python实时捕捉屏幕,在Python中从屏幕捕获视频数据

Is there a way with Python (maybe with OpenCV or PIL) to continuously grab frames of all or a portion of the screen, at least at 15 fps or more? I've seen it done in other languages, so in theory it should be possible.

I do not need to save the image data to a file. I actually just want it to output an array containing the raw RGB data (like in a numpy array or something) since I'm going to just take it and send it to a large LED display (probably after re-sizing it).

解决方案

There is an other solution with mss which provide much better frame rate. (Tested on a Macbook Pro with MacOS Sierra)

import numpy as np

import cv2

from mss import mss

from PIL import Image

mon = {'top': 160, 'left': 160, 'width': 200, 'height': 200}

sct = mss()

while 1:

sct.get_pixels(mon)

img = Image.frombytes('RGB', (sct.width, sct.height), sct.image)

cv2.imshow('test', np.array(img))

if cv2.waitKey(25) & 0xFF == ord('q'):

cv2.destroyAllWindows()

break