使用Flask集成时帧到字节导致的OpenCV问题

import cv2
from flask import Flask, Response

app = Flask(__name__)

def generate_frames():
    # 从摄像头或视频文件中读取帧
    cap = cv2.VideoCapture(0)
    
    while True:
        ret, frame = cap.read()
        
        if not ret:
            break
        
        # 将帧转换为字节
        ret, buffer = cv2.imencode('.jpg', frame)
        
        if not ret:
            break
        
        # 将字节流作为生成器的输出
        yield (b'--frame\r\n'
               b'Content-Type: image/jpeg\r\n\r\n' + buffer.tobytes() + b'\r\n')
    
    cap.release()

@app.route('/')
def index():
    return Response(generate_frames(),
                    mimetype='multipart/x-mixed-replace; boundary=frame')

if __name__ == '__main__':
    app.run()