The video will be encoded using HEVC (High Efficiency Coding)/H.265) encoders that will compress 72Gbps 8K signals to 85Mbps for easy transmission. Decoding will be done in real-time.
The system uses an MMT (MPEG Media Transport) digital container standard to transmit multiple channels. Coding and decoding of 22.2-multi channel audio will be performed using the MPEG-4 AAC (Advanced Audio Coding) standard. Video and audio will be modulated using the 16APSK (Amplitude and Phase Shift Keying - transmission of 4 bits of information through the use of 16 amplitudes and phase shifts) scheme and will be transmitted at roughly 100Mbps.
The Japanese broadcaster anticipates to start actual testing of 8K broadcasts in 2016.