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SIPREC Recording Metadata Model for SRS

SIPREC Recording Metadata Model for SRS. SIPREC Virtual Meeting 28-sep-2010 Paul Kyzivat on behalf of the team. Team: Paul Kyzivat, Ram Mohan R, R Parthasarathi. Agenda. Recording Metadata model for SRS Open Issues Next Steps. Metadata Model. Recording Session Group. 1. 0..* 1..*.

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SIPREC Recording Metadata Model for SRS

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  1. SIPRECRecording Metadata Model for SRS SIPREC Virtual Meeting 28-sep-2010 Paul Kyzivat on behalf of the team Team: Paul Kyzivat, Ram Mohan R, R Parthasarathi

  2. Agenda • Recording Metadata model for SRS • Open Issues • Next Steps

  3. Metadata Model Recording Session Group 1 0..* 1..* Recording Session(RS) 1 1..* 0..* Communication Session(CS) 1 Application Data 1 0..* 0..* Recorded Media Stream 1 1 1..* Received Media Stream 1 1..* 1..* Participant 1

  4. Metadata Model: Recording Session Group • These are optional • Used when multiple RS are related • (e.g. recording initiated by multiple participants.) • Do we need them? • What attributes? type/usage/reason? 1 0..* Recording Session Group ?? Application Data 0..* 1..* Recording Session(RS)

  5. Metadata Model: Recording Session Recording Session Group • 0 or more CS per RS • 0 for persistent recording where there has been no CS • What other attributes are needed? 0..* 1..* 1 0..* Recording Session (RS) • Recording Requestor ID (SRC/SRS) • Recording Reason • Recording Type (Selective/Persistant) Application Data 1..* 0..* Communication Session (CS)

  6. Metadata Model: Communication Session Recording Session (RS) • 1 or more RS per CS • Recording of same CS initiated by multiple SRC • 0 or more Recorded Media Stream per CS • Different media • Starting/stopping media? • What attributes?(This needs attention) 1..* 0..* 1 0..* Communication Session (CS) ?? Application Data 1 0..* Recorded Media Stream

  7. Metadata Model: Recorded Media Stream Communication Session (CS) • 1 or more CS per Recorded Media Stream • Does >1 make sense? • 1 or more Received MS per Recorded MS • Historical tracking of data sources otherwise lost in the mix • Permits the recorded data to be encoded differently from the received media • This may be enough 1 0..* 1 0..* Recorded Media Stream • Type (audio/video/…) • Recorded Encoding • Actual Recorded Data (real data, not meta) Application Data 1 1..* Received Media Stream

  8. Metadata Model: Received Media Stream Recorded Media Stream • 1 or more Participants • When mixing done before delivery to SRS (e.g. conf focus) • Do we need the codec info, distinct from the recorded encoding? • How do we represent codec params (SDPsnipits?) • Media stream reference only needed while recording 1 1..* 1 0..* Received Media Stream • Start Time • End Time • Codec (& codec params) • Media Stream Reference Application Data 1..* 1..* Participant

  9. Metadata Model: Participant Received Media Stream • 1 or more Received Media Streams per Participant • Same participant provides multiple streams (e.g. audio & video) • Is there other data we could plausibly get about a participant? 1..* 1..* 1 0..* Participant • AoR • Name Application Data

  10. Metadata Model: Application Data • Allowing any number of application data objects attached to any of the others. • Any we can eliminate? • We need a type identifier. • What namespace? • What assignment rules? • Do we need a data encoding type separate from type id? • How do we represent / transmit the opaque data? • Text/binary 1 0..* Application Data • Type Identifier • Data Encoding? • Opaque Data

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