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ITU-T H.721 (V3) (03/2022)

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IPTV terminal devices: Basic model
Recommendation ITU-T H.721 describes and specifies the functionalities of the Internet protocol television (IPTV) terminal devices for the IPTV basic services defined in Recommendation ITU-T H.720. This Recommendation is targeted at IPTV terminal devices capable of receiving linear television (TV) service and video-on-demand services, with additional data content (such as text) using a managed content delivery network. The service definition takes into consideration conditions on content delivery such as quality of service (QoS). The expected types of IPTV terminal devices are set-top boxes and digital TV sets with embedded IPTV capabilities.
The second edition introduced support for high efficiency video coding (HEVC), dynamic adaptive streaming over HTTP (DASH), MPEG-4 audio lossless coding (ALS), MPEG-4 advanced audio coding (AAC), DTS-HD, timed text markup language (TTML), MPEG media transport (MMT) and several corrections and clarifications.
The third edition introduces support for new technologies such as timestamped fragmented time-length-value (TFT).
Citation: https://handle.itu.int/11.1002/1000/14952
Series title: H series: Audiovisual and multimedia systems
  H.700-H.799: IPTV multimedia services and applications for IPTV
  H.720-H.729: IPTV terminal devices
Approval date: 2022-03-16
Provisional name:H.IPTV-TDES.2
Approval process:AAP
Status: In force
Maintenance responsibility: ITU-T Study Group 16
Further details: Patent statement(s)
Development history
[13 related work items in progress]
Ed. ITU-T Recommendation Status Summary Table of Contents Download
3 H.721 (V3) (03/2022) In force
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2 H.721 (04/2015) Superseded
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1.1 H.721 (2009) Amd. 1 (07/2010) Superseded
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1 H.721 (03/2009) Superseded
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