Answer for ports need to be opened for evostream work properly?

RTSP won’t multicast, it will be unicast. The UDP ports are negotiated dynamically during the RTSP handshake, they are not set anywhere. I would recommend opening up all ports for UDP to see if that fixes the problem. (or just use RTP since it is working!) The problem may not be related to port blocking. It may be that the UDP is not making it across the open internet.

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