Blackmagic Design CONVCMIC/HS Video Converter
- HDMI to SDI, one direction only
- 2 SDI outputs, auto matches SD, HD or 3G-SDI
- Up to 1080p60, multi rate auto detection
- HDMI Type A input, Level A and Level B support
- Micro USB for updates, configuration and power
- 4.4 to 5.25 volts supply range
- Power supply not included
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact bridge for feeding HDMI gear into an SDI chain, and it needs no separate brick because it can run over USB. The missing power supply and the one-way conversion are the two things to plan around.
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ASIN: B077QQSP5NCategory: Video Converters
Overview
Convert the HDMI output of a laptop or consumer camera into SDI for broadcast switchers, routers and monitors. The converter reads the incoming signal and switches itself between SD and HD formats, then feeds two SDI outputs. A micro USB port carries updates, configuration and power.
What makes this unit useful is the automatic format matching combined with two SDI outputs, so a single HDMI source can reach more than one destination in a broadcast chain. Level A and Level B equipment are both supported. The limitation is direction: SDI coming in will not come out as HDMI, and the box arrives without a power supply.
Who it's for
A production setup where the source device only offers HDMI and the rest of the chain speaks SDI, with two destinations to feed. A workflow that runs the other way wants a different converter, and anyone expecting a power adapter in the package will be disappointed.
Pros and cons
- Two SDI outputs from one HDMI source
- Automatic SD and HD format matching
- Level A and Level B equipment supported
- Powered over micro USB
- Power supply not included
- Converts HDMI to SDI only
- No SDI to HDMI path
- Maximum resolution not listed
Performance notes
The converter reads the incoming HDMI signal and sets its SDI output to match, so the downstream router or monitor receives a format it already expects. Two outputs let the same feed reach separate destinations without a splitter. Power over micro USB removes the need for a separate adapter, but the cable and source of that power are the user's to supply.
Specifications
| Brand | Blackmagic Design |
|---|---|
| Brand Tech | Blackmagic Design |
| Item Weight | 150 pounds |
Frequently asked questions
Will this converter work with a curved monitor or an unusual HDMI source?
The input is a standard HDMI Type A connector, and the unit auto detects SD or HD on that input. It matches the SD, HD or 3G-SDI formats it supports, so a source sending something outside those formats is not covered by the listed specs.
Does the converter come with a power supply?
No. The listing names it as the version without a power supply. Updates, configuration and power all run through the micro USB port, so that connection is how the unit is fed.
Can I use it to turn SDI into HDMI?
No. The signal path runs one way, from HDMI in to SDI out. An SDI source cannot be displayed on an HDMI monitor through this unit.
What can I plug into the HDMI input?
The listed compatible devices are cameras, laptops and monitors. The HDMI Type A input takes the output of a consumer camera or a laptop, which is then converted for broadcast switchers, routers and monitors.
How many SDI devices can I connect at once?
Two. The converter provides two SDI outputs, and both carry the same converted signal with Level A and Level B equipment supported.