import cv2

pipeline = "rtspsrc location=rtsp://192.168.2.64:/H264?W=1920&H=1080&FPS=30&BR=4900000 latency=100 \
        caps='application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=\
        (string)H264,width=1920,height=1080,framerate=30/1' !\
        rtph264depay ! h264parse ! omxh264dec ! nvvidconv ! \
        video/x-raw, width=(int)1280, height=(int)720, format=(string)BGRx ! \
        videoconvert ! appsink sync=false"

cap = cv2.VideoCapture(pipeline)
#cap = cv2.VideoCapture("rtsp://192.168.2.64:554/H264?W=2704&H=1520&BR=10000000&FPS=30")
while True:
    ret, frame = cap.read()
    frame = cv2.flip(frame,1)
    cv2.imshow('frame', frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()