The descriptor essenceTrackDuration provides a timestamp for the overall length or duration of a track. It represents the track playback time.
XPATH LOCATION:
/ pbcoreDescriptionDocument / pbcoreInstantiation / instantiationEssenceTrack / essenceTrackDuration
USAGE RULES:
Occurs:
1 time or less
May Contain:
Contained by:
Contained with:
[Any elements used MUST appear in this relative order]
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackType
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackIdentifier
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackStandard
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackEncoding
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackDataRate
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackFrameRate
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackPlaybackSpeed
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackSamplingRate
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackBitDepth
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackFrameSize
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackAspectRatio
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackTimeStart
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackDuration
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackLanguage
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackAnnotation
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack/essenceTrackExtension
EXAMPLES:
-
<essenceTrackDuration>00:56:22:13</essenceTrackDuration>
-
<essenceTrackDuration>00:28:44</essenceTrackDuration>
-
<essenceTrackDuration>01;34;28;05</essenceTrackDuration>
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)
