Blackmagic Videohub 40x40 12G
Videohub 40x40 12G: sources, destinations, and formats
Ask GLMedia about rental options for live switching and image distribution. We review availability, configuration, and alternatives for your event.
Model and use
With the date, location, and intended use, we can review which equipment and combination can be offered. You can inquire before measurements, drawings, or the final schedule are ready.
Videohub 40x40 12G is a routing matrix: it selects which input reaches each output. A source can feed several destinations; transitions and compositions require the production equipment for that task.
The model supports different signal standards simultaneously. This does not mean it converts each source to a receiver’s format or synchronizes sources together.
Video, audio, and control
- Routing
- 40 inputs and 40 12G-SDI outputs. Label both ends: camera, program, or playback as source; monitor, switcher, or recorder as destination.
- Signal
- Output reclocking, without input resynchronization. The receiver must support the selected source format; also check embedded audio.
- Control
- Front panel buttons, knob, and preview display; external Ethernet control and software configuration. Select the correct router before changing a crosspoint.
What to prepare
Prepare a source/destination table, formats, and audio paths. Identify on-air outputs and routes available for rehearsal.
Start with a partial equipment list. We can map routing and identify conversion or synchronization needs before the final plan.
Basic preparation
- Confirm model, firmware, and control software. Preserve the installation crosspoint table and labels.
- Check a source on a compatible receiver and connect it to the assigned input. Use suitable cable for signal and distance.
- Select the intended destination first, then its source using the chosen control. Confirm the picture at that destination.
- Check every route with actual format, audio, and destination. A correct router preview does not confirm that the entire downstream chain is working.
- Rehearse source changes and receiver recovery before using the route on air. Separate operational routing from configuration or firmware changes.
Technical questions and show decisions
- The source appears on Videohub, but the destination has no picture: what should I check?
- Do reference or reclocking guarantee a clean switch?
- Why can I route but not change settings?
- When should I rent a router, and when do I need a production switcher?
- How do I prepare different screen, recording, and streaming routes for the same show?
The source appears on Videohub, but the destination has no picture: what should I check?
Check output assignment, cable, and receiver-supported format. A UHD source does not become HD by passing through the router.
If another format is needed, prepare suitable conversion and verify its output before revisiting the crosspoint.
Do reference or reclocking guarantee a clean switch?
This model’s specifications list no input resynchronization. Reclocking and reference are not a frame synchronizer.
For visible live changes, rehearse sources and receiver or transition in the production system prepared for that task. Do not assume CleanSwitch functions.
Why can I route but not change settings?
Crosspoint control and configuration are different functions. Identify application, version, connection, and selected router.
Preserve settings and check version documentation before updating or restarting. A ping reply does not establish access to every administration function.
When should I rent a router, and when do I need a production switcher?
A router assigns sources to destinations. It helps organize camera, program, and playback paths without repatching cables for every assignment. If the change is visible to the audience, define the intended result and rehearse each receiver’s recovery.
Transitions, compositions, or sources needing synchronization require the appropriate production and processing equipment. We can quote routing alone or a chain with those functions; selection follows the running order and actual formats, rather than connector count alone.
How do I prepare different screen, recording, and streaming routes for the same show?
Start with destinations and what each should receive: program, a camera, or playback. Add supported format, embedded audio, and whether the route stays fixed or changes during the show. Test each output at its receiver, including any required conversion.
We can prepare labels, a routing table, configuration, rehearsal, and operation within the agreed scope. Agree critical outputs and alternatives for a missing source. The router alone does not create a separate streaming mix or recording; those destinations need their planned equipment and signal paths.
Checks by symptom
| Symptom | Check | What it helps distinguish |
|---|---|---|
| No destination picture | Crosspoint, cable, and receiver format. | Routing or compatibility. |
| Pause on source change | Synchronization and receiver recovery. | Switching or downstream processing. |
| No Setup access | Application, version, and connection. | Administration or crosspoint control. |
Limits and precautions
Label critical outputs and agree which routes may change during operation. A crosspoint change affects its selected destination.
Schedule disconnections and updates outside event operation. Save the configuration and prepare a recovery procedure before changing versions.
Prepare cooling, rack support, and power for the equipment. Dual power supplies require an appropriate system power design for redundancy.
Official documentation
Check the actual model and system versions before applying settings.
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