cv2.VideoCapture "Port missing in uri" only on Python3

Question

I'm trying to connect to a RTSP camera via OpenCV using VideoCapture from opencv-python and i get the following error ONLY IN PYTHON3, IT WORKS NORMALLY IN PYTHON2:

[tcp @ 0x1d0a4ac0] Port missing in uri
Unable to open

The code:

import cv2

endpoint = "rtsp://<user>:<password>@192.168.<ip>.<ip>:554/cam/realmonitor?channel=1&subtype=0"

cap = cv2.VideoCapture(endpoint)

if not cap.isOpened():
        print("Unable to open")
else:
        print("Open")

What I've tried:

Reinstalling opencv-python
Reinstalling Python and all it's dependencies and packages (apt install python-opencv)
Checking the RTSP connection and authentication (It works fine only in Python2)
Checked for Port missing in uri warning: Error opening file with Python OpenCV cv2.VideoCapture()
Checked for cv2.videoCapture only return "Port missing in uri"

I'm running this in a NVidia Jetson Xavier AGX running Ubuntu.

Any suggestion to fix this will be welcome

(And, YES, I NEED it to run on Python3)

Have you tried with a different URI format? e.g. `rtsp://192.168..:554/cam/realmonitor?user=&password=&channel=1&subtype=0` — pazitos10, Apr 12 '21 at 20:14

score 0 · Answer 1 · answered Oct 14 '21 at 18:22

0

I'm getting this error only in a newer version of opencv.

It worked for me in python3 with an older version, so I pinned the older version to my requirements.

opencv-python==4.1.1.26

answered Oct 14 '21 at 18:22

bubbassauro

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ERROR: Could not find a version that satisfies the requirement opencv-python==4.1.1.26 (from versions: 3.4.0.14, 3.4.10.37, 3.4.11.39, 3.4.11.41, 3.4.11.43, 3.4.11.45, 3.4.13.47, 3.4.15.55, 3.4.16.57, 3.4.16.59, 3.4.17.61, 3.4.17.63, 4.3.0.38, 4.4.0.40, 4.4.0.42, 4.4.0.44, 4.4.0.46, 4.5.1.48, 4.5.3.56, 4.5.4.58, 4.5.4.60, 4.5.5.62, 4.5.5.64) ERROR: No matching distribution found for opencv-python==4.1.1.26 – Maizied Hasan Majumder Apr 22 '22 at 09:54
1

yeah these are chaos... depending on the platform/architecture that you're deploying to, there may be different versions available to install with pip. I would try going with one of the near versions that are listed in that error message – bubbassauro Apr 25 '22 at 19:03

cv2.VideoCapture "Port missing in uri" only on Python3

1 Answers1