Port 9000
In live entertainment systems, port 9000 is used by Ember+, SRT (Secure Reliable Transport).
tcp/9000
Ember+ — Ember+ provider, common default
Open control and monitoring protocol from Lawo, widely adopted across broadcast for exposing device parameters as a browsable tree that any controller can read and set.
udp/9000
SRT (Secure Reliable Transport) — Common default, but SRT has no fixed port: it is set per stream
Open-source low-latency video transport designed to carry contribution-quality streams over unmanaged networks, recovering lost packets with ARQ inside a configurable latency budget. The standard way a live feed leaves a venue over the public internet.
Check it from the command line
npx showstack port 9000
Not what you were looking for?
If you know something else uses port 9000, tell us. Adding it is one file.