{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:SYJBMWVZEXHKYH4VSZ2N7QJNQQ","short_pith_number":"pith:SYJBMWVZ","canonical_record":{"source":{"id":"2607.00983","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-01T14:19:24Z","cross_cats_sorted":[],"title_canon_sha256":"e99bf3f9e69138f938bb8d26ae752c686d8f9c420c39a3159c92a78d01b329ed","abstract_canon_sha256":"e860651fcc8c094d630e57520d0243a4785c0b30440cff5d68908fc05bbd5caf"},"schema_version":"1.0"},"canonical_sha256":"9612165ab925ceac1f959674dfc12d840db47fb743dcd03e864af5c5583fa938","source":{"kind":"arxiv","id":"2607.00983","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.00983","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"arxiv_version","alias_value":"2607.00983v1","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.00983","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"pith_short_12","alias_value":"SYJBMWVZEXHK","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"pith_short_16","alias_value":"SYJBMWVZEXHKYH4V","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"pith_short_8","alias_value":"SYJBMWVZ","created_at":"2026-07-02T01:18:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:SYJBMWVZEXHKYH4VSZ2N7QJNQQ","target":"record","payload":{"canonical_record":{"source":{"id":"2607.00983","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-01T14:19:24Z","cross_cats_sorted":[],"title_canon_sha256":"e99bf3f9e69138f938bb8d26ae752c686d8f9c420c39a3159c92a78d01b329ed","abstract_canon_sha256":"e860651fcc8c094d630e57520d0243a4785c0b30440cff5d68908fc05bbd5caf"},"schema_version":"1.0"},"canonical_sha256":"9612165ab925ceac1f959674dfc12d840db47fb743dcd03e864af5c5583fa938","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-02T01:18:25.183161Z","signature_b64":"bD2iAH2nRvaZ+q4HSAS17JHmfexFkKq/Y9rTACCHHUA1ADven0GQXaxSTC5mIi3tpMSfZWngjLBwN1YvB1noBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9612165ab925ceac1f959674dfc12d840db47fb743dcd03e864af5c5583fa938","last_reissued_at":"2026-07-02T01:18:25.182789Z","signature_status":"signed_v1","first_computed_at":"2026-07-02T01:18:25.182789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.00983","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-02T01:18:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TavGfvwcR3uMF34o+c6SHp3+UH7nPAVrxFmMQIAn9UoMHXqpHs01tWzmVpfPYflYdyEroFwT5ERdhvWo4hBPBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T02:37:03.968263Z"},"content_sha256":"2cc9953e42aa45462862c5a7b3ceedd8ffde3dc2ed7b8b24788bdc92bc092bde","schema_version":"1.0","event_id":"sha256:2cc9953e42aa45462862c5a7b3ceedd8ffde3dc2ed7b8b24788bdc92bc092bde"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:SYJBMWVZEXHKYH4VSZ2N7QJNQQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"QCA: Query- and Content-Aware Keyframe Selection for Long Video Understanding","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Baiyang Song, Hui Li, Jie Li, Jun Peng, Rongrong Ji, Yiyi Zhou, Yonghong Tian","submitted_at":"2026-07-01T14:19:24Z","abstract_excerpt":"Video understanding is often plagued by severe temporal redundancy, where processing dense frame sequences is both semantically inefficient and computationally expensive. This challenge is further amplified when only a small subset of frames is truly relevant to the given query. In this paper, we propose a Query- and Content-Aware (QCA) keyframe selection framework that can select a compact yet information-rich set of frames from long videos. QCA first partitions the video into temporal segments and estimates the information contribution of each segment by jointly modeling query relevance and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.00983","kind":"arxiv","version":1},"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/2607.00983/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":"2026-07-02T01:18:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nWIvC30b9aHaQTiAX+MgYRH1PRzcFbkU6hYIP3VBkxQb46a8/BgQ+DCWNyu4jqeusgd3NdS7sdCMJMsjpkvZAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T02:37:03.968658Z"},"content_sha256":"c476821e9f82015f1b898ef510824581dab3493d3319dc29b090daae809f14e1","schema_version":"1.0","event_id":"sha256:c476821e9f82015f1b898ef510824581dab3493d3319dc29b090daae809f14e1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SYJBMWVZEXHKYH4VSZ2N7QJNQQ/bundle.json","state_url":"https://pith.science/pith/SYJBMWVZEXHKYH4VSZ2N7QJNQQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SYJBMWVZEXHKYH4VSZ2N7QJNQQ/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":"2026-07-03T02:37:03Z","links":{"resolver":"https://pith.science/pith/SYJBMWVZEXHKYH4VSZ2N7QJNQQ","bundle":"https://pith.science/pith/SYJBMWVZEXHKYH4VSZ2N7QJNQQ/bundle.json","state":"https://pith.science/pith/SYJBMWVZEXHKYH4VSZ2N7QJNQQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SYJBMWVZEXHKYH4VSZ2N7QJNQQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:SYJBMWVZEXHKYH4VSZ2N7QJNQQ","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":"e860651fcc8c094d630e57520d0243a4785c0b30440cff5d68908fc05bbd5caf","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-01T14:19:24Z","title_canon_sha256":"e99bf3f9e69138f938bb8d26ae752c686d8f9c420c39a3159c92a78d01b329ed"},"schema_version":"1.0","source":{"id":"2607.00983","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.00983","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"arxiv_version","alias_value":"2607.00983v1","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.00983","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"pith_short_12","alias_value":"SYJBMWVZEXHK","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"pith_short_16","alias_value":"SYJBMWVZEXHKYH4V","created_at":"2026-07-02T01:18:25Z"},{"alias_kind":"pith_short_8","alias_value":"SYJBMWVZ","created_at":"2026-07-02T01:18:25Z"}],"graph_snapshots":[{"event_id":"sha256:c476821e9f82015f1b898ef510824581dab3493d3319dc29b090daae809f14e1","target":"graph","created_at":"2026-07-02T01:18:25Z","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/2607.00983/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Video understanding is often plagued by severe temporal redundancy, where processing dense frame sequences is both semantically inefficient and computationally expensive. This challenge is further amplified when only a small subset of frames is truly relevant to the given query. In this paper, we propose a Query- and Content-Aware (QCA) keyframe selection framework that can select a compact yet information-rich set of frames from long videos. QCA first partitions the video into temporal segments and estimates the information contribution of each segment by jointly modeling query relevance and ","authors_text":"Baiyang Song, Hui Li, Jie Li, Jun Peng, Rongrong Ji, Yiyi Zhou, Yonghong Tian","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-01T14:19:24Z","title":"QCA: Query- and Content-Aware Keyframe Selection for Long Video Understanding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.00983","kind":"arxiv","version":1},"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":"sha256:2cc9953e42aa45462862c5a7b3ceedd8ffde3dc2ed7b8b24788bdc92bc092bde","target":"record","created_at":"2026-07-02T01:18:25Z","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":"e860651fcc8c094d630e57520d0243a4785c0b30440cff5d68908fc05bbd5caf","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-01T14:19:24Z","title_canon_sha256":"e99bf3f9e69138f938bb8d26ae752c686d8f9c420c39a3159c92a78d01b329ed"},"schema_version":"1.0","source":{"id":"2607.00983","kind":"arxiv","version":1}},"canonical_sha256":"9612165ab925ceac1f959674dfc12d840db47fb743dcd03e864af5c5583fa938","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9612165ab925ceac1f959674dfc12d840db47fb743dcd03e864af5c5583fa938","first_computed_at":"2026-07-02T01:18:25.182789Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-02T01:18:25.182789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bD2iAH2nRvaZ+q4HSAS17JHmfexFkKq/Y9rTACCHHUA1ADven0GQXaxSTC5mIi3tpMSfZWngjLBwN1YvB1noBQ==","signature_status":"signed_v1","signed_at":"2026-07-02T01:18:25.183161Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.00983","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2cc9953e42aa45462862c5a7b3ceedd8ffde3dc2ed7b8b24788bdc92bc092bde","sha256:c476821e9f82015f1b898ef510824581dab3493d3319dc29b090daae809f14e1"],"state_sha256":"0c1768b9dbafacc9ac66b0d3bbbd8af3e80775845654ba52d9c2d32e61fec9fa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WY3riEU02nAw/P9yuh4B9fxWbQed0TwcMH4DNWf6iUJbB9+wbShx3ifGcRDwh0Arir9s6YZg8i/RtAfwJcquCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T02:37:03.970632Z","bundle_sha256":"e401e11564f4e57753b4839ab1e86405c90f82d41538375bcec052f64181831e"}}