RTMP pass through???

[lomfs24]

Goal: take an RTMP stream and send it back out to RTMP.

Many of the tutorials I see on this have a stream sent to the (in this case) Raspberry Pi. Then it is sent back out to another RTMP service. However, I have a camera that is broadcasting RTMP on a specific URL, that I cannot change. So I need NGINX to go to rtmp://10.1.64.120/someURL bring that stream in and send it back out. And I am not sure how to configure that.

I have an AI sports camera in the gym, and football field. They are the Hudl Focus brand. When in game mode they produce an RTMP stream that can be accessed by something like OBS. Our State says we have to broadcast our games on the NFHS network. So I would like to set a RPi up as a bridge that takes the stream from the camera and send it to NFHS.

Is it possible to make NGINX go get that stream from the camera, rather than having the camera send to the RPi? I cannot change where the camera sends to