How to access frame from USB camera?

Answered

Permanently deleted user

June 03, 2020 12:26

I am able to access frames from testlivecamera using python opencv. I used below snippet to extract frames from live camera.

 

stream_url="rtsp://nx_user:nx_pass@host:port/camera_id"
cap = cv2.VideoCapture(stream_url)

while True:
is_read_success, frame = cap.read()
now = str(datetime.now())
cv2.imwrite(out+'/'+str(now) + ".jpg", frame)

 

But, If I access USB camera I am getting green color image like below.

 

 

Is it not possible to extract images from usb camera using RTSP? 

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  Permanently deleted user

  June 03, 2020 17:27

  Often, web cameras use MJPEG codec, not H.264, that might be causing some issues.

   

  Can you try playing that rtsp stream in VLC media player? What do you see in VLC?

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