[Beta Support]: 0.18.0-Beta1 Exception in thread embeddings_maintainer

[stalakerob]

Describe the problem you are having

Error: Exception in thread embeddings_maintainer. Seems to be related to face detection.

Beta Version

0.18.0-beta1

Issue Category

Object Detection / Detectors

Frigate config file

mqtt:
  enabled: true
  host: 192.168.1.200
  port: 1883
  user: xxxx
  password: xxxx

detectors:
  coral:
    type: edgetpu
    device: usb

objects:
  track:
    - person
    - dog
    - cat
    - bird
    - car

ui:
  time_format: 24hour

snapshots:
  enabled: true
  retain:
    default: 7

semantic_search:
  enabled: true
  model_size: small

# In some cases the recordings files may be deleted but Frigate will not know this has happened.
# Recordings sync can be enabled which will tell Frigate to check the file system and delete any
# db entries for files which don't exist. Use sync_recordings: True to enabled sync.
record:
  enabled: true
#  sync_recordings: true
  alerts:
    retain:
      days: 7
    pre_capture: 3
    post_capture: 3
  detections:
    retain:
      days: 7
    pre_capture: 3
    post_capture: 3
  continuous:
    days: 7
  motion:
    days: 7
birdseye:
  # Optional: Enable birdseye view (default: shown below)
  enabled: true
  # Optional: Restream birdseye via RTSP (default: shown below)
  # NOTE: Enabling this will set birdseye to run 24/7 which may increase CPU usage somewhat.
  mode: continuous

go2rtc:
  streams:
    Garten_Cam:
      - ffmpeg:http://192.168.1.205/flv?port=1935&app=bcs&stream=channel0_main.bcs&user=admin&password=xxxx_xx5

    Garten_Cam_sub:
      - ffmpeg:http://192.168.1.205/flv?port=1935&app=bcs&stream=channel0_sub.bcs&user=admin&password=xxxx_xx5

    Garten_Cam_ext:
      - ffmpeg:http://192.168.1.205/flv?port=1935&app=bcs&stream=channel0_ext.bcs&user=admin&password=xxxx_xx5

    Carport_Cam:
      - ffmpeg:http://192.168.1.204/flv?port=1935&app=bcs&stream=channel0_main.bcs&user=admin&password=xxxx_xx4

    Carport_Cam_sub:
      - ffmpeg:http://192.168.1.204/flv?port=1935&app=bcs&stream=channel0_sub.bcs&user=admin&password=xxxx_xx4

    Carport_Cam_ext:
      - ffmpeg:http://192.168.1.204/flv?port=1935&app=bcs&stream=channel0_ext.bcs&user=admin&password=xxxx_xx4

    WZ_Cam:
      - rtsp://admin:xxxx_xx6@192.168.1.206:554/h264Preview_01_main
    WZ_Cam_sub:
      - rtsp://admin:xxxx_xx6@192.168.1.206:554/h264Preview_01_sub
    Garten_Cam2:
      - ffmpeg:http://192.168.1.208/flv?port=1935&app=bcs&stream=channel0_main.bcs&user=admin&password=xxxx_xx8
    Garten_Cam2_sub:
      - ffmpeg:http://192.168.1.208/flv?port=1935&app=bcs&stream=channel0_sub.bcs&user=admin&password=xxxx_xx8
    Garten_Cam2_ext:
      - ffmpeg:http://192.168.1.208/flv?port=1935&app=bcs&stream=channel0_ext.bcs&user=admin&password=xxxx_xx8

    foscam_c:
      - rtsp://admin:@192.168.1.37:554/videoMain
  webrtc:
    candidates:
      - 192.168.1.244:8555
      - stun:8555

cameras:
  Garten_Cam: # <------ Name the camera
    enabled: true
    motion:
      threshold: 20
      contour_area: 10
      improve_contrast: true
      mask:
        motion_mask_1:
          friendly_name: Motion Mask 1
          enabled: true
          coordinates: 0.708,0.941,1,0.835,1,1,0.709,1
        motion_mask_2:
          friendly_name: Motion Mask 2
          enabled: true
          coordinates: 0.877,0,0.916,0.868,1,0.834,1,0
    ffmpeg:
      hwaccel_args: preset-intel-qsv-h264
      inputs:
        - path: rtsp://127.0.0.1:8554/Garten_Cam # <--- the name here must match the name of the camera in restream
          input_args: preset-rtsp-restream
          roles:
            - record
        - path: rtsp://127.0.0.1:8554/Garten_Cam # <----- The stream you want to use for detection
          input_args: preset-rtsp-restream
          roles:
            - detect
    objects:
      track:
        - person
        - dog
        - cat
        - bird

      filters:
        person:
#          # Optional: minimum width*height of the bounding box for the detected object (default: 0)
          min_area: 60000
#          # Optional: maximum width*height of the bounding box for the detected object (default: 24000000)
#    #      max_area: 100000
#          # Optional: minimum width/height of the bounding box for the detected object (default: 0)
#    #      min_ratio: 0.5
#          # Optional: maximum width/height of the bounding box for the detected object (default: 24000000)
#    #      max_ratio: 2.0
#          # Optional: minimum score for the object to initiate tracking
#          min_score: 0.6
#          # Optional: minimum decimal percentage for tracked object's computed score to be considered a true positive
          threshold: 0.75
#          # Optional: mask to prevent this object type from being detected in certain areas (default: no mask)
#          # Checks based on the bottom center of the bounding box of the object
#    #      mask: 0.000,0.000,0.781,0.000,0.781,0.278,0.000,0.278
##        bird:
##          min_area: 1000
#        cat:
#          threshold: 0.3
#        dog:
#          threshold: 0.3



    detect:
      enabled: true # <---- disable detection until you have a working camera feed

  Garten_Cam2: # <------ Name the camera
    enabled: true
    motion:
      mask:
        motion_mask_1:
          friendly_name: Motion Mask 1
          enabled: true
          coordinates: 0.695,0.948,0.699,0.981,1,0.984,0.995,0.945
      threshold: 25
      contour_area: 10
      improve_contrast: true
    ffmpeg:
      hwaccel_args: preset-intel-qsv-h264
      inputs:
        - path: rtsp://127.0.0.1:8554/Garten_Cam2 # <--- the name here must match the name of the camera in restream
          input_args: preset-rtsp-restream
          roles:
            - record
        - path: rtsp://127.0.0.1:8554/Garten_Cam2_sub # <----- The stream you want to use for detection
          input_args: preset-rtsp-restream
          roles:
            - detect
    objects:
      track:
        - person
        - dog
        - cat
        - bird

      filters:
        person:
          threshold: 0.75
        cat:
          threshold: 0.3
        dog:
          threshold: 0.3


    detect:
      enabled: true # <---- disable detection until you have a working camera feed
#    live:
#      stream_name: Garten_Cam2_ext

  Carport_Cam: # <------ Name the camera
    enabled: true
    motion:
      mask:
        motion_mask_1:
          friendly_name: Motion Mask 1
          enabled: true
          coordinates: 1,0.948,1,1,0.694,1,0.695,0.942
      threshold: 20
      contour_area: 10
      improve_contrast: 'true'
    ffmpeg:
      hwaccel_args: preset-intel-qsv-h264
      inputs:
        - path: rtsp://127.0.0.1:8554/Carport_Cam # <--- the name here must match the name of the camera in restream
          input_args: preset-rtsp-restream
          roles:
            - record
        - path: rtsp://127.0.0.1:8554/Carport_Cam_sub # <----- The stream you want to use for detection
          input_args: preset-rtsp-restream
          roles:
            - detect
    objects:
      track:
        - person
        - dog
        - cat
        - bird
        - car
      filters:
        person:
          threshold: 0.75
        car:
          mask:
            object_mask_1:
              friendly_name: Object Mask 1 (car)
              enabled: true
              coordinates: 
                0,1,0.686,1,0.686,0.926,0.804,0.93,0.793,0.222,0,0.214
        dog:
          mask:
            object_mask_a515587f:
              friendly_name: Objektmaske 2 (Hund)
              enabled: true
              coordinates: 0.505,0.193,0.589,0.558,0.748,0.561,0.732,0.259
    detect:
      enabled: true # <---- disable detection until you have a working camera feed
#    live:
#      stream_name: Carport_Cam_ext
    review:
      alerts:
        required_zones:
          - Parking_Zone
      detections:
        required_zones:
          - Parking_Zone
    zones:
      Parking_Zone:
        coordinates: 0,0,0,0.555,0.904,0.561,0.738,0
        loitering_time: 0
        inertia: 3
  WZ_Cam: # <------ Name the camera
    enabled: true
#    genai: # <- enable/disable GenAI for your indoor camera
#      enabled: true
    motion:
      mask:
        motion_mask_1:
          friendly_name: Motion Mask 1
          enabled: true
          coordinates: 640,322,438,319,441,352,640,352,640,352
    ffmpeg:
      hwaccel_args: preset-intel-qsv-h264
      inputs:
        - path: rtsp://127.0.0.1:8554/WZ_Cam # <--- the name here must match the name of the camera in restream
          input_args: preset-rtsp-restream
          roles:
            - record
        - path: rtsp://127.0.0.1:8554/WZ_Cam # <----- The stream you want to use for detection
          input_args: preset-rtsp-restream
          roles:
            - detect
    objects:
      track:
        - person
      filters:
        person:
          # Optional: minimum width*height of the bounding box for the detected object (default: 0)
    #      min_area: 200000
          # Optional: maximum width*height of the bounding box for the detected object (default: 24000000)
    #      max_area: 100000
          # Optional: minimum width/height of the bounding box for the detected object (default: 0)
    #      min_ratio: 0.5
          # Optional: maximum width/height of the bounding box for the detected object (default: 24000000)
    #      max_ratio: 2.0
          # Optional: minimum score for the object to initiate tracking
          min_score: 0.5
          # Optional: minimum decimal percentage for tracked object's computed score to be considered a true positive
          threshold: 0.75
    detect:
      enabled: true # <---- disable detection until you have a working camera feed
#    live:
#      stream_name: WZ_Cam_sub

  foscam_c:
    enabled: true
    ffmpeg:
      hwaccel_args: preset-intel-qsv-h264
      inputs:
        - path: rtsp://127.0.0.1:8554/foscam_c
          roles:
            - record
    detect:
      enabled: false
    live:
      streams:
        Stream 1: foscam_c
    friendly_name: Foscam_C
camera_groups:
  Garten:
    order: 1
    icon: LuVideo
    cameras:
      - Garten_Cam
      - Garten_Cam2
version: 0.18-0
detect:
  enabled: true
face_recognition:
  enabled: true
  model_size: large
lpr:
  enabled: false
#classification:
#  bird:
#    enabled: true
classification:
  custom:
    Terrassentür:
      enabled: true
      name: Terrassentür
      threshold: 0.7
      state_config:
        cameras:
          WZ_Cam:
            crop:
              - 0.2284225334850856
              - 0.3392017256624069
              - 0.28645082093196855
              - 0.44236312556797663
        motion: true
        interval: 10
genai:
  newKey:
    api_key: 
      xxxx
    model: gpt-4o-mini
    provider: openai
    roles: []

Relevant Frigate log output

2026-07-16 08:47:33.767830001  [INFO] Preparing Frigate...
2026-07-16 08:47:34.162638057  [INFO] Starting Frigate...
2026-07-16 08:47:38.189185667  [2026-07-16 08:47:38] frigate.util.config            INFO    : Checking if frigate config needs migration...
2026-07-16 08:47:38.225186706  [2026-07-16 08:47:38] frigate.util.config            INFO    : frigate config does not need migration...
2026-07-16 08:47:38.498325330  [2026-07-16 08:47:38] frigate.util.services          INFO    : Automatically detected vaapi hwaccel for video decoding
2026-07-16 08:47:38.509458609  [2026-07-16 08:47:38] frigate.config.config          INFO    : detect.width and detect.height not set for Garten_Cam, probing detect stream to determine resolution.
2026-07-16 08:47:44.447791406  [2026-07-16 08:47:44] frigate.config.config          INFO    : detect.width and detect.height not set for Garten_Cam2, probing detect stream to determine resolution.
2026-07-16 08:47:50.453735744  [2026-07-16 08:47:50] frigate.util.services          INFO    : ffprobe timed out while probing rtsp://127.0.0.1:8554/Garten_Cam2_sub (transport=default)
2026-07-16 08:47:55.026008008  [2026-07-16 08:47:55] frigate.config.config          INFO    : detect.width and detect.height not set for Carport_Cam, probing detect stream to determine resolution.
2026-07-16 08:48:01.035109115  [2026-07-16 08:48:01] frigate.util.services          INFO    : ffprobe timed out while probing rtsp://127.0.0.1:8554/Carport_Cam_sub (transport=default)
2026-07-16 08:48:07.048206104  [2026-07-16 08:48:07] frigate.util.services          INFO    : ffprobe timed out while probing rtsp://127.0.0.1:8554/Carport_Cam_sub (transport=tcp)
2026-07-16 08:48:07.057115095  [2026-07-16 08:48:07] frigate.config.config          INFO    : detect.width and detect.height not set for WZ_Cam, probing detect stream to determine resolution.
2026-07-16 08:48:11.012892703  [2026-07-16 08:48:11] frigate.config.config          INFO    : detect.width and detect.height not set for foscam_c, probing detect stream to determine resolution.
2026-07-16 08:48:14.547913333  [2026-07-16 08:48:14] frigate.app                    INFO    : Starting Frigate (0.18.0-5f6043a)
2026-07-16 08:48:14.638230257  [2026-07-16 08:48:14] peewee_migrate.logs            INFO    : Starting migrations
2026-07-16 08:48:14.639415311  [2026-07-16 08:48:14] peewee_migrate.logs            INFO    : There is nothing to migrate
2026-07-16 08:48:14.680516803  [2026-07-16 08:48:14] frigate.app                    INFO    : Recording process started: 893
2026-07-16 08:48:14.709972133  [2026-07-16 08:48:14] frigate.app                    INFO    : Review process started: 906
2026-07-16 08:48:14.711944070  [2026-07-16 08:48:14] frigate.app                    INFO    : go2rtc process pid: 119
2026-07-16 08:48:14.965147393  [2026-07-16 08:48:14] frigate.app                    INFO    : Embedding process started: 916
2026-07-16 08:48:15.028421840  [2026-07-16 08:48:15] frigate.detectors.plugins.edgetpu_tfl INFO    : Attempting to load TPU as usb
2026-07-16 08:48:15.059284598  [2026-07-16 08:48:15] frigate.app                    INFO    : Output process started: 968
2026-07-16 08:48:15.127694297  [2026-07-16 08:48:15] frigate.audio_manager          INFO    : Audio processor started (pid: 994)
2026-07-16 08:48:15.332210484  [2026-07-16 08:48:15] frigate.comms.dispatcher       INFO    : Turning off recordings for WZ_Cam
2026-07-16 08:48:15.334294144  [2026-07-16 08:48:15] frigate.comms.dispatcher       INFO    : Restored runtime state: WZ_Cam.recordings=OFF
2026-07-16 08:48:15.341390958  [2026-07-16 08:48:15] frigate.api.fastapi_app        INFO    : Starting FastAPI app
2026-07-16 08:48:16.038085389  [2026-07-16 08:48:16] frigate.camera.maintainer      INFO    : Camera processor started for Garten_Cam: 1061
2026-07-16 08:48:16.176645061  [2026-07-16 08:48:16] frigate.camera.maintainer      INFO    : Capture process started for Garten_Cam: 1128
2026-07-16 08:48:16.317470128  [2026-07-16 08:48:16] frigate.camera.maintainer      INFO    : Camera processor started for Garten_Cam2: 1211
2026-07-16 08:48:16.359712669  [2026-07-16 08:48:16] frigate.camera.maintainer      INFO    : Capture process started for Garten_Cam2: 1276
2026-07-16 08:48:17.526492509  [2026-07-16 08:48:17] frigate.camera.maintainer      INFO    : Camera processor started for Carport_Cam: 1353
2026-07-16 08:48:17.644383699  INFO: Created TensorFlow Lite XNNPACK delegate for CPU.
2026-07-16 08:48:17.647412901  [2026-07-16 08:48:17] frigate.detectors.plugins.edgetpu_tfl INFO    : TPU found
2026-07-16 08:48:17.779150078  [2026-07-16 08:48:17] frigate.api.fastapi_app        INFO    : FastAPI started
2026-07-16 08:48:17.779657429  [2026-07-16 08:48:17] frigate.camera.maintainer      INFO    : Capture process started for Carport_Cam: 1435
2026-07-16 08:48:17.836342030  [2026-07-16 08:48:17] frigate.camera.maintainer      INFO    : Camera processor started for WZ_Cam: 1525
2026-07-16 08:48:17.886115334  [2026-07-16 08:48:17] frigate.api.auth               INFO    : Anonymous user access from 192.168.1.95 ua=Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0
2026-07-16 08:48:17.896979421  [2026-07-16 08:48:17] frigate.camera.maintainer      INFO    : Capture process started for WZ_Cam: 1588
2026-07-16 08:48:17.949883874  [2026-07-16 08:48:17] frigate.camera.maintainer      INFO    : Camera processor started for foscam_c: 1695
2026-07-16 08:48:18.038605852  [2026-07-16 08:48:18] frigate.camera.maintainer      INFO    : Capture process started for foscam_c: 1873
2026-07-16 09:14:10.440237458  loading data from : /config/model_cache/facedet/landmarkdet.yaml
2026-07-16 09:14:10.441002323  Exception in thread embeddings_maintainer:
2026-07-16 09:14:10.441004695  Traceback (most recent call last):
2026-07-16 09:14:10.441006050    File "/usr/lib/python3.11/threading.py", line 1038, in _bootstrap_inner
2026-07-16 09:14:10.441010307      self.run()
2026-07-16 09:14:10.441012047    File "/opt/frigate/frigate/embeddings/maintainer.py", line 290, in run
2026-07-16 09:14:10.441013129      self._process_updates()
2026-07-16 09:14:10.441042464    File "/opt/frigate/frigate/embeddings/maintainer.py", line 508, in _process_updates
2026-07-16 09:14:10.441044263      processor.process_frame(data, yuv_frame)
2026-07-16 09:14:10.441045659    File "/opt/frigate/frigate/data_processing/real_time/face.py", line 291, in process_frame
2026-07-16 09:14:10.441047296      res = self.recognizer.classify(face_frame)
2026-07-16 09:14:10.441048325            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-16 09:14:10.441076659    File "/opt/frigate/frigate/data_processing/common/face/model.py", line 415, in classify
2026-07-16 09:14:10.441078091      blur_reduction = self.get_blur_confidence_reduction(face_image)
2026-07-16 09:14:10.441079732                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-16 09:14:10.441081099    File "/opt/frigate/frigate/data_processing/common/face/model.py", line 121, in get_blur_confidence_reduction
2026-07-16 09:14:10.441102378      variance = cv2.Laplacian(input, cv2.CV_64F).var()
2026-07-16 09:14:10.441103646                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-16 09:14:10.441105345  cv2.error: OpenCV(4.11.0) /io/opencv/modules/imgproc/src/deriv.cpp:792: error: (-215:Assertion failed) !_src.empty() in function 'Laplacian'
2026-07-16 09:14:10.441106255  
2026-07-16 09:14:10.441854237  [2026-07-16 09:14:10] frigate.embeddings             ERROR   : Embeddings maintainer thread exited unexpectedly
2026-07-16 09:14:15.408843131  [2026-07-16 09:14:15] frigate.watchdog               WARNING : Process embeddings (PID 916) exited with code 1
2026-07-16 09:14:15.777858077  [2026-07-16 09:14:15] frigate.watchdog               INFO    : Restarted embeddings (PID 99854)

Relevant go2rtc log output (if applicable)

No response

Install method

Docker Compose

docker-compose file or Docker CLI command

version: "3.9"
services:
  frigate:
    container_name: frigate
    privileged: true # this may not be necessary for all setups
    restart: unless-stopped

    image: ghcr.io/blakeblackshear/frigate:0.18.0-beta1
    cap_add:
      - SYS_PTRACE
    shm_size: "512mb" # update for your cameras based on calculation above
    devices:
      - /dev/bus/usb:/dev/bus/usb  # Passes the USB Coral, needs to be modified for other versions
#      - /dev/dri/renderD128:/dev/dri/renderD128 # For intel hwaccel, needs to be updated for your hardware
      - /dev/dri:/dev/dri      
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - /media/frigate:/config
      - /media/frigate/storage:/media/frigate
      - type: tmpfs # Optional: 2GB of memory, reduces SSD/SD Card wear
        target: /tmp/cache
        tmpfs:
          size: 2000000000
    ports:
      - "1984:1984"
      - "5000:5000"
      - "8554:8554" # RTSP feeds
      - "8555:8555/tcp" # WebRTC over tcp
      - "8555:8555/udp" # WebRTC over udp
    environment:
      FRIGATE_RTSP_PASSWORD: "xxxx"
      PLUS_API_KEY: xxxx

Operating system

Debian

CPU / GPU / Hardware

Intel N100 with integrated Gfx

Screenshots

No response

Steps to reproduce

No response

Any other information that may be helpful

No response

[NickM-27]

Thanks, this will be fixed in the next build