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Amazon.com: HDMI to SDI Converter, Micro Converter One HDMI in Two SDI Output (with Power Supply Adapter, Audio Embedder Support HDMI 1.3, 3G/HD- SDI Auto Format Detection Extender for Camera CCTV : Electronics
Black Box HDMI to 3G-SDI HD-SDI Converter (VSC-HDMI-SDI)
SDI to HDMI Converter Box, BNC to HDMI Adapter, HD-SDI, SD-SDI, 3G-SDI
SDI-12 USB Adapter from LiuDr Electronic Solutions LLC on Tindie
BLACKMAGIC Mini Converter HDMI to SDI 6G - VideoExpert.eu
Laird Digital Cinema RED ONE 3G SDI to BNC-F Adapter Cable (Black) - Walmart.com
3G SDI to HDMI Adapter Converter - Video Converters | StarTech.com
1080P to SDI Converter Adapter Coaxial Cable Video Audio Extender HD to BNC SDI/HD-SDI/3G-SDI - Walmart.com
Amazon.com: SDI to HDMI, 3G-SDI/HD-SDI/SD-SDI to HDMI Converter Adapter,SDI in HDMI out, SDI in SDI out Loopout 1080P @60Hz Video Audio Splitter, Auto Format Detection and Stereo Audio De-embedder, Support HDCP :
Kanex Pro EXT-HDSDIX HDMI to 3G HD SDI SDI Converter - Pro AV Warehouse