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():
    # ...（省略了部分代碼）
    while True:
        if flag:
            # ...（省略了部分代碼）
            break
        im = ImageGrab.grab()  # 截圖
        imm = cvtColor(np.array(im), COLOR_RGB2BGR)  # 轉(zhuǎn)換顏色模式
        video.write(imm)  # 寫入視頻文件

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

def video_info():
    # ...（省略了部分代碼）
    print('幀率=%.1f' % fps)
    # ...（省略了部分代碼）
    print('推薦幀率=%.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)  # 等待視頻釋放過后
    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實(shí)現(xiàn)錄屏功能.py
# @Software : PyCharm
# 發(fā)布程序：pyinstaller -F -w -i F:\python_demo\2.ico F:\python_demo\python實(shí)現(xiàn)錄屏功能.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


# 錄入視頻
def video_record():
    # 加了global，則可以在函數(shù)內(nèi)部對(duì)函數(shù)外的對(duì)象進(jìn)行操作了，也可以改變它的值了
    global name
    name = datetime.now().strftime('%Y-%m-%d %H-%M-%S')               # 當(dāng)前的時(shí)間（當(dāng)文件名）
    screen = ImageGrab.grab()                                         # 獲取當(dāng)前屏幕
    width, high = screen.size                                         # 獲取當(dāng)前屏幕的大小
    fourcc = VideoWriter_fourcc('X', 'V', 'I', 'D')                   # MPEG-4編碼,文件后綴可為.avi .asf .mov等
    video = VideoWriter('%s.avi' % name, fourcc, 15, (width, high))   # （文件名，編碼器，幀率，視頻寬高）
    for i in range(3):
        time.sleep(1)
        print("倒計(jì)時(shí)：{}".format(3-i))
    print('開始錄制!')
    global start_time
    start_time = time.time()

    while True:
        if flag:
            print("錄制結(jié)束！")
            global final_time
            final_time = time.time()
            video.release()                                     # 釋放
            break
        im = ImageGrab.grab()  # 圖片為RGB模式
        imm = cvtColor(np.array(im), COLOR_RGB2BGR)             # 轉(zhuǎn)為opencv的BGR模式
        video.write(imm)                                        # 寫入
        # time.sleep(5)                                         # 等待5秒再次循環(huán)


# 結(jié)束監(jiān)聽按鍵，按下esc結(jié)束錄屏
def on_press(key):
    global flag
    # esc鍵
    if key == keyboard.Key.esc:
        flag = True                                             # 改變
        return False                                            # 返回False，鍵盤監(jiān)聽結(jié)束！


# 視頻信息
def video_info():
    video = VideoCapture('%s.avi' % name)                       # 記得文件名加格式不要錯(cuò)！
    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('幀率=%.1f' % fps)
    print('幀數(shù)=%.1f' % count)
    print('分辨率', size)
    print('視頻時(shí)間=%.3f秒' % (int(count)/fps))
    print('錄制時(shí)間=%.3f秒' % (final_time-start_time))
    print('推薦幀率=%.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)  # 等待視頻釋放過后
    video_info()