Datavideo DAC-45 4K Up/Down/Cross Converter4K Up Conversion With built in super resolution engine, users can now up convert from SD 480 resolution all the way to 4K resolution with excellent image quality and sharpness. External audio embedding. RCA inputs allow audio to be embedded to the output of the video signal. Supports 3G SDI Level A B With the 3G SDI system, it supports both 3G SDI Level A B input. Wide range conversion for great compatibility Supports VGA HDMI SDI to 4K HDMI 3G SDI