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python实现录屏功能
将生成的avi文件转为mp4格式后删掉avi文件
参考感谢：https://www.cnblogs.com/peachh/p/16549254.html

import os
import cv2
import time
import threading
import numpy as np
from PIL import ImageGrab
from pynput import keyboard
from datetime import datetime
from moviepy.editor import VideoFileClipflag = Falsedef video_record():global name, start_time, final_timename = datetime.now().strftime('%Y-%m-%d %H-%M-%S')  # 当前的时间（作为文件名）screen = ImageGrab.grab()  # 获取当前屏幕width, height = screen.size  # 获取当前屏幕的大小fourcc = cv2.VideoWriter_fourcc(*'XVID')  # MPEG-4编码，文件后缀可为.avi .asf .mov等video = cv2.VideoWriter(f'{name}.avi', fourcc, 20, (width, height))  # （文件名，编码器，帧率，视频宽高）print('开始录制!')start_time = time.time()while True:if flag:print("录制结束！")final_time = time.time()video.release()  # 释放breakim = ImageGrab.grab()  # 图片为RGB模式imm = cv2.cvtColor(np.array(im), cv2.COLOR_RGB2BGR)  # 转为OpenCV的BGR模式video.write(imm)  # 写入def on_press(key):global flagif key == keyboard.KeyCode.from_char('1') or key == keyboard.KeyCode.from_char('q'):flag = True  # 改变return False  # 返回False，键盘监听结束！def video_info():video = cv2.VideoCapture(f'{name}.avi')  # 记得文件名加格式不要错！fps = video.get(cv2.CAP_PROP_FPS)count = video.get(cv2.CAP_PROP_FRAME_COUNT)size = (int(video.get(cv2.CAP_PROP_FRAME_WIDTH)), int(video.get(cv2.CAP_PROP_FRAME_HEIGHT)))print('帧率=%.1f' % fps)print('帧数=%.1f' % count)print('分辨率', size)print('视频时间=%.3f秒' % (count / fps))print('录制时间=%.3f秒' % (final_time - start_time))print('推荐帧率=%.2f' % (fps * ((count / fps) / (final_time - start_time))))def avi_2_mp4():# 指定输入文件路径avi_file = f'{name}.avi'# 指定输出文件路径mp4_file = f'{name}.mp4'# 使用 VideoFileClip 加载 AVI 文件video = VideoFileClip(avi_file)# 将视频写入 MP4 文件video.write_videofile(mp4_file, codec="libx264")# 完成后释放资源video.close()# 删除原始的AVI文件os.remove(avi_file)def run():th = threading.Thread(target=video_record)th.start()with keyboard.Listener(on_press=on_press) as listener:listener.join()time.sleep(1)  # 等待视频释放过后video_info()avi_2_mp4()if __name__ == '__main__':run()

效果图