Unable to set resolution of webcam videostreams

[whogben]

Following this earlier issue, I am trying to set the resolution of a videostream coming off of a webcam: https://github.com/jrosebr1/imutils/issues/55

According to the resolution of that issue, the addition of kwargs was meant to resolve this, but looking at VideoStream.init(..) it appears kwargs are ignored for webcam video streams: https://github.com/jrosebr1/imutils/blob/master/imutils/video/videostream.py

Following the workaround described in the original issue, I have tried to set the information after starting the stream using openCV args:

self.video_stream = VideoStream(self.cam_idx, resolution=(width,height)).start()
self.video_stream.stream.set(cv2.CAP_PROP_FRAME_WIDTH, width)
self.video_stream.stream.set(cv2.CAP_PROP_FRAME_HEIGHT, height)

errors:

VIDIOC_DQBUF: Invalid argument
VIDIOC_STREAMON: Invalid argument
VIDIOC_STREAMON: Invalid argument

I'm out of ideas - is there a way to set a resolution for a webcam based VideoStream / is there a recommended workaround?

Thanks!

[jaromrax]

picam = VideoStream(0 ).start()
picam.stream.set(3, 640)
picam.stream.set(4, 480)

works fine to me.

[matiasandina]

Any updates on this? this still seems to not be solved