How to know/assign which csi camera I'm using, if I have two csi camera?

[daniel2008_12]

Continuing the discussion from OpenCV Video Capture with GStreamer doesn't work on ROS-melodic:

@DaneLLL

def read_cam():
    cap = cv2.VideoCapture("nvarguscamerasrc ! video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080,format=(string)NV12, framerate=(fraction)30/1 ! nvvidconv ! video/x-raw, format=(string)BGRx ! videoconvert !  appsink")
    if cap.isOpened():
        cv2.namedWindow("demo", cv2.WINDOW_AUTOSIZE)
        while True:
            ret_val, img = cap.read();
            cv2.imshow('demo',img)
            cv2.waitKey(10)
    else:
     print "camera open failed"

    cv2.destroyAllWindows()

Continuing the discussion from OpenCV Video Capture with GStreamer doesn't work on ROS-melodic:

@DaneLLL

cap = cv2.VideoCapture("nvarguscamerasrc ! video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080,format=(string)NV12, framerate=(fraction)30/1 ! nvvidconv ! video/x-raw, format=(string)BGRx ! videoconvert !  appsink")
    if cap.isOpened():

How to know/assign which csi camera I’m using, if I have two csi camera?

[DaneLLL]

Hi,
Please set the property to nvarguscamerasrc:

  sensor-id           : Set the id of camera sensor to use. Default 0.
                        flags: readable, writable
                        Integer. Range: 0 - 255 Default: 0

[daniel2008_12]

$ gst-launch-1.0 nvarguscamerasrc sensor-id=1 ! nvvidconv ! video/x-raw,format=I420 ! xvimagesink sync=0

it works. Thanks @DaneLLL