MPEG-H

MPEG-H is a group of international standards under development by the ISO/IEC Moving Picture Experts Group (MPEG). It has various "parts" – each of which can be considered a separate standard. These include a media transport protocol standard, a video compression standard, an audio compression standard, a digital file format container standard, three reference software packages, three conformance testing standards, and related technologies and technical reports.[1][2][3][4][5] The group of standards is formally known as ISO/IEC 23008 – High efficiency coding and media delivery in heterogeneous environments.[1][2][3][4][5] Development of the standards began around 2010, and the first fully approved standard in the group was published in 2013.[2] Most of the standards in the group have been revised or amended several times to add additional extended features since their first edition.

MPEG-H consists of the following parts:[3][6]

• Part 1: MPEG Media Transport (MMT) – a media streaming format similar to the Real-time Transport Protocol that is adaptable to different networks[1][6][7]
• Part 2: High Efficiency Video Coding (HEVC, jointly developed with the ITU-T Video Coding Experts Group and also published as ITU-T H.265)[2][8][9] – a video compression standard that doubles the data compression ratio compared to H.264/MPEG-4 AVC[6][8][9][10]
• Part 3: 3D Audio[3] – an audio compression standard for 3D audio that can support many loudspeakers[6]
• Part 4: MMT Reference and Conformance Software (not yet published)
• Part 5: Reference Software for High Efficiency Video Coding[4] (also published as ITU-T H.265.2)[11]
• Part 6: 3D Audio Reference Software
• Part 7: MMT Conformance (not yet published)
• Part 8: Conformance Specification for HEVC[5] (also published as ITU-T H.265.1)[12]
• Part 9: 3D Audio Conformance Testing
• Part 10: MPEG Media Transport Forward Error Correction Codes
• Part 11: MPEG Media Transport Composition Information
• Part 12: Image File Format – a.k.a. High Efficiency Image File Format (HEIF), based on the ISO base media file format
• Part 13: MPEG Media Transport Implementation Guidelines (a technical report rather than a standard)
• Part 14: Conversion and Coding Practices for HDR/WCG Y′CbCr 4:2:0 Video with PQ Transfer Characteristics (a technical report also published as ITU-T H-series supplement 15)[13]
• Part 15: Signalling, backward compatibility and display adaptation for HDR/WCG video (a technical report also published as ITU-T H-series supplement 18)[14]