Datavideo DAC-45 4K Up/Down/Cross converter: 4K Up/Down/Cross converter designed to convert video signals from VGA, HDMI, SDI with Audio input to 4K HDMI or 3G-SDI output. It allows instant switching between 4K, HD and SD video formats.HDMI 2.0 input/output with 4: 2: 2 processingSupports 3G-SDI Level A/B, Reference input BB and Tri Level SyncBuilt in Super Resdolution Engine for 4K Up scaling and frame rate conversion