Bandwidth question

Is it feasible to run a pair of one-universe gateways AND one stream of HDMI over ethernet on the same closed gigabit network? Am I likely to run into bandwidth issues?

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  • When you say HDMI over ethernet it depends on what you actually mean.

    There are a lot of HDMI over ethernet converters which are simply using the wires in the UTP ethernet cable to connect the two ends together (these typically have transformers (ballums) that help isolate signal noise - like balance mic connections do) If that the case it not actually a network connection at all and so those runs are just single purpose and cant be plugged into switches or anything normally thought of as a network.

    If you mean using an HDMI over TCP converter then its network signals and they can go through switches etc.

    Assuming it is the later then the amount of bandwidth used by a single universe on Artnet or sACN is only about 500K bps (and I'm rounding up a lot, assuming the 512 byte dmx packet with protocol wrappers is 1K and that it takes 10bits to send a byte on the ethernet).

    So that's only used less than 0.05% of your available 1Gbps network and your hdmi video shouldn't be using all of the 1Gbps.
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  • When you say HDMI over ethernet it depends on what you actually mean.

    There are a lot of HDMI over ethernet converters which are simply using the wires in the UTP ethernet cable to connect the two ends together (these typically have transformers (ballums) that help isolate signal noise - like balance mic connections do) If that the case it not actually a network connection at all and so those runs are just single purpose and cant be plugged into switches or anything normally thought of as a network.

    If you mean using an HDMI over TCP converter then its network signals and they can go through switches etc.

    Assuming it is the later then the amount of bandwidth used by a single universe on Artnet or sACN is only about 500K bps (and I'm rounding up a lot, assuming the 512 byte dmx packet with protocol wrappers is 1K and that it takes 10bits to send a byte on the ethernet).

    So that's only used less than 0.05% of your available 1Gbps network and your hdmi video shouldn't be using all of the 1Gbps.
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