reComputer Industrial J3011 POE Camera on PSE Port

Realtek Ethernet (PSE) shows “connected” for IPv4 manual setting ( and camera is being correctly powered over cable and is pingable
Reolink POE IP camera (A14) – maybe suggest another camera ?

Tested with something like this and it fails
BUT when connected to router (and separately powered) works correctly

import cv2

#print("Before URL")
cap = cv2.VideoCapture('rtsp://admin:[email protected]:554/)
#print("After URL")

while True:

    #print('About to start the Read command')
    ret, frame =
    #print('About to show frame of Video.')

    if cv2.waitKey(1) & 0xFF == ord('q'):


alan@orin-nano-JP6:~$ python (camera POE connected to PSE port)

Before URL
[tcp @ 0xaaaae4235f40] Connection to tcp:// failed: Connection refused
[ WARN:[email protected]] global cap_gstreamer.cpp:2784 handleMessage OpenCV | GStreamer warning: Embedded video playback halted; module source reported: Could not open resource for reading and writing.
[ WARN:[email protected]] global cap_gstreamer.cpp:1679 open OpenCV | GStreamer warning: unable to start pipeline
[ WARN:[email protected]] global cap_gstreamer.cpp:1164 isPipelinePlaying OpenCV | GStreamer warning: GStreamer: pipeline have not been created
[ERROR:[email protected]] global cap.cpp:164 open VIDEOIO(CV_IMAGES): raised OpenCV exception:

OpenCV(4.8.0) /home/ubuntu/opencv_build/opencv/modules/videoio/src/cap_images.cpp:253: error: (-5:Bad argument) CAP_IMAGES: can’t find starting number (in the name of file): rtsp://admin:[email protected]:554/ in function ‘icvExtractPattern’

After URL
About to start the Read command
About to show frame of Video.
Traceback (most recent call last):
File “/home/alan/”, line 12, in
cv2.error: OpenCV(4.8.0) /home/ubuntu/opencv_build/opencv/modules/highgui/src/window.cpp:971: error: (-215:Assertion failed) size.width>0 && size.height>0 in function ‘imshow’

alan@orin-nano-JP6:~$ ping
PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=64 time=0.056 ms
64 bytes from icmp_seq=2 ttl=64 time=0.086 ms
64 bytes from icmp_seq=3 ttl=64 time=0.090 ms
64 bytes from icmp_seq=4 ttl=64 time=0.072 ms
64 bytes from icmp_seq=5 ttl=64 time=0.067 ms
64 bytes from icmp_seq=6 ttl=64 time=0.083 ms
64 bytes from icmp_seq=7 ttl=64 time=0.087 ms
— ping statistics —
7 packets transmitted, 7 received, 0% packet loss, time 6139ms
rtt min/avg/max/mdev = 0.056/0.077/0.090/0.011 ms

Hi there,
You solid on the syntax of this ? I see only a single ,Hyphen?
GL :slight_smile: PJ

Thanks PJ.
The actual code has the correct form, but my copy into this forum somehow lost the (’) single quote.
cap = cv2.VideoCapture(‘rtsp://admin:[email protected]:554/’)
BTW my request now is for the setup that was used by Seeed to verify the PSE port (POE IP Camera model and test programme used).
If you have any ideas about this I would be very grateful.
Best regards,

Hi there,
Yea that can happen… Just wanted to be sure :+1:
I’ll look into that POE port situ? With the different variants of POE could just be they don’t go all the way to the 48V stuff my bet or even 24v. Wonder if you used an injector would it come to life?
for video at least.
GL :slight_smile: PJ

I’ll post it up when I find any info.

just saw that , injector?
GL :slight_smile: PJ :v:

So I looked at my HS log setup with IPcam, and the
String for Rtsp was like this:

‘rtsp:// [USER] : [PASS] @ [ADDRESS] : [RTSP PORT] /media/video[STREAM TYPE]'

I used this guide, for comparison

Live View URL


Where is the IP address of your camera, is the RTSP port of the camera, and and refer to the login credentials of your camera.

Using the first format, you will be asked to login and verify your credentials before being allowed to view the stream.
Using the second format, you will automatically login when requesting the stream

refers to the channel number and stream type of the camera. For example, an of 101 refers to channel #1 (first digit, 1xx) using the main stream (second and third digits, x01).

Typically, you’ll use a program such as VLC Media Player to decode the RTSP stream.

Examples below.

Main Stream

Sub Stream

Take a snapshot via HTTP URL


Where and are the login credentials of the camera in question, and and are the IP address of the camera and its HTTP port (default 80).

The above URL will present a snapshot of the camera’s current live view. Typically, this is used to embed a regular snapshot based on a time interval on a web page, but there are of course many things you can do with the URL.

For example
http://admin:[email protected]:80/Streaming/Channels/1/picture


Hi again PJ,
I tried to use most of your detailed help on the PSE port, but without immediate success.
However, it seems that this port is associated with apache2 server and so the only response to a simple web browser probing ( brings up the apache2 default page! Briefly tried disabling the server, but seems no direct way to access the camera. Perhaps tech support at Seeed will come forth with some guidance.

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