{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:EFBR5KVYMYSV5SZZTQWJBRHEP5","short_pith_number":"pith:EFBR5KVY","canonical_record":{"source":{"id":"2103.06675","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-03-11T14:10:29Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"d7ddb91e906b33d410c9a982bc1093ef53788161e25816a2ccc848477761a69b","abstract_canon_sha256":"f817a52055f5a1ec6d261e99cacd60bd4e2794e5f275dbe74f874765009304e5"},"schema_version":"1.0"},"canonical_sha256":"21431eaab866255ecb399c2c90c4e47f4123bdf9c5f816f2da5627cc473b3e62","source":{"kind":"arxiv","id":"2103.06675","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.06675","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"arxiv_version","alias_value":"2103.06675v2","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.06675","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"pith_short_12","alias_value":"EFBR5KVYMYSV","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"pith_short_16","alias_value":"EFBR5KVYMYSV5SZZ","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"pith_short_8","alias_value":"EFBR5KVY","created_at":"2026-07-05T02:36:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:EFBR5KVYMYSV5SZZTQWJBRHEP5","target":"record","payload":{"canonical_record":{"source":{"id":"2103.06675","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-03-11T14:10:29Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"d7ddb91e906b33d410c9a982bc1093ef53788161e25816a2ccc848477761a69b","abstract_canon_sha256":"f817a52055f5a1ec6d261e99cacd60bd4e2794e5f275dbe74f874765009304e5"},"schema_version":"1.0"},"canonical_sha256":"21431eaab866255ecb399c2c90c4e47f4123bdf9c5f816f2da5627cc473b3e62","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:36:10.244600Z","signature_b64":"eVAtdICla0+3fpBh9mRHwEaASCvBjflpTy3mp/IhbBlT9gSq6HbBBo0dPPFGhqfSzEDm7oOVniJ6p8N2IWJ3CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21431eaab866255ecb399c2c90c4e47f4123bdf9c5f816f2da5627cc473b3e62","last_reissued_at":"2026-07-05T02:36:10.244103Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:36:10.244103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.06675","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":"2026-07-05T02:36:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rsp8/OX4f9g/l3olbljCoNa0BzGovbApY410v4vLmQadaOipTfLVC+EleyeD4CI5QfxUswhNQeLwhHF16mE7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T13:53:08.038826Z"},"content_sha256":"13c250433e863b3b8b4313cf12637e349564944ffdb03e9ddda5739675d98fd0","schema_version":"1.0","event_id":"sha256:13c250433e863b3b8b4313cf12637e349564944ffdb03e9ddda5739675d98fd0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:EFBR5KVYMYSV5SZZTQWJBRHEP5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Open GOP Resolution Switching in HTTP Adaptive Streaming with VVC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.MM"],"primary_cat":"eess.IV","authors_text":"Adam Wieckowski, Benjamin Bross, Christian Bartnik, Cornelius Hellge, Robert Skupin, Thomas Schierl, Yago Sanchez","submitted_at":"2021-03-11T14:10:29Z","abstract_excerpt":"The user experience in adaptive HTTP streaming relies on offering bitrate ladders with suitable operation points for all users and typically involves multiple resolutions. While open GOP coding structures are generally known to provide substantial coding efficiency benefit, their use in HTTP streaming has been precluded through lacking support of reference picture resampling (RPR) in AVC and HEVC. The newly emerging Versatile Video Coding (VVC) standard supports RPR, but only conversational scenarios were primarily investigated during the design of VVC. This paper aims at enabling usage of RPR"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.06675","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/2103.06675/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":"2026-07-05T02:36:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YavCKgbw4e3rVQqgPyIhRNLVXZa+Sg6hq6E8oKfI73qwcW5DjVbrZ5p60WfSf4EmMCO/cPPkeMaD8Wxfr3o0Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T13:53:08.039362Z"},"content_sha256":"e76db35af2f089c90c7c92333a1d054755c112dc1b758491be5dfb58188c4c0f","schema_version":"1.0","event_id":"sha256:e76db35af2f089c90c7c92333a1d054755c112dc1b758491be5dfb58188c4c0f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EFBR5KVYMYSV5SZZTQWJBRHEP5/bundle.json","state_url":"https://pith.science/pith/EFBR5KVYMYSV5SZZTQWJBRHEP5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EFBR5KVYMYSV5SZZTQWJBRHEP5/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":"2026-08-23T13:53:08Z","links":{"resolver":"https://pith.science/pith/EFBR5KVYMYSV5SZZTQWJBRHEP5","bundle":"https://pith.science/pith/EFBR5KVYMYSV5SZZTQWJBRHEP5/bundle.json","state":"https://pith.science/pith/EFBR5KVYMYSV5SZZTQWJBRHEP5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EFBR5KVYMYSV5SZZTQWJBRHEP5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:EFBR5KVYMYSV5SZZTQWJBRHEP5","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":"f817a52055f5a1ec6d261e99cacd60bd4e2794e5f275dbe74f874765009304e5","cross_cats_sorted":["cs.MM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-03-11T14:10:29Z","title_canon_sha256":"d7ddb91e906b33d410c9a982bc1093ef53788161e25816a2ccc848477761a69b"},"schema_version":"1.0","source":{"id":"2103.06675","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.06675","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"arxiv_version","alias_value":"2103.06675v2","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.06675","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"pith_short_12","alias_value":"EFBR5KVYMYSV","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"pith_short_16","alias_value":"EFBR5KVYMYSV5SZZ","created_at":"2026-07-05T02:36:10Z"},{"alias_kind":"pith_short_8","alias_value":"EFBR5KVY","created_at":"2026-07-05T02:36:10Z"}],"graph_snapshots":[{"event_id":"sha256:e76db35af2f089c90c7c92333a1d054755c112dc1b758491be5dfb58188c4c0f","target":"graph","created_at":"2026-07-05T02:36:10Z","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/2103.06675/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The user experience in adaptive HTTP streaming relies on offering bitrate ladders with suitable operation points for all users and typically involves multiple resolutions. While open GOP coding structures are generally known to provide substantial coding efficiency benefit, their use in HTTP streaming has been precluded through lacking support of reference picture resampling (RPR) in AVC and HEVC. The newly emerging Versatile Video Coding (VVC) standard supports RPR, but only conversational scenarios were primarily investigated during the design of VVC. This paper aims at enabling usage of RPR","authors_text":"Adam Wieckowski, Benjamin Bross, Christian Bartnik, Cornelius Hellge, Robert Skupin, Thomas Schierl, Yago Sanchez","cross_cats":["cs.MM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-03-11T14:10:29Z","title":"Open GOP Resolution Switching in HTTP Adaptive Streaming with VVC"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.06675","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":"sha256:13c250433e863b3b8b4313cf12637e349564944ffdb03e9ddda5739675d98fd0","target":"record","created_at":"2026-07-05T02:36:10Z","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":"f817a52055f5a1ec6d261e99cacd60bd4e2794e5f275dbe74f874765009304e5","cross_cats_sorted":["cs.MM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2021-03-11T14:10:29Z","title_canon_sha256":"d7ddb91e906b33d410c9a982bc1093ef53788161e25816a2ccc848477761a69b"},"schema_version":"1.0","source":{"id":"2103.06675","kind":"arxiv","version":2}},"canonical_sha256":"21431eaab866255ecb399c2c90c4e47f4123bdf9c5f816f2da5627cc473b3e62","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21431eaab866255ecb399c2c90c4e47f4123bdf9c5f816f2da5627cc473b3e62","first_computed_at":"2026-07-05T02:36:10.244103Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:36:10.244103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eVAtdICla0+3fpBh9mRHwEaASCvBjflpTy3mp/IhbBlT9gSq6HbBBo0dPPFGhqfSzEDm7oOVniJ6p8N2IWJ3CA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:36:10.244600Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.06675","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13c250433e863b3b8b4313cf12637e349564944ffdb03e9ddda5739675d98fd0","sha256:e76db35af2f089c90c7c92333a1d054755c112dc1b758491be5dfb58188c4c0f"],"state_sha256":"a7570e85b935fbb81e26b7af0aaa1529efdd9507ab077122bb5e9453f274279c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i2bzHTZNgxW0Yu/uEU4gawz68XBCdATBHYdfrwf2uUazqA8jyKSR8hM4x+a2+F0py7RChkXaipzlFVHWnwlFCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T13:53:08.043542Z","bundle_sha256":"290b4b35a0ca49350027ea2b39c2a5ec5c8d18fd7fee8cd128cb3a1ba172f1ed"}}