The SDI Audio Embedder from SWIT is a portable mini converter of SDI audio embedder that supports digital and analog audio. It allows you to embed audio to any two channels of the SDI first eight-channel positions. It is designed for use in broadcast field production and professional audio/video conversion and transmission. 1/4"-20 screw threads are provided on the bottom for fixing the embedder on to a camera. This embedder provides three LED indicators which show if the unit is powered, if the SDI input is recognized, and presence of new embedded SDI outputs. A mounting plate is included for installing the embedder on a wall, and for binding the BNC/audio cables.
 
https://www.bhphotovideo.com/c/product/1202778-REG/swit_s_4610_portable_sdi_audio_embedder.html/overview