使用Python实现屏幕录制与键盘监听功能

import time
import threading
from datetime import datetime
from PIL import ImageGrab
import numpy as np
from cv2.cv2 import cvtColor, VideoWriter_fourcc, VideoWriter, COLOR_RGB2BGR, VideoCapture, \
                  CAP_PROP_FPS, CAP_PROP_FRAME_COUNT, CAP_PROP_FRAME_WIDTH, CAP_PROP_FRAME_HEIGHT
from pynput import keyboard

def video_record():
    # ...（省略了部分代码）
    while True:
        if flag:
            # ...（省略了部分代码）
            break
        im = ImageGrab.grab()  # 截图
        imm = cvtColor(np.array(im), COLOR_RGB2BGR)  # 转换颜色模式
        video.write(imm)  # 写入视频文件

def on_press(key):
    global flag
    if key == keyboard.Key.esc:
        flag = True
        return False

def video_info():
    # ...（省略了部分代码）
    print('帧率=%.1f' % fps)
    # ...（省略了部分代码）
    print('推荐帧率=%.2f' % (fps*((int(count)/fps)/(final_time-start_time))))

if __name__ == '__main__':
    flag = False
    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()

#!/usr/bin/env python
# -*- coding = utf-8 -*-
# @Time : 2021/10/6 17:43
# @Author : Leuanghing Chen
# @Blog : https://blog.csdn.net/weixin_46153372?spm=1010.2135.3001.5421
# @File : python实现录屏功能.py
# @Software : PyCharm
# 发布程序：pyinstaller -F -w -i F:\python_demo\2.ico F:\python_demo\python实现录屏功能.py

import time
import threading
from datetime import datetime
from PIL import ImageGrab
import numpy as np
from cv2.cv2 import cvtColor, VideoWriter_fourcc, VideoWriter, COLOR_RGB2BGR, VideoCapture,\
                    CAP_PROP_FPS, CAP_PROP_FRAME_COUNT, CAP_PROP_FRAME_WIDTH, CAP_PROP_FRAME_HEIGHT
from pynput import keyboard


# 录入视频
def video_record():
    # 加了global，则可以在函数内部对函数外的对象进行操作了，也可以改变它的值了
    global name
    name = datetime.now().strftime('%Y-%m-%d %H-%M-%S')               # 当前的时间（当文件名）
    screen = ImageGrab.grab()                                         # 获取当前屏幕
    width, high = screen.size                                         # 获取当前屏幕的大小
    fourcc = VideoWriter_fourcc('X', 'V', 'I', 'D')                   # MPEG-4编码,文件后缀可为.avi .asf .mov等
    video = VideoWriter('%s.avi' % name, fourcc, 15, (width, high))   # （文件名，编码器，帧率，视频宽高）
    for i in range(3):
        time.sleep(1)
        print("倒计时：{}".format(3-i))
    print('开始录制!')
    global start_time
    start_time = time.time()

    while True:
        if flag:
            print("录制结束！")
            global final_time
            final_time = time.time()
            video.release()                                     # 释放
            break
        im = ImageGrab.grab()  # 图片为RGB模式
        imm = cvtColor(np.array(im), COLOR_RGB2BGR)             # 转为opencv的BGR模式
        video.write(imm)                                        # 写入
        # time.sleep(5)                                         # 等待5秒再次循环


# 结束监听按键，按下esc结束录屏
def on_press(key):
    global flag
    # esc键
    if key == keyboard.Key.esc:
        flag = True                                             # 改变
        return False                                            # 返回False，键盘监听结束！


# 视频信息
def video_info():
    video = VideoCapture('%s.avi' % name)                       # 记得文件名加格式不要错！
    fps = video.get(CAP_PROP_FPS)
    count = video.get(CAP_PROP_FRAME_COUNT)
    size = (int(video.get(CAP_PROP_FRAME_WIDTH)), int(video.get(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' % (int(count)/fps))
    print('录制时间=%.3f秒' % (final_time-start_time))
    print('推荐帧率=%.2f' % (fps*((int(count)/fps)/(final_time-start_time))))


if __name__ == '__main__':
    flag = False
    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()