1、 ETSI TR 126 902 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Video codec performance (3GPP TR 26.902 version 15.0.0 Release 15) TECHNICAL REPORT ETSI ETSI TR 126 902 V15.0.0 (2018-07)13GPP TR 26.902 version 15
2、.0.0 Release 15Reference RTR/TSGS-0426902vf00 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) N 7803
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9、18-07)23GPP TR 26.902 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
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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 Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document
14、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:/webapp.ets
15、i.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 clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not
16、“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 126 902 V15.0.0 (2018-07)33GPP TR 26.902 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Abbreviations . 6g34
17、 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) 8g35.2.2 PSNR of Average Normalized Square Difference (PANSD) . 9g35.2.3 Percentage of Degraded Video Duration (PDVD) 9g36 Test case d
18、efinition and performance figures . 9g36.1 Preliminary remarks . 9g36.2 Definitions 9g36.2.1 Video test sequences . 9g36.2.2 Encoding parameters. 10g36.2.3 Transport parameters 10g36.3 Service scenario A (PSC/MTSI-like service) . 10g36.3.1 Encoding anchors 10g36.3.2 Test cases 11g36.3.4 Performance
19、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 15g37.1.4 Decoding anchors . 16g37.1.5 Error-tolerant video decoder . 16g3Annex A: Performance assessment of a
20、 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 process 20g3Annex C: H.264 Codec description . 21g3C.1 Decoding process . 21g3C.2 Encoding process 21g3Annex D: 3
21、GPP file format extension for raw video . 22g3Annex E: RTPDUMP file format . 25g3Annex F: Simulator and bearer details 26g3ETSI ETSI TR 126 902 V15.0.0 (2018-07)43GPP TR 26.902 version 15.0.0 Release 15F.1 Simulator package 26g3F.2 Simulator description . 26g3F.3 Error masks 28g3Annex G: Quality eva
22、luation tool . 29g3Annex H: Video test sequences 30g3Annex I: Encoder-decoder performance verification 31g3Annex J: Change history 32g3History 33g3ETSI ETSI TR 126 902 V15.0.0 (2018-07)53GPP TR 26.902 version 15.0.0 Release 15Foreword This Technical Report has been produced by the 3rdGeneration Part
23、nership 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 the present document, it will be re-released by the TSG with an identifying change of release date and an inc
24、rease 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 under change control. y the second digit is incremented for all changes of substance, i.e. technical enhanceme
25、nts, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TR 126 902 V15.0.0 (2018-07)63GPP TR 26.902 version 15.0.0 Release 151 Scope The present document comprises a technical report on Video Codec Performance, fo
26、r packet-switched video-capable multimedia services standardized by 3GPP. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by date of publication, edition number,
27、 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 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest versio
28、n 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 Protocol for Real-Time Applications“, Schulzrinne H. et al, July 2003. 3 ITU-T Recommendation H.263 (1998)
29、: “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 Multimedia Telephony Service; Modifications to H.324“. 6 ITU-T Recommendation H.263 - Annex X (2004): “Anne
30、x 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 audio-visual objects - Part 10: Advanced Video Coding“. 8 ISO/IEC 14496-10/FDAM1: “AVC Fidelity Range Exten
31、sions“. 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-to-end Packet-switched Streaming Service (PSS); Protocols and codecs“. 12 3GPP TS 26.346: “Multimedia B
32、roadcast/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 conversational multimedia applications; Transport protocols“. 15 3GPP TS 26.114: “IP Multimedia Subsystem (IMS);
33、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 reception (FDD)“. 3 Abbreviations For the purposes of the present document, the following abbreviations apply:
34、 ETSI ETSI TR 126 902 V15.0.0 (2018-07)73GPP TR 26.902 version 15.0.0 Release 15APSNR Average PSNR AVC Advanced Video Codec DCCH Dedicated Control CHannel DPDCH Dedicated Physical Data CHannel DTCH Dedicated Traffic CHannel HSPA High-Speed Packet Access IETF Internet Engineering Task Force IMS Inter
35、net 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 Abstraction Layer NSD Normalized Square Difference PANSD PSNR of Average Normalized Square Difference PDU
36、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 RLC Radio Link Control RTCP RTP Control Protocol RTP Real-time Transport Protocol SDP Session Descripti
37、on 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 discussed below. - Clause 5 introduces the service scenarios, including their relationship with 3GPP servic
38、es. 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 of tables, performance of video codecs for each of the test cases. - Clause 7 (supplementary informat
39、ion 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 anchor compressed video data, compressed video data exposed to typical error masks, and descriptio
40、ns 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 particular video codec against the performance figures. - Annex B introduces details on the H.263 encoder
41、 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 details on the usage of RTPdump format in the present document. - Annex F introduces det
42、ails on the simulator, bearers, and dump files. - Annex G introduces the details on the Quality Metric Evaluation. - Annex H introduces the details on the Video Test Sequences. ETSI ETSI TR 126 902 V15.0.0 (2018-07)83GPP TR 26.902 version 15.0.0 Release 15- Annex I provides information on verificati
43、on 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 Decoder. The Encoder, as defined here, comprises the steps of the source coding and,
44、 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 conveying the information created by the Encoder to the Decoder. Note that the Ch
45、annel, 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 Decoder; implying that the Decoder needs to cope to some extent with compressed
46、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. The only type of error considered at the depacketizer/decoder is RTP packet erasur
47、es. 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 conversational service such as PSC or MTSI. - Service scenario A (PSC/MTSI-like) relates to
48、 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 are assumed. The foremost examples for this service scenario are PSC or MTSI. Wi
49、thin 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 transmission 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 data that is possi
