Search Results for "JVET-AM0195"
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Abstract
This informational proposal provides the results and analysis of Gradual Decoding Refresh technology under ultra-low latency (ULL) test scenario investigated by AhG18. The BD-PSNR results demonstrate a performance of this technique under ULL test conditions: 1.63 dB increase on average for classes A & B at same latency restrictions. Freezing time is decreased by 10% on average for classes A & B. As a supplementary result by request during AhG18 discussions the GDR combined with Scalable (SGDR) solution was evaluated demonstrating synergy effect of efficiency. SGDR further improves the quality under ULL scenario up to 4.44 dB of average performance increase in respect to single layer VTM and freezing time was decreased by 26%. Demo videos solution are provided in the same conditions.
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JVET-AM0195 AhG18: Gradual Decoding Refresh (GDR) under ultra low latency test scenario [M. Sychev, A. Dzugaev, S. Ikonin, E. Alshina (Huawei)]
This informational proposal provides the results and analysis of Gradual Decoding Refresh technology under ultra-low latency (ULL) test scenario investigated by AhG18. The BD-PSNR results demonstrate a performance of this technique under ULL test conditions: 1.63 dB increase on average for classes A & B at same latency restrictions. Freezing time is decreased by 10% on average for classes A & B. As a supplementary result by request during AhG18 discussions the GDR combined with Scalable (SGDR) solution was evaluated demonstrating synergy effect of efficiency. SGDR further improves the quality under ULL scenario up to 4.44 dB of average performance increase in respect to single layer VTM and freezing time was decreased by 26%. Demo videos solution are provided in the same conditions.
Decision(SW/BF): Include bug fix in GDR encoder to AHG branch (not relevant for main VTM branch).
Cited:
Decisions
Decision(SW/BF): Include bug fix in GDR encoder to AHG branch (not relevant for main VTM branch).
Citation
Abstract
This contribution is a crosscheck report of JVET-AM0195 which introduced a software bug fix to allow correct reconstruction during GDR period.
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JVET-AN0339 Crosscheck of JVET-AM0195 (AHG18: Gradual Decoding Refresh under ultra-low latency test scenario) [E. Mora (VITEC)] [late]
Results are confirmed. It was commented that in cases of affine, GPM and SbTMVP candidates some more improvements might be desirable.
Decision (SW): Merge software from JVET-AM0195 to AHG18 branch.
References:
Decisions
merged
Decision (SW): Merge software from JVET-AM0195 to AHG18 branch.
Citation
Abstract
This document provides a cross check report.
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JVET-AN0082 AhG18: Crosscheck report for JVET-AM0195 [V. Zakharchenko (Nokia)]
Cross-check related to a contribution of last meeting – it was confirmed that no issue was found in terms of results reported. The bug fix on GDR (non-normative) is asserted appropriate.
References:
Decisions
Cross-check related to a contribution of last meeting – it was confirmed that no issue was found in terms of results reported. The bug fix on GDR (non-normative) is asserted appropriate.
Citation
Abstract
This document summarizes the activities of AHG18 on ultra-low latency and packet loss resilience between the 40th and 41st JVET meetings.
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JVET-AO0018 JVET AHG report: Ultra-low latency and packet loss resilience (AHG18) [S. Deshpande, S. Ikonin, V. Zakharchenko (co-chairs), S. Fößel, C. Kim, X. Ma, S. Puri, J. Ström, S. Wenger (vice-chairs)]
Activities
The regular JVET e-mail reflector was used for discussions (jvet@lists.rwth-aachen.de). Few organizational e-mails were sent to reflector.
Teleconference
The teleconference was held on December 17th with 31 participants attending.
The following topics were discussed:
ULL CTC software and excel template introduction according to JVET-AN2039 ULL CTC, JVET-AO0047
ULL CfE response software introduction, JVET-AO0048
CfP discussion
The meeting minutes are available in the document JVET-AO0049.
Simulation software
Adoption of last JVET meeting (JVET-AM0195, GDR fixes) has been merged to ‘ull-master’ branch: https://vcgit.hhi.fraunhofer.de/jvet-ahg-ull/VVCSoftware_VTM/-/tree/ull-mas...
Decisions
The AHG recommended to:
Review all input contributions.
Discuss test conditions and evaluation methodology, including CfP related suggestions.
Collect test cases and specific requirements.
Continue development of simulation software.
Continue the study of ultra-low latency and packet loss resilience technologies in JVET.
Citation
Abstract not available in document
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JVET-AN2041 Preliminary Announcement of JVET AHG17 Meeting in Aachen, DE, during 23-27 February 2026
The following 6 documents were produced as WG 5 documents only, without a corresponding JVET output document or direct repetition of their content in this meeting report:
WG 5 N 373 Disposition of comments received on ISO/IEC 23002-7:2024/DAM 1
WG 5 N 374 Text of FDIS ISO/IEC 23002-7:202x (4th ed.) Versatile supplemental enhancement information messages for coded video bitstreams
WG 5 N 375 Disposition of comments received on ISO/IEC 23008-2:2025/DAM 1
WG 5 N 376 Text of FDIS ISO/IEC 23008-2:202x (7th ed.) High efficiency video coding
WG 5 N 377 Disposition of comments received on ISO/IEC 23090-3:2024/DAM 1
WG 5 N 378 Text of FDIS ISO/IEC 23090-3:202x (4th ed.) Versatile video coding
For the organization and planning of its future work, the JVET established 19 “ad hoc groups” (AHGs) to pr...
Decisions
a) JVET documents
The meeting was closed at 1445 CET on 2025-10-12.
Citation
Abstract
This document summarizes the activities of AHG18 on ultra-low latency and packet loss resilience between the 39th meeting (Daejeon, KR, 26 June - 04 July 2025) and 40th meeting (Geneva, CH, 03 - 12 October 2025).
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JVET-AN0018 JVET AHG report: Ultra-low latency and packet loss resilience (AHG18) [S. Ikonin, S. Wenger, V. Zakharchenko (co-chairs), S. Deshpande, S. Fößel, C. Kim, X. Ma, S. Puri, J. Ström (vice-chairs)]
Activities
The regular JVET e-mail reflector was used for discussions (jvet@lists.rwth-aachen.de). Few organizational e-mails were sent to reflector.
Teleconference
The teleconference was held on August 21st with 27 participants attending.
The following topics were discussed:
JVET-AN0046: On test conditions for ultra-low latency and packet loss resilience with full QP range
Network bandwidth point selection automation script
LDP/LDB simulations in full QP range
Spatial Scalability
AHG18 software, MRs status
MR2: Full VTM
MR3: GDR fix
JVET-AN0045: Codec software for ultra-low latency and packet loss resilience (related to JVET-AM0218)
Software overview
Transmission priority model
The me...
Decisions
Project development (48)
Citation
Abstract not available in document
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JVET-AM0181 AHG9: Proposed new SEI message on localization and mapping [G. Teniou, S. Wenger, A. Hinds, J. Ricard (Tencent), Louis Kerofsky, Yong He, Shuai Zhao (Qualcomm)]
This document proposes a new SEI message designed to support the 3d model creation from 2d video streams. The proposed SEI message conveys essential metadata such as camera intrinsic (focal length, principal point, …) parameters and camera extrinsic (position and orientation) parameters. This metadata is crucial for algorithms that create 3D models such as 3d Gaussian Splatting (3DGS) and to assist the rendering process.
The radial distortion aspect of this SEI message is a subset of what is provided in the Lens optical correction (LOC) SEI.
It was questioned why 3dmr_camera_id is included in the intrinsic parameters.
The focal length is expressed in pixels, which should be for the capture resolution, which may not be...
Decisions
Add to the TuC
The meeting was closed at 1722 KST on 2025-07-04.
Citation
Abstract
This document summarizes the activities of AHG18 on ultra-low latency and packet loss resilience between the 38th meeting (Teleconference, 26 March – 04 April 2025) and 39th meeting (Daejeon, KR, 26 June – and 04 July 2025).
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JVET-AM0018 JVET AHG report: Ultra-low latency and packet loss resilience (AHG18) [S. Ikonin, S. Wenger, V. Zakharchenko (co-chairs), S. Deshpande, S. Fößel, C. Kim, X. Ma, S. Puri, J. Ström (vice-chairs)]
Simulation software
Adoptions of the last JVET meeting (JVET-AL0201) were merged to the ‘ull-master’ branch: https://vcgit.hhi.fraunhofer.de/jvet-ahg-ull/VVCSoftware_VTM/-/tree/ull-master.
Teleconferences
Two teleconferences were held on May 20th and June 11h, with 24 and 17 participants correspondingly.
The following topics were discussed:
GDR and Temporal scalability transmission simulations.
Comments and suggestions on ULL test conditions
Dry-run of visual tests discussion
Software modifications of JVET-AL0201 adopted last JVET meeting
The meeting minutes, presented materials and video demonstrations are available in JVET-AM0046 and JVET-AM0051.
Related contributions
A total of 16 c...
Decisions
Project development (34)
Citation