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Jul 01, 2025

Rockchip RK3588 4K video encoder features four SDI inputs, four SDI loop outputs - CNX Software

Mekotronics R58-4×4 3U is yet another device based on Rockchip RK3588 from the company, but this product is a 4K video encoder with four SDI inputs, and four SDI loop outputs mirroring the SDI inputs.

Mekotronics R58-4×4 3U is yet another device based on Rockchip RK3588 from the company, but this product is a 4K video encoder with four SDI inputs, and four SDI loop outputs mirroring the SDI inputs.

SDI (Serial Digital Interface) inputs are used for transmitting uncompressed, unencrypted digital video signals and typically found in professional video production and broadcasting environments. The SDI interface can also be found in security cameras like the MOKOSE SHD50-2.8-12MM and I can also see it used in cameras designed for live streaming on YouTube, or other services. The main advantages of SDI over interfaces like USB, HDMI, or Ethernet, are that it can use longer cables up to 300 meters, offers better signal integrity, and has near zero latency. Compatibility for professional camera equipment is another advantage.

Let’s look at the Mekotronics R58-4×4 3U specifications:

Mekotronics provides Android 12, Debian, and Armbian-built Debian/Ubuntu images for the video recorder. There’s also a Linux program called “Play&Record Video” demonstrated in the video below. In that video, Mike tested the solution with an external HDMI to SDI converter (Blackmagic HDMI to SDI 12G) to connect an HDMI source to the SDI 12G input of the R58-4×4 3U.

Mekotronics R58-4×4 3U 4K video encoder is sold on Made-in-China for $735 with an MOQ of 10 pieces. That’s quite more than expected for a Rockchip RK3588 device, but the high cost is likely due to the four SDI to MIPI CSI converters inside the device, and it’s a niche market… A few more details may also be found on the product page.

Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.

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