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combined monitor image and mss().monitors incorrect

See original GitHub issue

General information:

  • OS name: Windows 10
  • OS version: 10.0.17134.523
  • OS architecture: x64
  • Resolutions:
    • Monitor 1: 1600x900
    • Monitor 2: 1920x1080
  • Python version: 3.7.0
  • MSS version: 4.0.1

The combined monitor image is rendering incorrectly and (because?) the monitors property returns invalid results.

If you look at my output from print(sct.monitors) you will see the results are impossible:

[{'left': 0, 'top': -172, 'width': 3520, 'height': 1252}, {'left': 0, 'top': 0, 'width': 1600, 'height': 900}, {'left': 1600, 'top': -172, 'width': 1920, 'height': 1080}]

If I understand correctly, this output is saying that monitor 2 lies outside of the combination of all monitors together, which of course is impossible. I think this is what causes the 172-pixel black bar along the bottom of the image.


I think the correct output of mss().monitors should be:

[{'left': 0, 'top': 0, 'width': 3520, 'height': 1080}, {'left': 0, 'top': 172, 'width': 1600, 'height': 900}, {'left': 1600, 'top': 0, 'width': 1920, 'height': 1080}]

here is a screenshot of my monitor position in windows display manager:


Issue Analytics

  • State:closed
  • Created 5 years ago
  • Comments:13 (10 by maintainers)

github_iconTop GitHub Comments

SergeyKalutskycommented, Mar 14, 2019

If I’ll have some time I will work on a fix. Shouldn’t be hard to do.

grintorcommented, Feb 25, 2019

I was right. I was able to work around the windows bug like this:

import mss
from PIL import Image

sct = mss.mss()

all_mon = sct.monitors[0]
size = (all_mon['width'], (all_mon['height']))
img ='RGB', size)

for num, monitor in enumerate(sct.monitors[1:], 1):
	sct_img = sct.grab(monitor)

	monitor_img = Image.frombytes("RGB", sct_img.size, sct_img.bgra, "raw", "BGRX")
	position = (monitor['left'], monitor['top'])
	img.paste(monitor_img, position)
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