#从摄像头捕获视频
import cv2
def readvideo():
cap=cv2.VideoCapture('output.avi')
print(cap.get(3),cap.get(4))
while (cap.isOpened):
ret,frame =cap.read()
if ret==True:
frame=cv2.flip(frame,1)
out.write(frame)
cv2.imshow('frame',frame)
if cv2.waitKey(20)==ord('q'):
break
else:
break
cap=cv2.VideoCapture(0)#0为设备索引号,此处也可以为文件
#print(cap.isOpened)#检查是否初始化
#print(cap.get(3),cap.get(4))
fourcc=cv2.VideoWriter_fourcc(*'XVID')
out=cv2.VideoWriter('output.avi',fourcc,20.0,(640,480))
while (cap.isOpened):
ret,frame =cap.read()
if ret==True:
frame=cv2.flip(frame,1)
out.write(frame)
cv2.imshow('frame',frame)
#ret=cap.set(3,256)
#ret-cap.set(4,256)
#gray =cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
#cv2.imshow('frame',gray)
if cv2.waitKey(20)==ord('q'):
break
else:
break
readvideo()
cap.release()
out.release()
cv2.destroyAllWindows()
python opencv video capture
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转载自blog.csdn.net/qq_41244435/article/details/86594118
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