"""python + opencv 實現(xiàn)屏幕錄制_by-_Zjh_"""
from PIL import ImageGrab
import numpy as np
import cv2
p = ImageGrab.grab()#獲得當前屏幕
k=np.zeros((200,200),np.uint8)
a,b=p.size#獲得當前屏幕的大小
fourcc = cv2.VideoWriter_fourcc(*'XVID')#編碼格式
video = cv2.VideoWriter('test.avi', fourcc, 16, (a, b))#輸出文件命名為test.mp4,幀率為16，可以自己設置
while True:
 im = ImageGrab.grab()
 imm=cv2.cvtColor(np.array(im), cv2.COLOR_RGB2BGR)#轉(zhuǎn)為opencv的BGR格式
 video.write(imm)
 cv2.imshow('imm', k)
 if cv2.waitKey(1) & 0xFF == ord('q'):
  break
video.release()
cv2.destroyAllWindows()

"""
python 屏幕錄制改進版，無opencv黑框顯示！
@zhou 2020/1/29_
"""
from PIL import ImageGrab
import numpy as np
import cv2
import datetime
from pynput import keyboard
import threading
flag=False #停止標志位
def video_record():
 """
 屏幕錄制！
 :return:
 """
 name = datetime.datetime.now().strftime('%Y-%m-%d %H-%M-%S') #當前的時間
 p = ImageGrab.grab() # 獲得當前屏幕
 a, b = p.size # 獲得當前屏幕的大小
 fourcc = cv2.VideoWriter_fourcc(*'XVID') # 編碼格式
 video = cv2.VideoWriter('%s.avi'%name, fourcc, 20, (a, b)) # 輸出文件命名為test.mp4,幀率為16，可以自己設置
 while True:
  im = ImageGrab.grab()
  imm=cv2.cvtColor(np.array(im), cv2.COLOR_RGB2BGR)#轉(zhuǎn)為opencv的BGR格式
  video.write(imm)
  if flag:
   print("錄制結(jié)束！")
   break
 video.release()
def on_press(key):
 """
 鍵盤監(jiān)聽事件?。?！
 :param key:
 :return:
 """
 #print(key)
 global flag
 if key == keyboard.Key.esc:
  flag=True
  print("stop monitor！")
  return False #返回False，鍵盤監(jiān)聽結(jié)束！
if __name__=='__main__':
 th=threading.Thread(target=video_record)
 th.start()
 with keyboard.Listener(on_press=on_press) as listener:
  listener.join()

# coding: utf-8
from PIL import ImageGrab
import numpy as np
import cv2
fps = 20
start = 3 # 延時錄制
end = 15 # 自動結(jié)束時間
curScreen = ImageGrab.grab() # 獲取屏幕對象
height, width = curScreen.size
video = cv2.VideoWriter('video02.avi', cv2.VideoWriter_fourcc(*'XVID'), fps, (height, width))
imageNum = 0
while True:
  imageNum += 1
  captureImage = ImageGrab.grab() # 抓取屏幕
  frame = cv2.cvtColor(np.array(captureImage), cv2.COLOR_RGB2BGR)
  # 顯示無圖像的窗口
  cv2.imshow('capturing', np.zeros((1, 255), np.uint8))
  # 控制窗口顯示位置，方便通過按鍵方式退出
  cv2.moveWindow('capturing', height - 100, width - 100) 
  if imageNum > fps * start:
    video.write(frame)
  # 退出條件  
  if cv2.waitKey(50) == ord('q') or imageNum > fps * end:
    break
video.release()
cv2.destroyAllWindows()