opencv3.0 - Reading a video in OpenCV -


while working video in opencv using python, when reading frames using 

cap=cv2.videocapture(0) ret,frame=cap.read()

what variables ret , frame store?

reference material: getting started videos

ret,frame=cap.read()

from documentation above:

cap.read() returns bool (true/false). if frame read correctly, true. can check end of video checking return value.

so in assence,

ret = true or ret = false based on whether frame read correctly , frame actual frame read (provided ret == true)


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