使用python降低相机的FPS

import cv2
import time

# 打开相机
cap = cv2.VideoCapture(0)

# 设置相机分辨率
cap.set(cv2.CAP_PROP_FRAME_WIDTH, 640)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)

# 设置目标FPS
target_fps = 10
frame_interval = 1.0 / target_fps

# 记录上一帧的时间
prev_time = time.time()

while True:
    # 读取一帧
    ret, frame = cap.read()
    
    if not ret:
        break
    
    # 显示图像
    cv2.imshow('Frame', frame)
    
    # 计算当前时间
    current_time = time.time()
    
    # 等待到下一帧的时间
    if current_time - prev_time < frame_interval:
        time.sleep(frame_interval - (current_time - prev_time))
    
    # 更新上一帧的时间
    prev_time = time.time()
    
    # 按'q'键退出
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# 释放相机并关闭窗口
cap.release()
cv2.destroyAllWindows()