1   Definition

A Data Type including the Objects of an Audio-Visual Scene, Audio-Visual Scenes, and their arrangement in the Scene.

2   Functional Requirements

Audio-Visual Scene Descriptors include Basic Scenes in addition to Objects.

3   Syntax

https://schemas.mpai.community/OSD/V1.1/data/AudioVisualSceneDescriptors.json

https://schemas.mpai.community/OSD/V1.1/data/SpaceTime.json

https://schemas.mpai.community/OSD/V1.1/data/AVBasicSceneDescriptors.json

https://schemas.mpai.community/OSD/V1.1/data/AVSceneDescriptors.json

 

4   Semantics

Label Size Description
Header N1 Bytes
·         Standard-AVScene 9 Bytes The characters “OSD-AVS-”
·         Version N2 Bytes Major version – 1 or 2 characters
·         Dot-separator 1 Byte The character “.”
·         Subversion N3 Bytes Minor version – 1 or 2 characters
MInstanceID N4 Bytes Identifier of M-Instance.
AVBasicSceneDescriptorsID N5 Bytes Identifier of the AV Object.
ObjectCount N6 Bytes Number of Objects in Scene
AVBasicSceneDescriptorsSpaceTime N7 Bytes Data about Time
AVSceneAudioObjects[] N8 Bytes Set of Audio Objects
·         AVSceneAudioObjectID N9 Bytes ID of Attribute of Audio Object
o  AVSceneAudioObjectSpaceTime N10 Bytes ID of Attribute Format of Audio Object
·         AVSceneAudioObjectAttributes[] N11 Bytes Length of Attribute Format Data of Audio Object
o  AVSceneAudioObjectAttributeID N12 Bytes URI of Attribute Format Data of Audio Scene Object
o  AVSceneAudioObjectAttributeFormatID N13 Bytes ID of Attribute Format of Audio Scene Object
o  AVSceneAudioObjectAttributeDataLength N14 Bytes Length of Attribute Format of Audio Object
o  AVSceneAudioObjectAttributeDataURI N15 Bytes URI of Attribute Format Data of Audio Object
AVSceneVisualObjects[] N16 Bytes Set of Visual Objects
·         AVSceneVisualObjectID N17 Bytes ID of Attribute of Visual Object
o  AVSceneVisualObjectSpaceTime N18 Bytes ID of Attribute Format of Visual Object
·         AVSceneVisualObjectAttributes[] N19 Bytes Length of Attribute Format Data of Visual Object
o  AVSceneVisualObjectAttributeID N20 Bytes URI of Attribute Format Data of Visual Object
o  AVSceneVisualObjectAttributeFormatID N21 Bytes ID of Attribute Format of Visual Object
o  AVSceneVisualObjectAttributeDataLength N22 Bytes Length of Attribute Format of Visual Object
o  AVSceneVisualObjectAttributeDataURI N23 Bytes URI of Attribute Format Data of Visual Object
AVSceneAVObjects[] N24 Bytes Set of AV Objects
·         AVSceneAVObjectID N25 Bytes ID of Attribute of AV Scene Object
·         AVSceneAVObjectSpaceTime N26 Bytes ID of Attribute Format of AV Object
·         AVSceneAVObjectAttributes[] N27 Bytes Length of Attribute Format Data of AV Object
o  AVSceneAVObjectAttributeID N28 Bytes URI of Attribute Format Data of AV Object
o  AVSceneAVObjectAttributeFormatID N29 Bytes ID of Attribute Format of AV Object
o  AVSceneAVObjectAttributeDataLength N30 Bytes Length of Attribute Format of AV Object
o  AVSceneAVObjectAttributeDataURI N31 Bytes URI of Attribute Format Data of AV Object
DescrMetadata N32 Bytes Descriptive Metadata

5   Data Formats

No new Data Formats

6   To Respondents

Respondents are invited to:

  1. Comment or elaborate on the Functional Requirements.
  2. Propose extensions to or alternative formats for the Audio-Visual Scene Descriptors.