import cv2 camera_path = 0 #0自带摄像头 1外接摄像头 capture = cv2.VideoCapture(camera_path) #初始化播放器 流媒体 fourcc = cv2.VideoWriter_fourcc('D','I','V','X') video_writer = cv2.VideoWriter("image/myself.mp4", fourcc, 25, (960,540)) while True: flag, frame = capture.read() if flag is False: continue frame = cv2.resize(frame,(960,540)) # frame = cv2.flip(frame,0)#翻转 video_writer.write(frame) cv2.namedWindow("video",0) cv2.imshow("video", frame) key = cv2.waitKey(25) if key == 27: video_writer.release() break 如何将这串代码放入上面代码的打开摄像头

如果你想将上面的代码与之前的视频播放器代码结合起来，可以将这段代码放入到play()方法中，用于打开摄像头并将视频流保存到文件中。

以下是修改后的代码示例：

import sys
import cv2
from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget, QVBoxLayout, QLabel, QPushButton, QFileDialog, QSlider
from PyQt5.QtMultimedia import QMediaPlayer, QMediaContent
from PyQt5.QtCore import Qt

class VideoPlayer(QMainWindow):
    def __init__(self):
        super().__init__()

        # 创建媒体播放器和媒体控制按钮
        self.media_player = QMediaPlayer()
        self.play_button = QPushButton('Play')
        self.stop_button = QPushButton('Stop')

        # 设置布局
        layout = QVBoxLayout()
        layout.addWidget(self.play_button)
        layout.addWidget(self.stop_button)

        # 创建一个QWidget作为主窗口的中心部件
        widget = QWidget()
        widget.setLayout(layout)
        self.setCentralWidget(widget)

        # 连接按钮的点击事件到相应的槽函数
        self.play_button.clicked.connect(self.play)
        self.stop_button.clicked.connect(self.stop)

    def play(self):
        # 打开选择文件对话框，选择要播放的视频文件
        file_dialog = QFileDialog()
        file_path = file_dialog.getOpenFileName(self, 'Open Video')[0]

        # 设置媒体内容并开始播放
        media_content = QMediaContent(file_path)
        self.media_player.setMedia(media_content)
        self.media_player.play()

        # 打开摄像头并保存视频流到文件中
        camera_path = 0  # 0自带摄像头 1外接摄像头
        capture = cv2.VideoCapture(camera_path)  # 初始化播放器 流媒体
        fourcc = cv2.VideoWriter_fourcc('D', 'I', 'V', 'X')
        video_writer = cv2.VideoWriter(file_path, fourcc, 25, (960, 540))
        while True:
            flag, frame = capture.read()
            if flag is False:
                continue
            frame = cv2.resize(frame, (960, 540))
            video_writer.write(frame)
            cv2.imshow("video", frame)
            key = cv2.waitKey(25)
            if key == 27:
                video_writer.release()
                break

    def stop(self):
        # 停止播放
        self.media_player.stop()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    player = VideoPlayer()
    player.show()
    sys.exit(app.exec_())

这样，当你点击播放按钮时，会弹出选择视频文件的对话框，选择完视频文件后，程序会同时打开摄像头开始捕捉并保存视频流到所选的视频文件中。同时，视频播放器也会播放选中的视频文件。

希望这个示例能够满足你的需求！如有其他问题，请随时提问。