[Support]: Frigate MQTT Events - Can't figure out UPDATE events

[lavinir]

Describe the problem you are having

Hey all,
I'm trying to get proper Home Assistant notifications only for an actual event that was caught in the camera (as close to real time as possible). In theory I don't need to notify at all about UPDATE events except that this seems to be an issue for Cars as from what I could tell if a Car in the driveway is stationary and is tracked, once it starts moving again it will register as an UPDATE not a NEW event.
I tried parsing the UPDATE event for some clue as to how I can ignore 'none new' updates, and am filtering on
Stationary: False and Entered_Zones: [Relevant Zone] but I can still get an update about an event that occurred an hour ago where the "Before" would show no zones and the "After" payload will show the Relevant Zone.

What is the proper way to filter these out ?

Version

0.13.1-34FB1C2

Frigate config file

detect:
      width: 640
      height: 480
      fps: 7
    objects:
      track:
        - person
        - car
        - bicycle
        - motorcycle
    zones:
      car_entrance:
        coordinates: 494,348,0,351,0,320,475,306
        objects:
          - car
          - bicycle
          - motorcycle
      gate_zone:
        coordinates: 0,480,56,358,640,342,640,480
        objects:
          - person
    record:
        events:
          pre_capture: 5
          post_capture: 5
          required_zones:
            - gate_zone
            - car_entrance
    snapshots:
      required_zones:
        - gate_zone
        - car_entrance

Relevant log output

Example MQTT Event for an UPDATE that occurs an hour after the event took place:

{
    "topic": "frigate/events",
    "payload": {
        "before": {
            "id": "1708769658.573276-b5fns4",
            "camera": "video_doorbell",
            "frame_time": 1708773809.192199,
            "snapshot": {
                "frame_time": 1708771860.353668,
                "box": [
                    222,
                    227,
                    493,
                    464
                ],
                "area": 64227,
                "region": [
                    0,
                    0,
                    788,
                    788
                ],
                "score": 0.83203125,
                "attributes": []
            },
            "label": "car",
            "sub_label": null,
            "top_score": 0.84375,
            "false_positive": false,
            "start_time": 1708769658.573276,
            "end_time": null,
            "score": 0.7265625,
            "box": [
                218,
                223,
                490,
                448
            ],
            "area": 61200,
            "ratio": 1.208888888888889,
            "region": [
                168,
                160,
                488,
                480
            ],
            "stationary": false,
            "motionless_count": 1,
            "position_changes": 7,
            "current_zones": [],
            "entered_zones": [],
            "has_clip": false,
            "has_snapshot": false,
            "attributes": {},
            "current_attributes": []
        },
        "after": {
            "id": "1708769658.573276-b5fns4",
            "camera": "video_doorbell",
            "frame_time": 1708773815.914088,
            "snapshot": {
                "frame_time": 1708771860.353668,
                "box": [
                    222,
                    227,
                    493,
                    464
                ],
                "area": 64227,
                "region": [
                    0,
                    0,
                    788,
                    788
                ],
                "score": 0.83203125,
                "attributes": []
            },
            "label": "car",
            "sub_label": null,
            "top_score": 0.84375,
            "false_positive": false,
            "start_time": 1708769658.573276,
            "end_time": null,
            "score": 0.6171875,
            "box": [
                233,
                230,
                487,
                319
            ],
            "area": 22606,
            "ratio": 2.853932584269663,
            "region": [
                231,
                0,
                551,
                320
            ],
            "stationary": false,
            "motionless_count": 1,
            "position_changes": 7,
            "current_zones": [
                "car_entrance"
            ],
            "entered_zones": [
                "car_entrance"
            ],
            "has_clip": true,
            "has_snapshot": true,
            "attributes": {},
            "current_attributes": []
        },
        "type": "update"
    },
    "qos": 0,
    "retain": false,
    "_msgid": "d8b4505e456d4455"
}

FFprobe output from your camera

[Not Relevant]

Frigate stats

No response

Operating system

HassOS

Install method

Docker Compose

Coral version

CPU (no coral)

Network connection

Mixed

Camera make and model

Reolink Video Doorbell

Any other information that may be helpful

No response

[NickM-27]

this looks like an issue with the way the zones are laid out, the box is almost the same but isn't considered in a zone until this update which is what is causing issues

[lavinir]

Thanks for the reply. Not sure I completely understand. There were previous UPDATE events showing the Zone in Entered Zones.
What would trigger another one if the car has not moved in that time ?

[NickM-27]

updates can be sent when an object is detected, enters a zone, becomes stationary, once per minute while the object is stationary, when it becomes active, and when it stops being detected