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Why does VideoCapture(1) take so long?

cv2.videocapture

asked 2019-07-12 10:53:21 -0600

It seems like it takes forever for my external webcam to actually take the picture. As soon as the picture is taken, it works. When I set it to VideoCapture(0), it works much faster but I need to use my external webcam instead so I have to set it to VideoCapture(1). Does anyone know how to speed up this process? The rest of my code finishes instantly after the picture is finally taken with the external webcam.

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Why was this placed on the moderation queue?

robcatinello ( 2019-07-12 10:53:51 -0600 )edit

all new posts are moderated, due to a lot of spam, don't worry.

berak ( 2019-07-12 11:17:55 -0600 )edit

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answered 2019-07-16 08:48:40 -0600

Ok so it took me a while but the problem was solved by switching the API. I changed the line of code:

video_capture = cv2.VideoCapture(1) to

video_capture = cv2.VideoCapture(1, cv2.CAP_DSHOW)

by adding this, it now works instantly, removing the delay which was present before.

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Asked: 2019-07-12 10:53:21 -0600

Seen: 20,213 times

Last updated: Jul 12 '19

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