{"id":6455,"number":"26.249","type":"TS","title":"Immersive Audio for Split Rendering Scenarios; Detailed Algorithmic Description of Split Rendering Functions","series":26,"status":"Under change control","initial_release":"Rel-18","primary_group":"S4","secondary_groups":[],"portal_id":4278,"portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=4278","dynareport_url":"https://www.3gpp.org/dynareport/26249.htm","publication_scope":null,"radio_technologies":[],"first_seen_at":"2026-09-16T11:04:53.932120+00:00","updated_at":"2026-10-16T09:34:55.609033+00:00","raw_metadata":{"source_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=4278","bibliography_source":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv"},"detail_synced_at":"2026-10-08T00:19:44.786272+00:00","versions":[{"release":"Rel-19","version":"19.0.0","meeting":"SA#109","upload_date":"2025-10-31","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.249/26249-j00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-18","version":"18.0.0","meeting":"SA#104","upload_date":"2024-07-04","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.249/26249-i00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-18","version":"0.3.0","meeting":"SA4#128","upload_date":"2024-07-04","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.249/26249-030.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"0.2.0","meeting":"SA#104","upload_date":"2024-07-04","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.249/26249-020.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"1.0.0","meeting":"SA#104","upload_date":"2024-06-10","comment":"","official_file_url":"https://ftp.3gpp.org//Specs/archive/26_series/26.249/26249-100.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"0.1.1","meeting":"SA4#128","upload_date":"2024-05-14","comment":"","official_file_url":"https://ftp.3gpp.org//Specs/archive/26_series/26.249/26249-011.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"0.1.0","meeting":"SA4#127-bis-e","upload_date":"2024-04-11","comment":"","official_file_url":"https://ftp.3gpp.org//Specs/archive/26_series/26.249/26249-010.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"0.0.1","meeting":"SA4#127-bis-e","upload_date":"2024-04-03","comment":"","official_file_url":"https://ftp.3gpp.org//Specs/archive/26_series/26.249/26249-001.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"}],"release_presence":[{"release":"Rel-18","first_version_date":"2024-04-03","latest_version_date":"2024-07-04","first_version":"0.0.1","latest_version":"18.0.0","version_count":7},{"release":"Rel-19","first_version_date":"2025-10-31","latest_version_date":"2025-10-31","first_version":"19.0.0","latest_version":"19.0.0","version_count":1}],"classifications":[],"work_items":[{"uid":990025,"acronym":"ISAR","effective_acronym":"ISAR","title":"Immersive Audio for Split Rendering Scenarios","responsible_groups":["S4"],"release":"Rel-18","status":"PCG approved","wi_level":"Feature (1st level)","type":"Work Item","first_release":"Rel-18","last_release":"Rel-19","provenance_type":"official","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20261012.zip","association_sources":["crdb"],"association_status":"source_tracked"}],"change_requests":[{"portal_cr_id":null,"cr_number":"0002","revision":null,"category":"A","impacted_version":"19.0.0","target_release":"Rel-19","title":"Bug fixes related to availability of TS 26.251 (IVAS fixed-point code)","wg_tdoc":"S4-251619","wg_status":"noted","tsg_tdoc":null,"tsg_status":null,"new_version":"..","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0001","revision":null,"category":"F","impacted_version":"18.0.0","target_release":"Rel-18","title":"Bug fixes related to availability of TS 26.251 (IVAS fixed-point code)","wg_tdoc":"S4-251614","wg_status":"noted","tsg_tdoc":null,"tsg_status":null,"new_version":"..","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null}],"relationships":[],"relationship_release_evidence_summary":[],"relationship_release_evidence":[],"relationship_release_evidence_meta":{"total":0,"returned_count":0,"limit":100,"truncated":false,"href":"/api/specs/26.249/relationship-evidence"}}