I get only a cam picture no AR

[Ralf4711k]

Hi everybody,
i try a AR exampel but it dont work.
I use the code:

<script src="[https://aframe.io/releases/1.0.0/aframe.min.js"></script>](https://aframe.io/releases/1.0.0/aframe.min.js%22%3E%3C/script%3E) <script src="[https://raw.githack.com/AR-js-org/AR.js/master/aframe/build/aframe-ar.js"></script>](https://raw.githack.com/AR-js-org/AR.js/master/aframe/build/aframe-ar.js%22%3E%3C/script%3E) the side open i see a cam picture but nothing more happendes, wher can i set the marker or wher has it to be? best regards Ralf

[Ralf4711k]

Hi everybody,
i try a AR excampel but it dont work.
I use the code:

the side open i see a cam picture but nothing more happendes, wher kan i set the marker or wher has it to be?
best regards
Ralf