{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:J6T7QBMC22UMEBHQQUXLGRGHTF","short_pith_number":"pith:J6T7QBMC","canonical_record":{"source":{"id":"2309.07376","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-09-14T01:39:40Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"c87c8d40e28e6d05d051b8bb9aac8f5022fe0a1494befb88fac1039935e7aebb","abstract_canon_sha256":"75e8e20b907100498c03f1250811ad18d15fbdb49b8cbe5db1a1136ec2fdcb42"},"schema_version":"1.0"},"canonical_sha256":"4fa7f80582d6a8c204f0852eb344c7995c63d58f6a79953fa177eb0931f7f1dd","source":{"kind":"arxiv","id":"2309.07376","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.07376","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"arxiv_version","alias_value":"2309.07376v2","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.07376","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"pith_short_12","alias_value":"J6T7QBMC22UM","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"pith_short_16","alias_value":"J6T7QBMC22UMEBHQ","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"pith_short_8","alias_value":"J6T7QBMC","created_at":"2026-07-05T07:12:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:J6T7QBMC22UMEBHQQUXLGRGHTF","target":"record","payload":{"canonical_record":{"source":{"id":"2309.07376","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-09-14T01:39:40Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"c87c8d40e28e6d05d051b8bb9aac8f5022fe0a1494befb88fac1039935e7aebb","abstract_canon_sha256":"75e8e20b907100498c03f1250811ad18d15fbdb49b8cbe5db1a1136ec2fdcb42"},"schema_version":"1.0"},"canonical_sha256":"4fa7f80582d6a8c204f0852eb344c7995c63d58f6a79953fa177eb0931f7f1dd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:12:18.510012Z","signature_b64":"dg/EkiD0W0OHAor6t1aD2amwD/tUwZakW4/zgn0a9pOyyElYDXbj7fEOpiSMTLOxXRPl0n2BZ3Zb4o9slh6UAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4fa7f80582d6a8c204f0852eb344c7995c63d58f6a79953fa177eb0931f7f1dd","last_reissued_at":"2026-07-05T07:12:18.509500Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:12:18.509500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.07376","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:12:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1+I8hnMDvsfn3kJyeRmY4U6ounCKTTRR6vP8dgSSUWVDUxTX2/NmixLkv79SBisepmj7UjRw4s2X49zX6NieDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T14:39:05.922445Z"},"content_sha256":"8d8fd54948fded96fb105ef7499bc0e370677607f9b5ae9dc6ad95231cc49444","schema_version":"1.0","event_id":"sha256:8d8fd54948fded96fb105ef7499bc0e370677607f9b5ae9dc6ad95231cc49444"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:J6T7QBMC22UMEBHQQUXLGRGHTF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VCD: A Video Conferencing Dataset for Video Compression","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.MM"],"primary_cat":"eess.IV","authors_text":"Albert Sadovnikov, Babak Naderi, Henrik Turbell, Nabakumar Singh Khongbantabam, Quan Zhou, Ross Cutler, Yasaman Hosseinkashi","submitted_at":"2023-09-14T01:39:40Z","abstract_excerpt":"Commonly used datasets for evaluating video codecs are all very high quality and not representative of video typically used in video conferencing scenarios. We present the Video Conferencing Dataset (VCD) for evaluating video codecs for real-time communication, the first such dataset focused on video conferencing. VCD includes a wide variety of camera qualities and spatial and temporal information. It includes both desktop and mobile scenarios and two types of video background processing. We report the compression efficiency of H.264, H.265, H.266, and AV1 in low-delay settings on VCD and comp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.07376","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2309.07376/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:12:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"crjJioNclDLG9q7o68BGTuIEiZbNYmUkIjELXtB/n5S0GPiEcKS4HOcTo0kbuqRIiNfOnLJYaZrYFzKidqEZDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T14:39:05.922833Z"},"content_sha256":"2af797d953b5feb36d1681f234263092216b0d392562ab95ffe9e78c8e120bf3","schema_version":"1.0","event_id":"sha256:2af797d953b5feb36d1681f234263092216b0d392562ab95ffe9e78c8e120bf3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J6T7QBMC22UMEBHQQUXLGRGHTF/bundle.json","state_url":"https://pith.science/pith/J6T7QBMC22UMEBHQQUXLGRGHTF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J6T7QBMC22UMEBHQQUXLGRGHTF/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-05T14:39:05Z","links":{"resolver":"https://pith.science/pith/J6T7QBMC22UMEBHQQUXLGRGHTF","bundle":"https://pith.science/pith/J6T7QBMC22UMEBHQQUXLGRGHTF/bundle.json","state":"https://pith.science/pith/J6T7QBMC22UMEBHQQUXLGRGHTF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J6T7QBMC22UMEBHQQUXLGRGHTF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:J6T7QBMC22UMEBHQQUXLGRGHTF","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"75e8e20b907100498c03f1250811ad18d15fbdb49b8cbe5db1a1136ec2fdcb42","cross_cats_sorted":["cs.MM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-09-14T01:39:40Z","title_canon_sha256":"c87c8d40e28e6d05d051b8bb9aac8f5022fe0a1494befb88fac1039935e7aebb"},"schema_version":"1.0","source":{"id":"2309.07376","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.07376","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"arxiv_version","alias_value":"2309.07376v2","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.07376","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"pith_short_12","alias_value":"J6T7QBMC22UM","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"pith_short_16","alias_value":"J6T7QBMC22UMEBHQ","created_at":"2026-07-05T07:12:18Z"},{"alias_kind":"pith_short_8","alias_value":"J6T7QBMC","created_at":"2026-07-05T07:12:18Z"}],"graph_snapshots":[{"event_id":"sha256:2af797d953b5feb36d1681f234263092216b0d392562ab95ffe9e78c8e120bf3","target":"graph","created_at":"2026-07-05T07:12:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2309.07376/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Commonly used datasets for evaluating video codecs are all very high quality and not representative of video typically used in video conferencing scenarios. We present the Video Conferencing Dataset (VCD) for evaluating video codecs for real-time communication, the first such dataset focused on video conferencing. VCD includes a wide variety of camera qualities and spatial and temporal information. It includes both desktop and mobile scenarios and two types of video background processing. We report the compression efficiency of H.264, H.265, H.266, and AV1 in low-delay settings on VCD and comp","authors_text":"Albert Sadovnikov, Babak Naderi, Henrik Turbell, Nabakumar Singh Khongbantabam, Quan Zhou, Ross Cutler, Yasaman Hosseinkashi","cross_cats":["cs.MM"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-09-14T01:39:40Z","title":"VCD: A Video Conferencing Dataset for Video Compression"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.07376","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:8d8fd54948fded96fb105ef7499bc0e370677607f9b5ae9dc6ad95231cc49444","target":"record","created_at":"2026-07-05T07:12:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"75e8e20b907100498c03f1250811ad18d15fbdb49b8cbe5db1a1136ec2fdcb42","cross_cats_sorted":["cs.MM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-09-14T01:39:40Z","title_canon_sha256":"c87c8d40e28e6d05d051b8bb9aac8f5022fe0a1494befb88fac1039935e7aebb"},"schema_version":"1.0","source":{"id":"2309.07376","kind":"arxiv","version":2}},"canonical_sha256":"4fa7f80582d6a8c204f0852eb344c7995c63d58f6a79953fa177eb0931f7f1dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4fa7f80582d6a8c204f0852eb344c7995c63d58f6a79953fa177eb0931f7f1dd","first_computed_at":"2026-07-05T07:12:18.509500Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:12:18.509500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dg/EkiD0W0OHAor6t1aD2amwD/tUwZakW4/zgn0a9pOyyElYDXbj7fEOpiSMTLOxXRPl0n2BZ3Zb4o9slh6UAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:12:18.510012Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.07376","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d8fd54948fded96fb105ef7499bc0e370677607f9b5ae9dc6ad95231cc49444","sha256:2af797d953b5feb36d1681f234263092216b0d392562ab95ffe9e78c8e120bf3"],"state_sha256":"e1dabc1fa34264a6dc48bbe002051bcfd7ca02ebd268162e473df074fb076982"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ETs3ZCnhe2B9Cw3fyte+O4TMX7dtRozrL1I/CT6/oN1LTTvAmjemWEFqTzsRgMtopkLPPXMgdfnwajMEzzScAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T14:39:05.925475Z","bundle_sha256":"dc2e18d4262a42cf989515e931740b4d9aac580730db8b7adac062fc679f81a0"}}