autologin in zm fronted through url

[snaptec]

Hello everybody,
I´ve got a working zone minder 1.26.5 running.

What I want to do is building a "control monitor" with a raspberry pi.

Everything works fine - zm streaming is good in chromium on the rpi.

The only problem:
builtin users are enabled.

I´ve searched the net / wiki / help but didn´t find a solution.

How can I authenticate through the url?

Raspberry is running only with monitor attached.
In autostart is a shell script which opens chromium plus url

I need something like:
http://user:pass.zmip.com/index.php?view=watch&mid=3

Does it have something to do with the hash auth?

thanks in advance