A non-transitory computer readable medium storing a program which, when executed, causes a computer to execute:
- receiving a Moving Picture Experts Group (MPEG) Media Transport Protocol (MMTP) packet,
- wherein the MMTP packet includes packet ID information, sequence number information, time stamp information, leap second event information and at least a part of a Media Processing Unit (MPU), wherein the packet ID information identifies the MMTP packet,
- wherein the sequence number information identifies the MPU,
- wherein the time stamp information refers UTC (Coordinated Universal Time),
- wherein the leap second event information indicates a leap second event,
- wherein the MPU includes a video asset and/or an audio asset,
- wherein a timing of presenting video and audio is based on the leap second event information, and
- wherein the MMTP packet is delivered on a plurality of transmission paths including a communication line and radio waves.