Getting uint16 info over rtsp using cv2.videocapture

Python
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1

Hello, I managed to get a grayscale image of (480,640) through the code below.


cap_depth = cv2.VideoCapture("rtsp://admin:admin@192.168.1.10/depth", cv2.CAP_GSTREAMER)
while(True):
    ret2, frame_depth = cap_depth.read()
    cv2.namedWindow('kinova_depth', cv2.WINDOW_AUTOSIZE)
    cv2.setMouseCallback('kinova_depth', mouse_callback)
    cv2.imshow('kinova_depth',frame_depth)
    if cv2.waitKey(20) & 0xFF == ord('q'):
        break
cap_depth.release()
cv2.destroyAllWindows()

However, the output image was in uint8 format ranging from 0 to 255, and accurate depth information could not be obtained.
I was able to get a value similar to uint16 through (pixel/255)*65535, but a lot of errors occurred because I had already brought the value of uint8.

Is there a way to get raw depth information of uint16 when streaming rtsp using opencv?

My environment is as below
Window10
python 3.7
opencv 4.1.0

2

please, in any case update this

and, it might work with ffmpeg

3

I know I need to use version 4.1.0 to use CAP_GSTREAMER.

I also looked for related links. If you use ffmpeg, you can probably use 16-bit information as input. But what I want is to get the output in 16bit.

4

not true. why do you think so ?

5

I found a way to build opencv 4.1.0 version to use CAP_GSTREAMER on window10.
However, this method is only available in Python version 3.7 and from 3.8 it is said that a different method should be used, but unfortunately that method is not possible, so we are using versions 3.7 and 4.1.0.