The Lynx Technik yellobirck HD-1802 HDMI to SDI Converter is a small HDMI-SDI converter. It is an excellent choice for any application that necessitates a broadcast-quality SDI signal produced from an external HDMI source. Any audio in the HDMI stream will be incorporated into the corresponding SDI output channels. The module is also compatible with the yello GUI software package, which gives you access to a slew of other internal options Technical Specifications.