onvif_capture_frame.py

from onvif import ONVIFCamera
import cv2
import requests
import numpy as np

# Replace with your camera's details
CAMERA_HOST = '192.168.0.189'
CAMERA_PORT = 80
CAMERA_USER = 'admin'
CAMERA_PASS = 'password'

def get_snapshot_uri():
    mycam = ONVIFCamera(CAMERA_HOST, CAMERA_PORT, CAMERA_USER, CAMERA_PASS)
    media_service = mycam.create_media_service()
    profiles = media_service.GetProfiles()
    token = profiles[0].token
    request = media_service.create_type('GetSnapshotUri')
    request.ProfileToken = token
    snapshot_uri = media_service.GetSnapshotUri(request).Uri
    return snapshot_uri

def capture_frame(snapshot_uri):
    response = requests.get(snapshot_uri, auth=(CAMERA_USER, CAMERA_PASS), stream=True)
    if response.status_code == 200:
        img_array = np.asarray(bytearray(response.content), dtype=np.uint8)
        frame = cv2.imdecode(img_array, cv2.IMREAD_COLOR)
        return frame
    else:
        print('Failed to get snapshot')
        return None

def save_frame(frame, filename='snapshot.jpg'):
    cv2.imwrite(filename, frame)

def main():
    snapshot_uri = get_snapshot_uri()
    if snapshot_uri:
        frame = capture_frame(snapshot_uri)
        if frame is not None:
            save_frame(frame)
            print('Snapshot saved as snapshot.jpg')
        else:
            print('Failed to capture frame')
    else:
        print('Failed to get snapshot URI')

if __name__ == "__main__":
    main()