How to get rid of huge opencv lag on pc without graphics card?

Question

OpenCV

I connect to the ip-camera like this:

url='rtsp://192.168.1.80:8080/h264_ulaw.sdp'
cap = cv2.VideoCapture(url)

and in an endless loop

ret, frame = cap.read()
crop_frame = frame[5:220, 5:220]

I use this function for dominant color over crop_frame:

def unique_count_app(a):
    colors, count = np.unique(a.reshape(-1,a.shape[-1]), axis=0, return_counts=True)
    return colors[count.argmax()]

I set the camera resolution to 320/240, still a huge delay.
Does the numpai function really count the dominant color?
Is it possible to process not all frames in a row from the ip camera stream, but skip half and take only real-time frames?
You need at least 1 frame per second fps, how to get rid of the delay?

Answer 1

Is it possible to use the middle color instead of the dominant color in your problem? This would make everything much easier.