WD support for creating Meteobridge output format?

In w34_easyweathersetup I have used this link to my webcam image: ./webcam/aad-axis-01.jpg?
Nothing is shown under “Live Web Cam” rectangle.
If I select “Live Web Cam” link at the bottom the static webcam image pops up.
Any idea what I’m doing wrong?

What is requirements for showing webcam image?
Can we add a url to the webcam when using an IP camera? Should we use http://xxx or just add fqdn?
When using an image what is the size requirements (X x Y pixels)?