AJA Corvid 3G review

AJA’s Corvid 3G is an earlier OEM PCIe video I/O board for SDI systems. It is related to the original Corvid/Corvid 1 but is a distinct model: AJA documents a video-processing mixer/keyer module and 2K/3G capability for the 3G board, while Corvid 1 stops at 1080p30 and lacks that 3G-only processing feature. Both are discontinued and AJA identifies KONA 1 as their successor. This assessment is best used for an existing broadcast or post-production system, not as a claim that the board is a current consumer capture solution.

What the 3G label changes

The model-specific AJA sheet lists 3G-SDI input and output, including SD, HD and 2K timings. Its HD table includes 1080p50/59.94/60; its 2K list ends at 25p. The NTV2 device reference identifies one SDI input, one SDI output, reference, LTC and RS-422. That is a one-source input path with a separate output connection, not a four-channel card. AJA also documents one audio system with up to eight channels. The 3G board has additional frame-buffer support for 2K, VANC and 16-bit RGB, and a hardware color-space converter for YCbCr SDI to/from RGB buffer use. These are developer I/O details, not a blanket picture-quality guarantee.

There is no HDMI socket, so an HDMI-only camera or game console needs a compatible SDI conversion stage. Do not assume the SDI output is a direct pass-through: the technical pages describe input and output I/O, but do not provide a consumer display-path matrix. No 4K capture, HDMI HDR, VRR or rate-specific OBS mode is established. If a 1080p60 SDI capture path is the requirement, the published mode table supports that timing; an exact workstation, driver, application and signal format still need their own checks.

Legacy host compatibility

The board uses four-lane Gen 1 PCIe. AJA’s current SDK device page retains a legacy entry and records Mac OS SDK support from an early release, with the hardware feature set feature-complete in SDK 15.0. That provides a specific historic reference, not broad compatibility with every later operating system. The exact supported driver, motherboard, application API and firmware must be confirmed for an installed system before a replacement board is sourced. This site does not claim personal testing, ownership or independent latency measurements.

The AJA product page marks Corvid 3G discontinued, and the NTV2 documentation says Corvid and Corvid 3G reached end of life in 2018. Its card image also looks very similar to Corvid 3G Fiber; the Fiber model is a separate signal-transport edition with fiber connectors and must not be substituted. Inspect the actual connector bracket and model code, not just a seller’s “Corvid” title. A used package may be missing control or reference cabling, and the documents do not establish any particular listing’s condition.

Who should compare it

Compared with Corvid 1, the 3G version adds higher-rate HD, 2K, mixer/keyer processing and RGB buffer/color conversion support, while retaining a single SDI input/output pair. Compared with the Corvid 22, it has fewer documented independent SDI channels but a different feature set and connector plan. The latter has two fixed SDI inputs and two outputs; it is not an equivalent one-for-one substitution. These legacy boards suit integrators matching an exact older workflow; they are poor choices for simple USB streaming, current HDMI consoles or users who need a current OS/application guarantee.

Before considering an offer, verify that it is the non-fiber Corvid 3G, check the SDI timing and any 2K workflow, confirm a usable PCIe slot and supported AJA SDK/OS, and budget for required converters and cables. The product identity and format ceiling can be documented; current retailer availability and a working second-hand installation cannot be inferred from the manufacturer page.