First, it is necessary to change the format of the secondary stream to MJPG.
Leave port 80 as the default http port.
The only condition is that only one connection is allowed at a time, this for home automation applications can be useful but for web can be a drawback.
Also, remember that it doesn't work in Internet Explorer
_COPY2@172.18.223.64/Streaming/channels/102/httpPreview
All the cameras that appear in the following search have this system with the limitation that we have mentioned
https://www.visiotechsecurity.com/es/search?keyword=DS-2CD2
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Requesting an mjpg image from a SAFIRE recorder or camera via HTTP