1      Definition

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

2      Functional Requirements

Audio-Visual Basic Scene Descriptors includes:

  1. The ID of a Virtual Space where the Audio-Visual Basic Scene are is or is intended to be located.
  2. The ID of the Audio-Visual Basic Scene Descriptors.
  3. The number of
    1. Audio Objects in the Audio-Visual Basic Scene.
    2. Visual Objects in the Audio-Visual Basic Scene.
    3. Audio-Visual Objects in the Audio-Visual Basic Scene.
  4. The Audio-Visual Basic Scene Space-Time info.
  5. The Audio Objects including, for each Audio Object:
    1. The Audio Object Space-Time.
    2. The Audio Object.
  6. The Visual Objects including, for each Visual Object:
    1. The Visual Object Space-Time.
    2. The Visual Object.
  7. The Audio-Visual Objects including, for each Audio-Visual Object:
    1. The Audio-Visual Object Space-Time.
    2. The Audio-Visual Object.

3      Syntax

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

4      Semantics

Label Size Description
Header N1 Bytes Audio-Visual Scene Descriptors Header
– Standard-AVScene 9 Bytes The characters “OSD-AVB-V”
– 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 Space and Time
AudioObjectsData[] N8 Bytes Set of Audio Objects
– AudioObject N9 Bytes Audio Object
– AudioObjectSpaceTime N10 Bytes ID of Space-Time of Audio Object
VisualObjectsData[] N13 Bytes Set of Visual Objects
– VisualObject N14 Bytes Visual Object
– VisualObjectSpaceTime N15 Bytes Space-Time of Visual Object
AudioVisualObjectsData[] N18 Bytes Set of Audio-Visual Objects
– AudioVisualObjectID N19 Bytes ID of Audio-Visual Object
– AudioObjectSpaceTime N20 Bytes ID of Space-Time of Audio-Visual Object
DescrMetadata N23 Bytes Descriptive Metadata