just:in mac offers increased performance and stability for UHD recording workflows. You can now record multiple UHD Channels on one machine in 8/10-Bit Video mode, depending on the macOS, Apple hardware model, codec/container option and video device.
Apple ProRes (MOV)
Avid DNxHR (MXF)
H.264 (MP4 and MOV)
just:in mac will not convert any color space information, it will check the color space of the incoming signal and use it for the recordings accordingly.