The emEXTEND-HDMI-SM is a set of miniature converter devices that converts HDMI into SDI over fiber optic, then converts it back to HDMI at the other end. This allows to carry HDMI over a very long distance. At one end, The Transmitter can accept HDMI signals in many different resolutions mapping automatically the image in a center of a 1920 x 1080 progressing scan raster. Audio first 8 channel are inserted in the SDI signal. At the other end, the Receiver accepts 720p, 1080p or 1080i signals and automatically creates an HDMI outputs. The first audio pair connects to the HDMI output. No configuration required.