
Blackmagic Design
Blackmagic Design CONVBDC/SDI/HDMI12G Micro Converter BiDirectional 12G
★★★★★
The Blackmagic Micro Converter BiDirectional 12G bridges SDI and HDMI simultaneously in both directions — keeping 12G signal chains intact without a rack full of dedicated converters.
$185.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Key Features
Micro Bidirectional Video Convertor for SDI
SD Devices
HD
Specifications
SDI Video Inputs
1 × BNC
SDI Video Outputs
Automatically matches HDMI video input
HDMI Video Inputs
1 × Type A HDMI 2.0
HDMI Video Outputs
1 × Type A HDMI 2.0
Supported Standards
SD, HD, 2K, Ultra HD, 4K (auto detection)
SDI Bandwidth
12G
SDI Re-Clocking
Yes
HDMI Timecode Support
Yes
Conversion Direction
Simultaneous bidirectional (SDI↔HDMI)
Pros & Cons
👍 Pros
- Simultaneous bidirectional conversion means one unit handles both directions of a signal bridge — a rack efficiency and budget advantage over pairing two dedicated converters.
- 12G-SDI support carries 4K up to 60fps over a single BNC cable, which simplifies wiring in 4K production environments where quad-link SDI would otherwise be required.
- SDI re-clocking regenerates signal integrity on long cable runs, protecting downstream devices from jitter and timing artifacts that accumulate over distance.
- HDMI timecode passthrough preserves sync data across the conversion, keeping multi-camera timecode alignment intact through the signal chain.
- Auto-detection across SD, HD, 2K, UHD, and 4K standards means the converter adapts to mixed-format productions without manual configuration.
👎 Cons
- The micro form factor, while space-efficient, offers limited physical I/O — one SDI and one HDMI port per direction means no loop-through or additional feed outputs without adding more hardware.
- No built-in frame rate conversion — sources and destinations must share compatible frame rates, or the converter will not produce a usable output.
- Power input details are not prominently specified, which can complicate pre-production planning for field deployments where specific voltage or connector types are required.
- No audio mixing or routing controls are exposed on the unit — audio embedding and de-embedding behavior is automatic, with no adjustable parameters.
Frequently Asked Questions
What does "bidirectional" mean in a production context, and why does it matter on set?
Bidirectional means the converter handles SDI-to-HDMI and HDMI-to-SDI conversion simultaneously in both directions — a single unit replaces two dedicated one-way converters in a signal chain. On set, this reduces rack space, cable runs, and points of failure when feeding a monitor from an SDI source while also returning an HDMI signal to a recorder or switcher.
What video standards does the 12G BiDirectional converter support?
The converter auto-detects SD, HD, 2K, Ultra HD, and 4K video signals. The 12G designation means it can handle 12G-SDI bandwidth, which supports 4K at up to 60fps over a single BNC cable — eliminating the need for quad-link SDI configurations that 4K previously required.
What does SDI re-clocking do, and when does it matter?
SDI re-clocking regenerates a clean, properly timed signal from the incoming SDI stream before conversion. On long cable runs — where signal jitter and timing errors accumulate — re-clocking restores signal integrity and prevents the artifacts that a degraded signal would introduce downstream. For cable runs exceeding 30–40 meters, re-clocking is the difference between a clean output and a noisy or dropped signal.
Does the converter pass timecode from HDMI sources to SDI outputs?
Yes — the converter supports HDMI timecode passthrough to the SDI output. This is significant for multi-camera productions where timecode sync is required for post-production alignment. HDMI devices that embed timecode will have that timecode preserved in the converted SDI stream.
How is the converter powered, and can it be used in a mobile rig?
Power requirements are not detailed in the provided specifications — consult Blackmagic Design's official product page for power input details. The unit's micro form factor makes it physically suitable for mobile and field rigs where rack space is unavailable, and it can be mounted directly into cable runs or behind monitors.