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[Ques]Blackmagic Video Hub TCP Routing

PostPosted: Tue May 20, 2025 10:50 am
by Christopher_Povey
Hi,

We have Blackmagic Video Hub 20x20. I understand to connect an SDI IN xx to and SDI OUT xx to each other I need to send a TCP command:

Code: Select all
VIDEO OUTPUT ROUTING:
<out port> <in port><LF>
<LF>


The manuals say that the indexing is zero based. So to connect SDI IN 3 to SDI OUT 20 I would send:

Code: Select all
VIDEO OUTPUT ROUTING:
19 2<LF>
<LF>


I could not see any way (from the manual) to disconnect all routes. An internet search said just call the "VIDEO OUTPUT ROUTING" command linking each SDI IN port to 0 (zero). The page suggesting the ports indexing was one based, so zero is disconnected.

Executing "VIDEO OUTPUT ROUTING:<LF>" on returns all the output ports and their connections. The numbering is 0 (zero) to 19.

So my question: Can you disconnect every SDI IN port from a SDI OUT port? If so how (using TCP commands only)?

Thanks.

Christopher Povey

Re: [Ques]Blackmagic Video Hub TCP Routing

PostPosted: Sat May 24, 2025 11:32 am
by Peter Schuster
You cannot "disconnect" an output in a Videohub from any/all inputs.

An output is always "connected" to exactly one input. This is how Videohub works and independent of the control protocol.