首先感谢如何用Python进行屏幕录制？_python 录屏-CSDN博客
以及OpenAI的gpt3.5提供了基础的代码

我重新用PyQt5设计了新的ui界面（所以记得下载对应的库啊！）

源代码如下，后面有时间我慢慢完善，争取做成一个完整的软件

短期目标：

1. 录制的新视频会取代旧视频，修改一下，并统一命名

2. 添加划定区域按钮，使其可以划定区域进行视频录制

3. 考虑如何录制音频进来

import numpy as np
from PIL import ImageGrab
import cv2
import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QMessageBox
from threading import Thread

# 设置录制参数
SCREEN_SIZE = (1920, 1080)
FILENAME = 'recorded_video.avi'
FPS = 30.0


# 创建类方法
class VideoRecorder:
    def __init__(self):
        # 初始参数，分别是录制开关参数、输出文件参数
        self.recording = False
        self.out = None
        self.widget = UI_Cv()
        self.init_ui()

    def init_ui(self):
        # 初始化信号与槽
        self.widget.start_button.clicked.connect(self.start_recording)
        self.widget.stop_button.clicked.connect(self.stop_recording)

    # 开始录制按钮
    def start_recording(self):
        self.out = cv2.VideoWriter(FILENAME, cv2.VideoWriter_fourcc(*"XVID"), FPS, SCREEN_SIZE)
        self.recording = True
        self.record_thread = Thread(target=self._record)
        self.record_thread.start()

    def _record(self):
        while self.recording:
            img = ImageGrab.grab(bbox=(0, 0, 1920, 1080))
            print('Recording...')
            frame = cv2.cvtColor(np.array(img), cv2.COLOR_RGB2BGR)
            self.out.write(frame)

    # 结束录制按钮
    def stop_recording(self):
        self.recording = False
        self.record_thread.join()
        self.out.release()
        cv2.destroyAllWindows()
        QMessageBox.information(self.widget, "Recording Finished", "Video recording has finished.")


# 创建UI界面
class UI_Cv(QWidget):
    def __init__(self):
        super(UI_Cv, self).__init__()
        self.start_button = QPushButton('开始录制', self)
        self.stop_button = QPushButton('结束录制', self)
        self.init_ui()

    def init_ui(self):
        self.start_button.setFixedHeight(24)
        self.start_button.setFixedWidth(100)
        self.start_button.move(50, 50)

        self.stop_button.setFixedHeight(24)
        self.stop_button.setFixedWidth(100)
        self.stop_button.move(50, 100)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    recorder = VideoRecorder()
    recorder.widget.show()
    sys.exit(app.exec_())