{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:FUQ7OMNJG64TAVTZ6AAY2ZRQ4V","short_pith_number":"pith:FUQ7OMNJ","canonical_record":{"source":{"id":"2502.15894","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-02-21T19:28:05Z","cross_cats_sorted":[],"title_canon_sha256":"7902db6f31b3943cc98c3452cf3c604d708598d510e2e8f5dc92bb807347713e","abstract_canon_sha256":"8604f6b630fb76c90409fe77abcca512d39bfc55679e28cfecae23077c32b9e5"},"schema_version":"1.0"},"canonical_sha256":"2d21f731a937b9305679f0018d6630e57685130f63c294304a8fcfc54c2e3436","source":{"kind":"arxiv","id":"2502.15894","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.15894","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"arxiv_version","alias_value":"2502.15894v3","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.15894","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"pith_short_12","alias_value":"FUQ7OMNJG64T","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"pith_short_16","alias_value":"FUQ7OMNJG64TAVTZ","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"pith_short_8","alias_value":"FUQ7OMNJ","created_at":"2026-07-05T11:49:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:FUQ7OMNJG64TAVTZ6AAY2ZRQ4V","target":"record","payload":{"canonical_record":{"source":{"id":"2502.15894","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-02-21T19:28:05Z","cross_cats_sorted":[],"title_canon_sha256":"7902db6f31b3943cc98c3452cf3c604d708598d510e2e8f5dc92bb807347713e","abstract_canon_sha256":"8604f6b630fb76c90409fe77abcca512d39bfc55679e28cfecae23077c32b9e5"},"schema_version":"1.0"},"canonical_sha256":"2d21f731a937b9305679f0018d6630e57685130f63c294304a8fcfc54c2e3436","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:49:50.785430Z","signature_b64":"kk2k+utaOmDZOq8TDUAYaTggx82NmF8iCZUmIEFIwa0F8QIGN5h5i/pW+QrzhFBsmDU9RwMlG/lQgjdL5hopAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d21f731a937b9305679f0018d6630e57685130f63c294304a8fcfc54c2e3436","last_reissued_at":"2026-07-05T11:49:50.784953Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:49:50.784953Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.15894","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:49:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QnzjcBWooDSLBJTRhMI97gRfTjw+KmGOge2lSgnZkNnLlpcLQbU2NOfFmnnrC00vYhzorGo/z5AXgJHlT+vQBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T01:09:05.496814Z"},"content_sha256":"ea93e3692bacd77316ecde96158245f9d9f942b7b26af1c6036df10b1b9493ae","schema_version":"1.0","event_id":"sha256:ea93e3692bacd77316ecde96158245f9d9f942b7b26af1c6036df10b1b9493ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:FUQ7OMNJG64TAVTZ6AAY2ZRQ4V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"RIFLEx: A Free Lunch for Length Extrapolation in Video Diffusion Transformers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Chongxuan Li, Guande He, Hongzhou Zhu, Jun Zhu, Min Zhao, Yixiao Chen","submitted_at":"2025-02-21T19:28:05Z","abstract_excerpt":"Recent advancements in video generation have enabled models to synthesize high-quality, minute-long videos. However, generating even longer videos with temporal coherence remains a major challenge and existing length extrapolation methods lead to temporal repetition or motion deceleration. In this work, we systematically analyze the role of frequency components in positional embeddings and identify an intrinsic frequency that primarily governs extrapolation behavior. Based on this insight, we propose RIFLEx, a minimal yet effective approach that reduces the intrinsic frequency to suppress repe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.15894","kind":"arxiv","version":3},"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/2502.15894/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":"2026-07-05T11:49:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ct4mlogpiyk5oJp0i2hC5ih2pUR06WgWr9NqOKfvpnDFNxxe710Lk23/XuT2IeTfdF64Yb8gQy6kh+QhC9r+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T01:09:05.497292Z"},"content_sha256":"12ef0872c77e304c26bf5f14bbb61a1702b95b75f94a6b8f470d1ab53d4c8446","schema_version":"1.0","event_id":"sha256:12ef0872c77e304c26bf5f14bbb61a1702b95b75f94a6b8f470d1ab53d4c8446"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FUQ7OMNJG64TAVTZ6AAY2ZRQ4V/bundle.json","state_url":"https://pith.science/pith/FUQ7OMNJG64TAVTZ6AAY2ZRQ4V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FUQ7OMNJG64TAVTZ6AAY2ZRQ4V/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":"2026-08-06T01:09:05Z","links":{"resolver":"https://pith.science/pith/FUQ7OMNJG64TAVTZ6AAY2ZRQ4V","bundle":"https://pith.science/pith/FUQ7OMNJG64TAVTZ6AAY2ZRQ4V/bundle.json","state":"https://pith.science/pith/FUQ7OMNJG64TAVTZ6AAY2ZRQ4V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FUQ7OMNJG64TAVTZ6AAY2ZRQ4V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:FUQ7OMNJG64TAVTZ6AAY2ZRQ4V","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":"8604f6b630fb76c90409fe77abcca512d39bfc55679e28cfecae23077c32b9e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-02-21T19:28:05Z","title_canon_sha256":"7902db6f31b3943cc98c3452cf3c604d708598d510e2e8f5dc92bb807347713e"},"schema_version":"1.0","source":{"id":"2502.15894","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.15894","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"arxiv_version","alias_value":"2502.15894v3","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.15894","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"pith_short_12","alias_value":"FUQ7OMNJG64T","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"pith_short_16","alias_value":"FUQ7OMNJG64TAVTZ","created_at":"2026-07-05T11:49:50Z"},{"alias_kind":"pith_short_8","alias_value":"FUQ7OMNJ","created_at":"2026-07-05T11:49:50Z"}],"graph_snapshots":[{"event_id":"sha256:12ef0872c77e304c26bf5f14bbb61a1702b95b75f94a6b8f470d1ab53d4c8446","target":"graph","created_at":"2026-07-05T11:49:50Z","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/2502.15894/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent advancements in video generation have enabled models to synthesize high-quality, minute-long videos. However, generating even longer videos with temporal coherence remains a major challenge and existing length extrapolation methods lead to temporal repetition or motion deceleration. In this work, we systematically analyze the role of frequency components in positional embeddings and identify an intrinsic frequency that primarily governs extrapolation behavior. Based on this insight, we propose RIFLEx, a minimal yet effective approach that reduces the intrinsic frequency to suppress repe","authors_text":"Chongxuan Li, Guande He, Hongzhou Zhu, Jun Zhu, Min Zhao, Yixiao Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-02-21T19:28:05Z","title":"RIFLEx: A Free Lunch for Length Extrapolation in Video Diffusion Transformers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.15894","kind":"arxiv","version":3},"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:ea93e3692bacd77316ecde96158245f9d9f942b7b26af1c6036df10b1b9493ae","target":"record","created_at":"2026-07-05T11:49:50Z","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":"8604f6b630fb76c90409fe77abcca512d39bfc55679e28cfecae23077c32b9e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-02-21T19:28:05Z","title_canon_sha256":"7902db6f31b3943cc98c3452cf3c604d708598d510e2e8f5dc92bb807347713e"},"schema_version":"1.0","source":{"id":"2502.15894","kind":"arxiv","version":3}},"canonical_sha256":"2d21f731a937b9305679f0018d6630e57685130f63c294304a8fcfc54c2e3436","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d21f731a937b9305679f0018d6630e57685130f63c294304a8fcfc54c2e3436","first_computed_at":"2026-07-05T11:49:50.784953Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:49:50.784953Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kk2k+utaOmDZOq8TDUAYaTggx82NmF8iCZUmIEFIwa0F8QIGN5h5i/pW+QrzhFBsmDU9RwMlG/lQgjdL5hopAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:49:50.785430Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.15894","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea93e3692bacd77316ecde96158245f9d9f942b7b26af1c6036df10b1b9493ae","sha256:12ef0872c77e304c26bf5f14bbb61a1702b95b75f94a6b8f470d1ab53d4c8446"],"state_sha256":"54f6775ae34e5a0a9a87cc938d50292aa280d8852ddd91813a814534090eb86e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0WkdC/vMHvGWESNa7cls1QUc/tBkjmtTcHu6vj1u9l3MY1NUiTIUxuUX8RsVqfZ0mS4GbUwOsaNdnUb12Us4Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T01:09:05.500536Z","bundle_sha256":"1cb676019eee399c151fee4566df93267e889b727905b9a57bb270d30ca20b59"}}