Troubleshooting • Raspberry Pi 5 and USB Camera

Code:

import cv2import timeimport psutildef get_cpu_usage():    # CPU-Auslastung in Prozent    return psutil.cpu_percent(interval=1)def measure_fps(video_source=0):    cap = cv2.VideoCapture(video_source)    cap.set(cv2.CAP_PROP_FRAME_WIDTH, 640)    cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)    cap.set(cv2.CAP_PROP_FPS, 25)    if not cap.isOpened():        print("Error: Cannot open video source.")        return    fps = 0    start_time = time.time()    frame_count = 0    while True:        ret, frame = cap.read()        if not ret:            break        usage = get_cpu_usage()        print(f"Die aktuelle CPU-Auslastung beträgt: {usage:.2f} %")        frame_count += 1        # Calculate FPS every second        elapsed_time = time.time() - start_time        if elapsed_time > 1:            fps = frame_count / elapsed_time            start_time = time.time()            frame_count = 0            print(f"FPS: {fps:.2f}")        # Display the frame        #cv2.imshow('Frame', frame)        if cv2.waitKey(1) & 0xFF == ord('q'):            break    cap.release()    cv2.destroyAllWindows()if __name__ == "__main__":    measure_fps()

Code:

import cv2import psutilfrom flask import Flask, Responseimport numpy as npapp = Flask(__name__)def get_cpu_usage():    # Log CPU usage less frequently, e.g., every 10 seconds    return psutil.cpu_percent(interval=1)def gen_frames():    camera = cv2.VideoCapture(0)        # Set the desired resolution (optional)    camera.set(cv2.CAP_PROP_FRAME_WIDTH, 2048)    camera.set(cv2.CAP_PROP_FRAME_HEIGHT, 1536)    # Reduce JPEG quality to speed up encoding    encode_param = [int(cv2.IMWRITE_JPEG_QUALITY), 50]    while True:        success, frame = camera.read()        height, width, channels = frame.shape        if not success:            break        else:            # Encode the frame in JPEG format with reduced quality            ret, buffer = cv2.imencode('.jpg', frame, encode_param)            frame = buffer.tobytes()            # Yield the frame in the MJPEG stream format            yield (b'--frame\r\n'                   b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n')        camera.release()@app.route('/video_feed')def video_feed():    return Response(gen_frames(),                    mimetype='multipart/x-mixed-replace; boundary=frame')if __name__ == '__main__':    app.run(host='0.0.0.0', port=8000, debug=False, threaded=True)