Snapshot can't be loaded. Probably CGI question?

[Thijsvr]

I have a cheap Tenvis camera that I can view a snapshot of through:
http://x.x.x.x/web/snap.html

From there I was able to work back to this command:

http://x.x.x.x/cgi-bin/hi3510/snap.cgi
which gives me to the path to the temporary image: /tmpfs/snap_tmpfs/20180603/IMG001/IMG_chn0_TIMER_MNG_20180603105014_029.jpg

So I figured I would add the -getpic parameter and be done with it
http://x.x.x.x/cgi-bin/hi3510/snap.cgi?-getpic does indeed show me the snapshot, however that give me a result in Domoticz.

I've tried other commands and I've been searching for ages, but I think I'm missing something obvious.

Thanks in advance for your help!