1、 Recommendation ITU-R BT.2038(07/2013)Transport of HDTV 3DTV programmesfor international programmeexchange in broadcastingBT SeriesBroadcasting service(television)ii Rec. ITU-R BT.2038 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical u
2、se of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by World a
3、nd Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used for t
4、he submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of
5、ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodeterminatio
6、n, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management SNG Satellite
7、news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2013 ITU 2013 All rights reserved. No part of this publication
8、 may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R BT.2038 1 RECOMMENDATION ITU-R BT.2038 Transport of HDTV 3DTV programmes for international programme exchange in broadcasting1(2013) Scope This Recommendation specifies the preferred method for transporting HD
9、TV-based 3DTV programmes using bit rate reduction for various purposes related to international programme exchange. The ITU Radiocommunication Assembly, considering a) that Recommendation ITU-R BT.2024 specifies the HDTV image systems to be used for the production and international exchange of 3DTV
10、television programmes for broadcasting; and it recommends that the Le and Re images2of a 3DTV image pair should be internationally exchanged as two full-resolution 1 920 1 080 images having the same pixel structure and picture repetition rate; b) that Recommendation ITU-R BT.2027 specifies the HDTV
11、serial digital interface to be used for the transport of uncompressed HDTV-based 3DTV television programmes in production and international exchange; c) that Recommendation ITU-R BT.1662 provides guidelines on the management of television image quality post-processing headroom along a generic televi
12、sion chain (from image acquisition to image presentation); d) that Report ITU-R BT.2069-4 indicates the data rate normally required to source-code monoscopic television programmes for purposes of contribution (which includes international exchange), primary distribution and SNG network for broadcast
13、ing, using the source-coding method specified in Recommendation ITU-T H.264 (MPEG-4 AVC); e) that Recommendation ITU-T H.264 provides specifications for source-coding of 3DTV signals, offering improved efficiency by exploiting the redundancy between the left-eye (Le) and the right-eye (Re) signals;
14、f) that there will be benefits in terms of programme image quality, if 3DTV television programme material will be internationally exchanged in transparent source-coded form3in those cases whenever the programme material may need to undergo significant4image post production at the receiving end, befo
15、re it is broadcast; 1In the context of this Recommendation, the term 3DTV is used to convey a stereoscopic image or image pair. 2Le and Re are abbreviations for Left eye, and Right eye, respectively. 3The ITU-R Terminology database defines “transparent bit-rate reduction” as “a bit-rate reduction pr
16、ocess that does not affect the subjective quality of sound or picture sequences”. In this document, the term subjective quality includes all the attributes of a stereoscopic image including its ability to reproduce transparently the depth information of the original scene. 4“Significant post product
17、ion” would be described as a signal post processing such as colour correction or image rescaling or post production through devices using more than one intermediate bit rate reduction process. 2 Rec. ITU-R BT.2038 g) that, in those cases when the programme material may require no or only a modest5am
18、ount of image post production at the receiving end before it is broadcast, there will be benefits in terms of the required data rate, if 3DTV television programmes will be internationally exchanged in source-coded form at the quality level typical of contributions6; h) that, in those cases when cons
19、iderations of data rate override considerations of picture quality, as it may be the case of an ENG or SNG contribution to a news programme, some compromises in picture quality may need to be accepted in the international program exchange in order to reduce the data rate required to deliver such a c
20、ontribution, recommends 1 that, when it is necessary to transport HDTV-based 3DTV programme material in a virtually transparent or quasi-transparent form using a reduced bit rate, the 1 920 1 080 signals of Recommendation ITU-R BT.2024 should be source-coded as specified in Recommendation ITU-T H.26
21、4 (MPEG-4 AVC), at least until more efficient source coding methods will be widely introduced in broadcasting operations; 2 that, the source-coding method should meet, but preferably exceed, the indications contained in Report ITU R BT.2069-4 for virtually transparent, or quasi-transparent MPEG-4 AV
22、C source-coding of monoscopic television programmes (see Notes 1 and 2); the source-coding separately applied to both Le and Re image signals should not introduce perceived picture quality difference between the two images; following source-coding, the Le and Re image signals may be transported in a
23、 Multi-Programme Transport Stream (MPTS), or they may be transported in two separate transport streams; the relative timing between Le and Re signals should be maintained after encoding, transporting and decoding; 3 that, in those cases of international programme exchange when it is necessary to use
24、 the lowest possible data rate, as it may be the case of an ENG or SNG for a broadcast news programme: the appropriate source-coding method specified in Recommendation ITU-T H.264 (MPEG-4 AVC) for 3DTV applications should be used, that offers the highest-efficiency source-coding of the Le and Re ima
25、ge signals, while preserving a picture quality adequate for programme distribution7by exploiting the redundancy between the two signals; the relative timing between Le and Re signals should be maintained after encoding, transporting and decoding; NOTE 1 Informative Annex 1 provides a general estimat
26、ion of the minimum bit rate typically to be expected from source-coding 3DTV programmes for purposes of international programme exchange, for the applications described above. 5“Modest post production” would be described as signal post processing limited to cuts or re-ordering or processing requirin
27、g no further or intermediate bit rate reduction. 6The ITU-R Terminology database defines “contribution” as “the use of a broadband service or channel for transferring audio or video information to a user for further post-production processing and subsequent distribution”. 7Recommendation ITU-R BT.16
28、87 defines the term “distribution” as “the carriage of television programs for which no further post-production processing is expected”. Rec. ITU-R BT.2038 3 NOTE 2 It is likely that the source-coding method specified in Recommendation ITU-T H.262 (MPEG-2) will not be widely used to source-encode 3D
29、TV programme material for international programme exchange, for reasons of data-rate economy. Annex 1 (Informative) Estimation of the data rate required when source-coding 3DTV television broadcasting programmes in virtually transparent and quasi-transparent form for international programme exchange
30、 The table in this informative Annex provides an approximate estimate of the bit rate that would typically be required when source-coding 3DTV programmes in virtually transparent and quasi-transparent form for international exchange, when the left-eye (Le) and the right-eye (Re) images of the 3DTV p
31、rogramme are separately source-coded. The table does not take into account the option to exploit the redundancy between the Le and the Re image signals, since that option should preferably only be used for distribution purposes and for the transport of ENG/SNG signals. 3DTV image system Bit rate red
32、uction Level Profile Estimation of required bit rate (Mbit/s)for each image signal 1 9201 080/60/50/I H.264/AVC 4 High 4:2:2 35 or greater where no or modest post production processing is required or 60 or greater where complex post production processing is required 1 9201 080/24/25/30/P H.264/AVC 4
33、 High 35 or greater no or modest post production processing is required or 60 or greater where complex post production processing is required 1 9201 080/60/50/P H.264/AVC 4.2 High 50 or greater where no or modest post production processing is required or 90 or greater where complex post production processing is required or both _
