How to set the frame rate of Birdseye Restream to 25fps

[ZhiXiang147]

Hi Eyeryone,

My problem:
I have tried to increase the frame rate of Birdseye to 25fps, but I am unable to achieve it. Does anyone have any solutions to make this work?
I have tried using multiple cameras to capture footage to find my cat at home, synthesized Birdseye, and then re-streamed RTMP via go2rtc.

My config.yaml:
`
mqtt:
enabled: false

    ffmpeg:
      hwaccel_args: preset-vaapi
    
    detectors:
      ov_0:
        type: openvino
        device: GPU
      ov_1:
        type: openvino
        device: GPU
    
    model:
      model_type: yolo-generic
      width: 640
      height: 640
      input_tensor: nchw
      input_dtype: float
      path: /config/model_cache/yolov8n.onnx  #yolov9-s.pt
    
    go2rtc:
      streams:
        stream:
          - "rtsp://127.0.0.1:8554/birdseye"
          - "ffmpeg:stream#push=rtmp://172.18.0.89:1935/stream"
    
      exec_timeout: 30s
    
      api:
        listen: ":1984"
      rtmp:
        listen: ":1935"
      rtsp:
        listen: ":8554"
      log:
        level: info
    
    cameras:
      DahuaIPCA:
        enabled: True
        ffmpeg:
          inputs:
            - path: 
                rtsp://172.18.1.176:554/stream0
              roles:
                - detect
    
        detect:
          enabled: True
          width: 1920
          height: 1080
        objects:
          track:
            - cat
          filters:
            cat:
              min_score: 0.3
    
        record:
          enabled: False
          retain: 
            days: 3
            mode: all 
          alerts:
            retain:
              days: 30
              mode: motion
          detections:
            retain:
              days: 30
              mode: motion
    
        snapshots:
          enabled: False
          clean_copy: True
          timestamp: False
    
        face_recognition:
          enabled: false
    
      DahuaIPCB:
        enabled: True
        ffmpeg:
          inputs:
            - path: 
                rtsp://admin:admin123@172.18.1.254:554/cam/realmonitor?channel=1&subtype=0 
              roles:
                - detect
    
        detect:
          enabled: True
          width: 1920
          height: 1080
    
        objects:
          track:
            - cat
          filters:
            cat:
              min_score: 0.3
    
        record:
          enabled: False  
          retain: 
            days: 3
            mode: all 
          alerts: 
            retain:
              days: 30
              mode: motion
          detections:
            retain:
              days: 30
              mode: motion 
    
        snapshots:
          enabled: False
          clean_copy: True
          timestamp: False
    
        face_recognition:
          enabled: false 
    
    birdseye:
      enabled: True
      restream: True
    
    detect:
      enabled: True
    version: 0.16-2
    camera_groups:
      catlivestudio:
        order: 1
        icon: LuActivity
        cameras:
          - DahuaIPCA
          - DahuaIPCB
          - birdseye
    semantic_search:
      enabled: False
      model_size: small
    
    face_recognition:
      enabled: False
      model_size: small
      detection_threshold: 0.5
      unknown_score: 0.5
      recognition_threshold: 0.5 
      min_area: 200
    lpr:
      enabled: False
    classification:
      bird:
        enabled: False
    
    
    logger:
      default: info 
      logs:
        frigate.output.output: debug 
        frigate.output.birdseye: debug
        frigate.detectors.plugins.onnx: debug
        frigate.detectors.plugins.openvino: debug
        frigate.best_view.selector: debug

`
This is the information about Birdseye on the go2rtc webpage:

[inkeep-ai-assistant[bot]]

The Birdseye restream frame rate cannot be directly configured in Frigate. The available Birdseye configuration options are limited to enabled, restream, width, height, quality, mode, inactivity_threshold, and layout settings(1).

The frame rate of the Birdseye restream is determined by Frigate's internal processing and cannot be set to a specific value like 25fps through the configuration file(1).

If you need to modify the frame rate of the restream, you would need to use go2rtc's FFmpeg transcoding capabilities on the Birdseye stream. You can configure go2rtc to transcode the Birdseye RTSP stream with a specific frame rate by modifying your go2rtc streams configuration(2):

go2rtc:
  streams:
    stream:
      - "ffmpeg:rtsp://127.0.0.1:8554/birdseye#video=h264#hardware#raw=-r 25"
      - "ffmpeg:stream#push=rtmp://172.18.0.89:1935/stream"

(2)

This approach uses go2rtc's FFmpeg source to transcode the Birdseye stream with the -r 25 parameter to set the output frame rate to 25fps(2).

📚 Sources:

1. Full Reference Config
2. Configuring go2rtc

---

Have another question? Just tag @inkeep.

[hawkeye217]

The AI is mostly correct here.

Birdseye is generated from the detect stream of your cameras. The default is 5, and you can increase it to 10 at most, but that will also double CPU usage for the entire processing pipeline.

Increasing it though is not recommended as it will start to impact object detection and generate a lot of CPU usage even when not viewing.

The recommendation is to use go2rtc for viewing your streams if you need high quality/high frame rate video. See the official Live view documentation: https://docs.frigate.video/configuration/live/

[ZhiXiang147]

thank you