{"id":6609,"number":"26.957","type":"TR","title":"Study on Server And Network-assisted Dynamic Adaptive Streaming over HTTP (DASH) (SAND) for 3GPP multimedia services","series":26,"status":"Under change control","initial_release":"Rel-14","primary_group":"S4","secondary_groups":[],"portal_id":3052,"portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3052","dynareport_url":"https://www.3gpp.org/dynareport/26957.htm","publication_scope":null,"radio_technologies":[],"first_seen_at":"2026-09-16T11:04:54.511187+00:00","updated_at":"2026-10-16T09:35:06.458750+00:00","raw_metadata":{"source_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3052","bibliography_source":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv"},"detail_synced_at":"2026-10-08T00:33:45.579705+00:00","versions":[{"release":"Rel-19","version":"19.0.0","meeting":"SA#109","upload_date":"2025-10-24","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-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#103","upload_date":"2024-05-15","comment":"Automatic upgrade from previo...","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-i00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-17","version":"17.0.0","meeting":"SA#95-e","upload_date":"2022-04-07","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-h00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-16","version":"16.0.0","meeting":"SA#88-e","upload_date":"2020-07-21","comment":"","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.957/26957-g00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-15","version":"15.0.0","meeting":"SA#80","upload_date":"2018-06-22","comment":"","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.957/26957-f00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-14","version":"14.1.0","meeting":"SA#75","upload_date":"2017-03-17","comment":"","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.957/26957-e10.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":51626,"version_status":null},{"release":"Rel-14","version":"14.0.0","meeting":"SA#74","upload_date":"2016-12-16","comment":"","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.957/26957-e00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-14","version":"2.0.0","meeting":"SA#74","upload_date":"2016-11-17","comment":"SP-160775","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.957/26957-200.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"1.1.1","meeting":"SA4#91","upload_date":"2016-11-08","comment":"Second version marked 1.1.0","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.957/26957-111.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"1.1.0","meeting":"SA4#91","upload_date":"2016-11-08","comment":"First version marked 1.1.0","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.957/26957-110.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"1.1.2","meeting":"SA4#91","upload_date":"2016-11-03","comment":"Third version marked 1.1.0","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.957/26957-110.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"0.6.0","meeting":"SA4#90","upload_date":"2016-09-16","comment":"S4-160944","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-060.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"1.0.0","meeting":"SA#73","upload_date":"2016-09-15","comment":"SP-160603","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-100.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"0.7.0","meeting":"SA4#90","upload_date":"2016-09-15","comment":"s4-161053","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-070.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"0.3.0","meeting":"SA4#89","upload_date":"2016-07-09","comment":"S4-160815","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-030.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"0.2.0","meeting":"SA4#89","upload_date":"2016-06-27","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-020.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"0.1.0","meeting":"SA4#88","upload_date":"2016-04-26","comment":"S4-160484","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-010.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"0.0.1","meeting":"SA4#88","upload_date":"2016-04-25","comment":"S4-160349","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.957/26957-001.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-14","version":"1.0.1","meeting":"SA4#91","upload_date":null,"comment":"Version not created.","official_file_url":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"}],"release_presence":[{"release":"Rel-14","first_version_date":"2016-04-25","latest_version_date":"2017-03-17","first_version":"0.0.1","latest_version":"14.1.0","version_count":14},{"release":"Rel-15","first_version_date":"2018-06-22","latest_version_date":"2018-06-22","first_version":"15.0.0","latest_version":"15.0.0","version_count":1},{"release":"Rel-16","first_version_date":"2020-07-21","latest_version_date":"2020-07-21","first_version":"16.0.0","latest_version":"16.0.0","version_count":1},{"release":"Rel-17","first_version_date":"2022-04-07","latest_version_date":"2022-04-07","first_version":"17.0.0","latest_version":"17.0.0","version_count":1},{"release":"Rel-18","first_version_date":"2024-05-15","latest_version_date":"2024-05-15","first_version":"18.0.0","latest_version":"18.0.0","version_count":1},{"release":"Rel-19","first_version_date":"2025-10-24","latest_version_date":"2025-10-24","first_version":"19.0.0","latest_version":"19.0.0","version_count":1}],"classifications":[],"work_items":[{"uid":710013,"acronym":"FS_SAND","effective_acronym":"FS_SAND","title":"Study on Server and Network Assisted DASH for 3GPP","responsible_groups":["S4"],"release":"Rel-14","status":"PCG approved","wi_level":"Feature (1st level)","type":"Work Item","first_release":"Rel-14","last_release":"Rel-14","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":"0001","revision":null,"category":"F","impacted_version":"14.0.0","target_release":"Rel-14","title":"Corrections to SAND TR","wg_tdoc":"S4-170005","wg_status":"revised","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":"1","category":"F","impacted_version":"14.0.0","target_release":"Rel-14","title":"Corrections to SAND TR","wg_tdoc":"S4-170153","wg_status":"agreed","tsg_tdoc":"SP-170035","tsg_status":"approved","new_version":"14.1.0","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/26.957/relationship-evidence"}}