Or infinite time…so thats fine but later in the video sir said that it quits when any key is pressed , I didn’t understand that part.
Sir said waitkey(0) waits for 0 ms?
Hello @nikhil_sarda,
cv2.waitKey(t) waits for an input for t milliseconds and returns if no key is pressed in that duration.
So, if you do, cv2.waitKey(10), it will wait for 10ms and return if no key is pressed or return the moment a key is pressed, i.e, if in 2ms a key is pressed, it will return at that very moment.
cv2.waitKey(0) waits for an input for unlimited time duration, meaning, it will wait until a key is pressed. When a key is pressed, this function is returned and normal execution of the code begins after the function call.
Happy Learning 
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