OpenCV frame capture with no output and errors (gstreamer)

9ghtX — Wed, 29 Sep 2021 04:58:02 GMT

I'm trying to get frames via Python OpenCV from my MIPI camera with gstreamer pipeline, but there is no any output messages like warnings, errors or cv2.imshow() frames.

Here is code that I'm trying to execute (found it in Internet):

import cv2

def receive():

cap_receive = cv2.VideoCapture('udpsrc port=5000 caps = "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96" ! rtph264depay ! decodebin ! videoconvert ! appsink', cv2.CAP_GSTREAMER)

if not cap_receive.isOpened():

print('VideoCapture not opened')

exit(0)

while True:

ret,frame = cap_receive.read()

if not ret:

print('empty frame')

break

cv2.imshow('receive', frame)

if cv2.waitKey(1)&0xFF == ord('q'

break

#cap_receive.release()

if __name__ == '__main__':

receive()

cv2.destroyAllWindows()

Re: OpenCV frame capture with no output and errors (gstreamer)

Bio_TICFSL — Thu, 30 Sep 2021 13:15:28 GMT

Hello 9ghtX,

Is the code compile? you are trying to do a videocapture form UDP, is porbably that opencv detec that is not activate.

Regards

topic OpenCV frame capture with no output and errors (gstreamer) in i.MX Processors

OpenCV frame capture with no output and errors (gstreamer)

Re: OpenCV frame capture with no output and errors (gstreamer)