How can I set webcam resolution with opencv in python?

super-resolution

asked 2018-11-21 02:45:04 -0600

sangeun
1 ●1 ●1

I'm trying to get the maximum resolution that my webcam has..! But I have no idea how to do it.. Does anyone had this problem before? Please give me some comments below. Thanks. Here's my codes.

vs = VideoStream(src=0).start()

fileStream = False

time.sleep(1.0)

total = 0

pre = 0

while True:

if fileStream and not vs.more():

    break

frame = vs.read()
frame = cv2.flip(frame,1)
frame = imutils.resize(frame, width=1280)
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

...

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Comments

Read doc : set and properties

LBerger ( 2018-11-21 02:50:14 -0600 )edit

1

VideoStream is not even from opencv ;(

https://github.com/jrosebr1/imutils/b...

berak ( 2018-11-21 03:09:27 -0600 )edit

so,unless it's using the picam (we can't help with that), we're here: https://github.com/jrosebr1/imutils/b...

and it's vs.stream.set(something)

berak ( 2018-11-21 03:14:04 -0600 )edit

@sangeun , you should be careful with 3rdparty wrappers using opencv code, even if it's from adrian ..

at some point, noone will be able or willing, to dig through layers and layers of wrapping

berak ( 2018-11-21 03:16:21 -0600 )edit

@sangeun, there's no way to choose the resolution from an ip capture, using opencv.

please lookup your camera's manual, and try to find out, if they offer a different URL for this

berak ( 2018-11-22 14:20:19 -0600 )edit

Thanks for your comments! I should find out the other options from camera setting. Actually I just started to learn both python and opencv, so I'm kind of struggling now haha Thank you again :)

sangeun ( 2018-11-22 19:16:06 -0600 )edit

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0

answered 2018-11-23 00:24:44 -0600

Kafan
26 ●1 ●2

updated 2018-11-23 00:26:20 -0600

video_capture = cv2.VideoCapture(videoDeviceIndex) video_capture.set(3,640) #Setting webcam's image width video_capture.set(4,480) #Setting webcam' image height

Make sure that the webcam supports the resolution that you are setting to using v4l2-ctl command

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-2

answered 2018-11-22 14:15:01 -0600

supra56

943 ●9 ●6

Correct way like this:
vs = VideoStream(src="http://192.168.75.203/video/mjpg.cgi").start()
while True:
      frame = vs.read()
:
:
:
:

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How can I set webcam resolution with opencv in python?

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