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
12G/6G/3G/HD-SDI to HDMI 2.0 Converter with Audio Extractor (PRO-SDIHD2)
Mini Converters – Tech Specs | Blackmagic Design
Amazon.com: Blackmagic Design SDI to HDMI Micro Converter, Without Power Supply : Electronics
BG-4KSH 4K UHD 12G-SDI to HDMI Converter w/ Audio Extraction
Blackmagic Design Micro Converter BiDirectional SDI to HDMI 3G - Micro Center