No output in rviz/rqt

[AllanGErnst]

We have an ArkCam Basic Plus Mini IP camera (https://en.ark-vision-systems.com/produkte/arkcambasic+mini/), which we would like to connect to Ros2_ipcamera.

We have a simple Python script using OpenCV which receives images from the camera via "rtsp: //192.168.0.76:8554/h264", showing that the camera works. We have installed Ros2_ipcamera as described in the readme file and customized camera_info.yaml and ipcamera.yaml as shown below.

ros2 launch ros2_ipcamera ipcamera.launch.py starts without errors and ros2 topic list shows /ipcamera/camera_info and /ipcamera/image_raw.

However, we do not get any image in either rviz or rqt. Is there anything we have overlooked?

Thanks in advance.

ipcamera.yaml:

ipcamera:
   ros__parameters:
     rtsp_uri: "rtsp: //192.168.0.76:8554/h264"
     image_topic: "image_raw"
     image_width: 1280
     image_height: 720

camera_info.yaml:

image_width: 1280
image_height: 720
"the rest is left unchanged"