问题描述
我正在尝试制作输出 AVI 文件的 python 屏幕录像机。按“q”后循环应该停止,但这不起作用。当我用 Ctrl + C 中断程序时,它也不输出任何内容。我使用的是 Mac 操作系统。
import cv2
import numpy as np
import pyautogui
SCREEN_SIZE = (1440,900)
fourcc = cv2.VideoWriter_fourcc(*"XVID")
out = cv2.VideoWriter("output2.avi",fourcc,20.0,(SCREEN_SIZE))
while True:
img = pyautogui.screenshot()
frame = np.array(img)
frame = cv2.cvtColor(frame,cv2.COLOR_BGR2RGB)
out.write(frame)
cv2.imshow("screenshot",frame)
if cv2.waitKey(1) == ord("q"):
break
cv2.destroyAllWindows()
out.release()
非常感谢您的建议;)
解决方法
在这里(OpenCV videowrite doesn't write video)我发现最常见的问题是如果分辨率错误,它不会保存。
为确保您使用的屏幕分辨率正确,请使用 SCREEN_SIZE = pyautogui.size()
完整的代码是:
import cv2 as cv2
import numpy as np
import pyautogui
SCREEN_SIZE = pyautogui.size() # changed this line
fourcc = cv2.VideoWriter_fourcc(*"XVID")
out = cv2.VideoWriter("output2.avi",fourcc,20.0,SCREEN_SIZE)
while True:
img = pyautogui.screenshot()
frame = np.array(img)
frame = cv2.cvtColor(frame,cv2.COLOR_BGR2RGB)
out.write(frame)
cv2.imshow("screenshot",frame)
if cv2.waitKey(1) == ord("q"):
break
cv2.destroyAllWindows()
out.release()