Sorry, forget the post.
I've forgotten about this part:
I've installed a StreamLock certificate to secure streaming through SSL encryption (RTMPS) according to the tutorials.
Because of the port 443 being already in use I have defined port 8443 for SSL.
When I open the RTMPS video player I receive a security warning popup asking whether I want to connect, claiming that the certificate doesn't match the site's name.
When I agree to the dialogue the video stream starts to play.
How can I get rid of the security warning?
Thank you & regards