HTTPS cannot change default port 443

[ktyntang]

am facing some issues converting rtsp to https. works fine over http using example 8083 port.

autotls.Run function in apiHTTPRouter.go uses import gin-tonic/autotls but seems like it is not longer maintained and unable to use any port other than 443.
gin-gonic/autotls#33
gin-gonic/autotls#39

is there a way to set a custom port for the https connection instead of 443? Changing to 443 is not an option as it is a reserved port.