Data sources
AXIS Scene Metadata provides several data sources that deliver information about objects in a scene. This section describes the available data sources and where you can access them.
Frame-by-frame object tracking
This source delivers information about all tracked objects in the scene for each video frame. It is produced by the Fusion tracker.
| Topic | Availability | Released | Latest version | Data type | Comments |
|---|---|---|---|---|---|
| com.axis.scene.frame.v1 | MQTT, Device Data Hub, ONVIF RTSP * | 12.8 | 1.0.1 | Frame | First stable release |
| com.axis.analytics_scene_description.v0.beta | MQTT | 0.1-beta | Frame | Deprecated. Superseded by com.axis.scene.frame.v1 |
* ONVIF RTSP stream supports a subset of the data. See ONVIF RTSP for details.
Consolidated object information
This source delivers information about tracked objects when an object's tracking session ends, with one message per object. It also includes an object snapshot if enabled. The data is produced by Track Consolidation.
| Topic | Availability | Released | Latest version | Data type | Comments |
|---|---|---|---|---|---|
| com.axis.scene.object_track.v1 | MQTT, Device Data Hub | 12.8 | 1.0.1 | ObjectTrack | First stable release |
| com.axis.consolidated_track.v1.beta | MQTT | 1.0-beta | Consolidated Track | Deprecated. Superseded by com.axis.scene.object_track.v1 |
Object snapshots
This source delivers image snapshots of tracked objects, with one message containing one snapshot for one tracked object. To enable object snapshots, see the guide. The data is produced by Fusion Tracker.
| Topic | Availability | Released | Latest version | Data type | Producers | Comments |
|---|---|---|---|---|---|---|
| com.axis.scene.object_snapshot.v1 | MQTT, Device Data Hub | 12.8 | 1.0.1 | ObjectSnapshot | Fusion tracker |