A/341, “Video – HEVC”Approved: 14 April 2026

This Standard describes the video coding constraints on ITU-T Rec. H.265 | International Standard ISO/IEC 23008-2 (“HEVC”) when it is used for video compression in the ATSC 3.0 Digital Television System. Any other video coding technologies in the ATSC 3.0 system are documented in their own ATSC Standard(s). A/300 provides references to the various video coding technology document(s) in the ATSC 3.0 system. Signaling of the video compression technology in use is defined A/331.

Download current version: A/341:2026-04, “Video – HEVC”, 14 April 2026. This version of the Standard is normatively referenced in A/300:2026-04.

Previous Versions

There are multiple versions of this document. Please be sure to download the desired version. For amendments, the text includes a list of changes, the rationale for the changes, and compatibility considerations. The following documents are listed by date, with the most recent first.

2025

Download A/341:2025-07, “Video – HEVC”, 17 July 2025. This version of the Standard is normatively referenced in A/300:2025-07.

2024

Download A/341:2024-04, “Video – HEVC”, 3 April 2024. This version of the Standard is normatively referenced in A/300:2024-04.

2023

Download A/341:2023-03, “Video – HEVC”, 28 March 2023. This version of the Standard is normatively referenced in A/300:2023-03.

2022

Download A/341:2022-09, “Video – HEVC”, 7 September 2022.

Download A/341:2022-03, “Video – HEVC”, 31 March 2022. This version of the Standard is normatively referenced in A/300:2022-04.

Download A/341:2022-03 Amendment No. 1, “Chroma Location / AFD and Bar Data”, approved 7 September 2022.

2021

Download A/341:2021, “Video – HEVC”, 17 September 2021. This document is a rollup of Amendments No. 1 and No. 2 to A/341:2019.

Download A/341:2019, “Video – HEVC, with Amendment No. 1”, 2 March 2021. This document has Amendment No. 1 integrated into the standard. This version of the Standard is normatively referenced in A/300:2021.

2019

Download A/341:2019, “Video – HEVC”, approved 14 February 2019. This version of the Standard is normatively referenced in A/300:2019 and A/300:2020.

Download A/341:2019 Amendment No. 1, “References”, approved 2 March 2021.

Download A/341:2019 Amendment No. 2, “2094-40”, approved 17 September 2021.