[ WARN:0@22.973] global D:\a\opencv-python\opencv-python\opencv\modules\videoio\src\cap_msmf.cpp (53

2024-06-17 21:44:41 893 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Python+opencv调用摄像头实现拍照并保存 Python+opencv调用摄像头实现拍照并保存安装 OpenCV库详细源码注意事项安装 OpenCV库 pip install opencv-python 详细源码调用外接摄像头实现拍照功能，并保存至指定的文件下。按 s 拍照并保存，按 q 退出程序 # coding:utf-8 import cv2 cap = cv2.VideoCapture(1, cv2.CAP_DSHOW) flag = cap.isOpened() index = 1 while (flag): ret, fr 阅读详情

代码：

# 通过视频文件或摄像头保存视频
import cv2


fourcc = cv2.VideoWriter_fourcc(*'mp4v')
out = cv2.VideoWriter('D:\webserver\opencv\output.mp4', fourcc, 29.91, (640, 480), True)

# 创建窗口
cv2.namedWindow('v', cv2.WINDOW_NORMAL)
cv2.resizeWindow('v', 640, 480)
# 获取视频文件
# cap = cv2.VideoCapture('1.mp4')
# 获取视频设备，摄像头
cap = cv2.VideoCapture(0)

while True:
    # ret,是否读到视频，frame视频内容
    ret, frame = cap.read()
    if ret is True:
        # 窗口显示视频
        cv2.imshow('v', frame)
        # 写数据
        out.write(frame)
        # 等待键盘
        if cv2.waitKey(1) & 0xFF == ord('q'):
            break
    else:
        break

# 释放资源
cap.release()
out.release()
cv2.destroyAllWindows()

结束时，有个异常：

D:\webserver\opencv\venv\Scripts\python.exe D:\webserver\opencv\saveVideo.py 
[ WARN:0@22.973] global D:\a\opencv-python\opencv-python\opencv\modules\videoio\src\cap_msmf.cpp (539) `anonymous-namespace'::SourceReaderCB::~SourceReaderCB terminating async callback

进程已结束，退出代码为 0

...全文