FLOW 4K converts 1 channel of 12G-SDI or HDMI 4K60 and below video sources into any format specified by the user in the range of HD to 4K60 and output through the SDI/HDMI port. It is the up-down conversion of the 12G-SDI/HDMI2.0, currently supports at least 35 types SMPTE standard formats and support PAL/NTSC standard, and will gradually upgrade more functions according to the firmware released by ScienceImage.