1     Definition 2     Functional Requirements 3     Syntax
4     Semantics 5    Conformance Testing 6     Performance Assessment

1      Definition

An Item represented by a series of Audio-Visual Scene Descriptors for a certain duration (from a start Time to an end Time).

2      Functional Requirements

Audio-Visual Event Descriptors contains Audio-Visual Scene Descriptors between two Times.

3      Syntax

https://schemas.mpai.community/OSD/V1.2/data/AudioVisualEventDescriptors.json

4      Semantics

Label Size Description
Header N1 Bytes Audio-Visual Event Descriptors Header
·       Standard 9 Bytes The characters “OSD-AVE-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.
AVEventID N5 Bytes Identifier of the Event.
AVEventSpaceTime 17 Bytes Data about start and end Space-Time.
AVSceneDescriptors[] N6 Bytes Collection of AV Scene Descriptors in Start Time and End Time
·       AVSceneDescriptors N7 Bytes Set of AV Scene Descriptors of IDs.
DescrMetadata N8 Bytes Descriptive Metadata

5     Conformance Testing

A Data instance Conforms with Audio-Visual Event Descriptors (OSD-AVE) V1.2 if:

  1. The Data validates against the Audio-Visual Event Descriptors’ JSON Schema.
  2. All Data in the  Audio-Visual Event Descriptors’ JSON Schema
    1. Have the specified type
    2. Validate against their JSON Schemas
    3. Conform with their Data Qualifiers if present.

6     Performance Assessment