ETSI TS 126 245-2018 Universal Mobile Telecommunications System (UMTS) LTE Transparent end-to-end Packet switched Streaming Service (PSS) Timed text format (V15 0 0 3GPP TS 26 245 .pdf
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1、 ETSI TS 126 245 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); LTE; Transparent end-to-end Packet switched Streaming Service (PSS); Timed text format (3GPP TS 26.245 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 126 245 V15.0.0 (2018-07)13GPP TS 26.245 versio
2、n 15.0.0 Release 15Reference RTS/TSGS-0426245vf00 Keywords LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803
3、/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior
4、 written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present do
5、cument should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one
6、 of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content
7、 of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its
8、Members. 3GPPTM and LTETMare trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 126 245 V15.0.0 (20
9、18-07)23GPP TS 26.245 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-m
10、embers, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursu
11、ant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present docu
12、ment. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or trade
13、name. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present do
14、cument may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/web
15、app.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of prov
16、isions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 126 245 V15.0.0 (2018-07)33GPP TS 26.245 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Sc
17、ope 5g32 References 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 6g34 Overview 6g35 Timed text format . 6g35.1 Unicode Support . 6g35.2 Bytes, Characters, and Glyphs 6g35.3 Character Set Support . 6g35.4 Font Support . 7g35.5 Fonts and Metrics . 7g35.6 Colour Suppor
18、t . 7g35.7 Text rendering position and composition . 8g35.8 Marquee Scrolling 9g35.9 Language 10g35.10 Writing direction 10g35.11 Text wrap 11g35.12 Highlighting, Closed Caption, and Karaoke . 11g35.13 Media Handler 11g35.14 Media Handler Header . 11g35.15 Style record 11g35.16 Sample Description Fo
19、rmat 12g35.17 Sample Format . 13g35.17.1 Sample Modifier Boxes 13g35.17.1.1 Text Style 13g35.17.1.2 Highlight . 14g35.17.1.3 Dynamic Highlight 14g35.17.1.4 Scroll Delay. 15g35.17.1.5 HyperText . 15g35.17.1.6 Textbox . 15g35.17.1.7 Blink 16g35.17.1.8 Text Wrap Indication 16g35.17.1.9 Stereo Disparity
20、 . 16g35.18 Combinations of features 16g3Annex A (informative): Change history . 18g3History 19g3ETSI ETSI TS 126 245 V15.0.0 (2018-07)43GPP TS 26.245 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the
21、 present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version
22、 x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third
23、 digit is incremented when editorial only changes have been incorporated in the document. The 3GPP transparent end-to-end packet-switched streaming service (PSS) specification consists of six 3GPP TSs: 3GPP TS 22.233 1, 3GPP TS 26.233 2, 3GPP TS 26.234 3, 3GPP TS 26.244 4, 3GPP TS 26.246 5 and the p
24、resent document. The TS 22.233 contains the service requirements for the PSS. The TS 26.233 provides an overview of the PSS. The TS 26.234 provides the details of protocol and codecs used by the PSS. The TS 26.244 defines the 3GPP file format (3GP) used by the PPS and MMS services. The TS 26.246 def
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