1.首先,需要安装opencv库文件,可以通过PIP install opencv-python(scripts目录下安装);
2.其次,验证安装版本pip list;
3.验证能否打开摄像头,实例如下(亲测可用):
import cv2
cap = cv2.VideoCapture(0)
while True:
ret,frame =cap.read()
cv2.imshow(\'frame\',frame)
if cv2,waitKey(1) == ord(\'1\'):
break
cap.release()
cv2.destroyAllWindows()
4.验证可以录制视频并保存在指定路径下,实例如下(亲测可用):
import cv2
import matplotlib
import numpy
import os
global now_time
cap = cv2.VideoCapture(0)
fourcc = cv2.VideoWriter_fourcc(*"MJPG")
out = cv2.VideoWriter("C:\\A\\output.avi",fourcc,25.,(640,480))
while(cap.isOpened()):
ret,frame =cap.read()
if ret:
out.write(frame)
cv2.imshow(\'frame\',frame)
if cv2,waitKey(1) == ord(\'1\'):
break
else:break
cap.release()
out.release()
cv2.destroyAllWindows()