  1. Courtney
    Courtney October 18, 2011 at 7:37 pm |

    Would be good to have annotation attributes on this duration or a durationType to be able to better express estimated durations, exact RT or carrier lengths etc.

  2. Shane Beers
    Shane Beers December 12, 2011 at 3:38 pm |

    Is there any way to simply allow an annotation so the timestamp designation can be specified?

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