1、 ETSI TR 126 902 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Video codec performance (3GPP TR 26.902 version 14.0.0 Release 14) floppy3TECHNICAL REPORT ETSI ETSI TR 126 902 V14.0.0 (2017-04)13GPP TR 26.902 ver
2、sion 14.0.0 Release 14Reference RTR/TSGS-0426902ve00 Keywords GSM,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)
3、 N 7803/88 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 th
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5、sent document 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
6、 to one 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
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8、de Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TR 126 902 V14.0.0 (2017-0
9、4)23GPP TR 26.902 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
10、 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/). Pursuant to the ETSI IPR Poli
11、cy, 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 document. Foreword This Tech
12、nical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document 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 deliv
13、erables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in
14、 clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 126 902 V14.0.0 (2017-04)33GPP TR 26.902 version 14.0.0 Release 14Contents Intellectual Property Rights
15、 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Abbreviations . 7g34 Document organization 7g35 Service scenarios and metrics . 8g35.1 Service scenarios 8g35.2 Performance metrics . 8g35.2.1 Average Peak Signal-to-Noise Ratio (APSNR) 9g35.2.2 PSNR of Average N
16、ormalized Square Difference (PANSD) . 9g35.2.3 Percentage of Degraded Video Duration (PDVD) 9g36 Test case definition and performance figures . 9g36.1 Preliminary remarks . 9g36.2 Definitions 10g36.2.1 Video test sequences . 10g36.2.2 Encoding parameters. 10g36.2.3 Transport parameters 10g36.3 Servi
17、ce scenario A (PSC/MTSI-like service) . 10g36.3.1 Encoding anchors 10g36.3.2 Test cases 11g36.3.4 Performance figures 13g37 Performance figure generation . 14g37.1 Performance figure generation for service scenario A . 14g37.1.1 Overview 14g37.1.2 Encoding anchors 15g37.1.3 3GPP transport simulator
18、15g37.1.4 Decoding anchors . 16g37.1.5 Error-tolerant video decoder . 16g3Annex A: Performance assessment of a codec implementation . 18g3A.1 Decoder performance assessment 18g3A.2 Encoder performance assessment . 18g3Annex B: H.263 Codec description . 20g3B.1 Decoding process . 20g3B.2 Encoding pro
19、cess 20g3Annex C: H.264 Codec description . 21g3C.1 Decoding process . 21g3C.2 Encoding process 21g3Annex D: 3GPP file format extension for raw video . 22g3Annex E: RTPDUMP file format . 25g3Annex F: Simulator and bearer details 26g3ETSI ETSI TR 126 902 V14.0.0 (2017-04)43GPP TR 26.902 version 14.0.
20、0 Release 14F.1 Simulator package 26g3F.2 Simulator description . 26g3F.3 Error masks 28g3Annex G: Quality evaluation tool . 29g3Annex H: Video test sequences 30g3Annex I: Encoder-decoder performance verification 31g3Annex J: Change history 32g3History 33g3ETSI ETSI TR 126 902 V14.0.0 (2017-04)53GPP
21、 TR 26.902 version 14.0.0 Release 14Foreword This Technical Report has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of
22、 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 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
23、under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TR 126 902 V14.0.0 (2017-04)63GPP TR 26.902 ver
24、sion 14.0.0 Release 141 Scope The present document comprises a technical report on Video Codec Performance, for packet-switched video-capable multimedia services standardized by 3GPP. 2 References The following documents contain provisions which, through reference in this text, constitute provisions
25、 of the present document. References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. In the case of a reference to a 3
26、GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 IETF RFC 2429: “RTP Payload Format for the 1998 Version of ITU-T Rec. H.263 Video (H.263+)“. 2 IETF RFC 3550: “RTP: A Transport Pr
27、otocol for Real-Time Applications“, Schulzrinne H. et al, July 2003. 3 ITU-T Recommendation H.263 (1998): “Video coding for low bit rate communication“. 4 3GPP TS 26.110: “Codec for Circuit Switched Multimedia Telephony Service; General Description“. 5 3GPP TS 26.111: “Codec for Circuit Switched Mul
28、timedia Telephony Service; Modifications to H.324“. 6 ITU-T Recommendation H.263 - Annex X (2004): “Annex X: Profiles and levels definition“. 7 ITU-T Recommendation H.264 (2003): “Advanced video coding for generic audiovisual services“ | ISO/IEC 14496-10:2003: “Information technology - Coding of aud
29、io-visual objects - Part 10: Advanced Video Coding“. 8 ISO/IEC 14496-10/FDAM1: “AVC Fidelity Range Extensions“. 9 IETF RFC 3984: “RTP payload Format for H.264 Video“. 10 3GPP TS 26.141: “IP Multimedia System (IMS) Messaging and Presence; Media formats and codecs“. 11 3GPP TS 26.234: “Transparent end
30、-to-end Packet-switched Streaming Service (PSS); Protocols and codecs“. 12 3GPP TS 26.346: “Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs“. 13 3GPP TS 26.235: “Packet switched conversational multimedia applications; Default codecs“. 14 3GPP TS 26.236: “Packet switched conversat
31、ional multimedia applications; Transport protocols“. 15 3GPP TS 26.114: “IP Multimedia Subsystem (IMS); Multimedia telephony; Media handling and interaction“. 16 3GPP TR 26.936: “Performance characterization of 3GPP audio codecs“. 17 3GPP TR 25.101: “User Equipment (UE) radio transmission and recept
32、ion (FDD)“. ETSI ETSI TR 126 902 V14.0.0 (2017-04)73GPP TR 26.902 version 14.0.0 Release 143 Abbreviations For the purposes of the present document, the following abbreviations apply: APSNR Average PSNR AVC Advanced Video Codec DCCH Dedicated Control CHannel DPDCH Dedicated Physical Data CHannel DTC
33、H Dedicated Traffic CHannel HSPA High-Speed Packet Access IETF Internet Engineering Task Force IMS Internet protocol Multimedia Subsystem IP Internet Protocol MAC Medium Access Control MBMS Multimedia Broadcast/Multicast Service MSE Mean Square Error MTSI Multimedia Telephony over IMS NAL Network Ab
34、straction Layer NSD Normalized Square Difference PANSD PSNR of Average Normalized Square Difference PDU Protocol Data Unit PDVD Percentage of Degraded Video Duration PSC Packet-Switched Conversational PSNR Peak Signal-to-Noise Ratio PSS Packet-switched Streaming Service RFC IETF Request For Comments
35、 RLC Radio Link Control RTCP RTP Control Protocol RTP Real-time Transport Protocol SDP Session Description Protocol TTI Transmission Time Interval UDP User Datagram Protocol UE User Equipment UTRAN UMTS Terrestrial Radio Access Network 4 Document organization The present document is organized as dis
36、cussed below. Clause 5 introduces the service scenarios, including their relationship with 3GPP services. Furthermore, it discusses the performance measurement metrics used in the present document. Clause 6 (performance figures) defines representative test cases and contains a listing, in the form o
37、f tables, performance of video codecs for each of the test cases. Clause 7 (supplementary information on figure generation) contains pointers to accompanying files containing video sequences, anchor bit streams, and error prone test bit streams. It also describes the mechanisms used to generate the
38、anchor compressed video data, compressed video data exposed to typical error masks, and descriptions on the creation of error masks. Annex A sketches one possible environment that could be used by interested parties as a starting point for defining a process to assess the performances of a particula
39、r video codec against the performance figures. Annex B introduces details on the H.263 encoder and decoder configurations. Annex C introduces details of the H.264 encoder and decoder configurations Annex D introduces details on the usage of 3G file format in the present document. Annex E introduces
40、details on the usage of RTPdump format in the present document. ETSI ETSI TR 126 902 V14.0.0 (2017-04)83GPP TR 26.902 version 14.0.0 Release 14 Annex F introduces details on the simulator, bearers, and dump files. Annex G introduces the details on the Quality Metric Evaluation. Annex H introduces th
41、e details on the Video Test Sequences. Annex I provides information on verification of appropriate use of the tools provided in this document. 5 Service scenarios and metrics Video transmission in a 3GPP packet-switched environment conceptually consists of an Encoder, one or more Channels, and a Dec
42、oder. The Encoder, as defined here, comprises the steps of the source coding and, when required by the service, the packetization into RTP packets, according to the relevant 3GPP Technical Specification for the service and media codec in question. The Channel, as defined here comprises all steps of
43、conveying the information created by the Encoder to the Decoder. Note that the Channel, in some environments, may be prone to packet erasures, and in others it may be error free. In an erasure prone environment, it is not guarantied that all information created by the Encoder can be processed by the
44、 Decoder; implying that the Decoder needs to cope to some extent with compressed video data not compliant with the video codec standard. The Decoder, finally, de-packetizes and reconstructs the - potentially erasure prone and perhaps non-compliant - packet stream to a reconstructed video sequence. T
45、he only type of error considered at the depacketizer/decoder is RTP packet erasures. 5.1 Service scenarios 3GPP includes video in different services, e.g. PSS 11, MBMS 12, PSC 13, 14, and MTSI 15. This report lists the performance figures only one service scenario focusing on an RTP-based conversati
46、onal service such as PSC or MTSI. Service scenario A (PSC/MTSI-like) relates to conversational services involving compressed video data (an erasure prone transport, low latency requirements, application layer transport quality feedback, etc.). In this scenario, UE-based video encoding and decoding a
47、re assumed. The foremost examples for this service scenario are PSC or MTSI. Within the this service scenario, the performance of an encoder and a decoder is of importance for the service quality. Service scenario A refers to the performance of a decoder to consume a possibly non-compliant (due to t
48、ransmission errors) compressed video data generated by an encoder that fulfils the provision of sufficient quality in this scenario. 5.2 Performance metrics This clause defines performance metrics as used in section 6, to numerically and objectively express a Decoders reaction to compressed video da
49、ta that is possibly modified due to erasures. Only objective metrics are considered which can be computed from sequences being available in a 3G format as described in Annex D by using the method detailed in annex G. The following section provides a general description of the quality metrics. For the exact computation with the availability of sequences in 3G format please refer to annex G. The following acronyms are utilized throughout the remainder of this subclause: OrigSeq: The original video seq
