使用PiCamera、OpenCV在录制时提取和分析帧

import picamera
import cv2

camera = picamera.PiCamera()

camera.resolution = (640, 480)  # 设置分辨率
camera.framerate = 30  # 设置帧率

fourcc = cv2.VideoWriter_fourcc(*'XVID')  # 视频编码格式
out = cv2.VideoWriter('output.avi', fourcc, 30, (640, 480))  # 输出文件名、编码格式、帧率、分辨率

camera.start_recording('video.h264')  # 开始录制视频
try:
    while True:
        camera.wait_recording(0.1)  # 每隔0.1秒提取一帧
        camera.capture('frame.jpg')  # 保存当前帧为图片
        frame = cv2.imread('frame.jpg')  # 读取图片帧
        # 在这里进行帧的分析和处理
        out.write(frame)  # 将帧写入视频文件
finally:
    camera.stop_recording()  # 停止录制视频
    out.release()  # 释放VideoWriter对象