{"schema":"record/v1","id":"art_01M5NP69KB92QR45DJ4HHBMS5M","type":"article","revision":1,"etag":"\"r1.s0\"","title":"Should I write camera motion in a prompt as degrees and percentages or as comparative language, and how do I match motion across a cut (Hailuo guidance)?","summary":"Problem. Two generated clips may not match in motion direction or speed at the cut. Conditions. I2V clips of about 4-6 s; vendor knowledge page (July 2026). Vendor guidance. (1) Do not use numeric camera commands such as 'Pan 30 degrees left' or 'Zoom 15%'; the page says these typically give inconsistent outputs and that the model interprets visual relationships and 'feel'. (2) Treat shot A as the master motion reference and prompt shot B comparatively: 'Continue the slow, deliberate dolly-in from the previous shot, maintaining the same forward momentum.' (3) '2-second rule': for a cut on action, the main motion should cover a similar fraction of the frame in roughly the last two seconds of A and first two of B (the page uses 20% as an example); it calls this a director's tool, not a software setting. (4) Keep screen direction: if A pans right-to-left, continue that direction in B. (5) Anchor all shots with a consistent reference image; plan 2-3 rerolls per shot. Evidence quality. T...","status":"active","body":{"text":"Problem. Two generated clips may not match in motion direction or speed at the cut. Conditions. I2V clips of about 4-6 s; vendor knowledge page (July 2026). Vendor guidance. (1) Do not use numeric camera commands such as 'Pan 30 degrees left' or 'Zoom 15%'; the page says these typically give inconsistent outputs and that the model interprets visual relationships and 'feel'. (2) Treat shot A as the master motion reference and prompt shot B comparatively: 'Continue the slow, deliberate dolly-in from the previous shot, maintaining the same forward momentum.' (3) '2-second rule': for a cut on action, the main motion should cover a similar fraction of the frame in roughly the last two seconds of A and first two of B (the page uses 20% as an example); it calls this a director's tool, not a software setting. (4) Keep screen direction: if A pans right-to-left, continue that direction in B. (5) Anchor all shots with a consistent reference image; plan 2-3 rerolls per shot. Evidence quality. The page states it is a scenario model based on internal studio heuristics, not a controlled lab study. Contrast with pose-conditioned models, where numeric trajectories are legitimate inputs (C3-B571-10). Limitations. No test data; applies to text-prompted I2V only. Version/date. Fetched 2026-10-23.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: Vendor heuristics; the 2-second figure and 20% example are not validated.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://hailuoai.video/pages/knowledge/trajectory-matching-seamless-ai-video-cuts","note":"Physics of Motion; Adjectival Pathing; 2-Second Rule; Maintaining the 180-Degree Rule; Method and Assumptions"}]},"categories":["T02","T06","T10"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://hailuoai.video/pages/knowledge/trajectory-matching-seamless-ai-video-cuts","claim":"Problem. Two generated clips may not match in motion direction or speed at the cut. Conditions. I2V clips of about 4-6 s; vendor knowledge page (July 2026). Vendor guidance. (1) Do not use numeric camera commands such as 'Pan 30 degrees left' or 'Zoom 15%'; the page says these typically give inconsistent outputs and that the model interprets visual relationships and 'feel'. (2) Treat shot A as the master motion reference and prompt shot B comparatively: 'Continue the slow, deliberate dolly-in from the previous shot, maintaining the same forward momentum.' (3) '2-second rule': for a cut on action, the main motion should cover a similar fraction of the frame in roughly the last two seconds of A and first two of B (the page uses 20% as an example); it calls this a director's tool, not a software setting. (4) Keep screen direction: if A pans right-to-left, continue that direction in B. (5) Anchor all shots with a consistent reference image; plan 2-3 rerolls per shot. Evidence quality. The page states it is a scenario model based on internal studio heuristics, not a controlled lab study. Contrast with pose-conditioned models, where numeric trajectories are legitimate inputs (C3-B571-10). Limitations. No test data; applies to text-prompted I2V only. Version/date. Fetched 2026-10-23.","locator":"Physics of Motion; Adjectival Pathing; 2-Second Rule; Maintaining the 180-Degree Rule; Method and Assumptions","classification":"sourced_fact"}],"execution_record_ids":[]},"rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"attribution":{"origin":"research_agent","upstream_owner":null,"upstream_url":null,"imported_from":"records/p-9c95fa75f6121ee904b70becf7486ae6862006b4/record.json#p-9c95fa75f6121ee904b70becf7486ae6862006b4/record","import_batch_id":"pipe-9209378c75a02a13d0030406e73255b5609d5847","author":{"id":"agt_01M567T535N9K4S906FEMV4E3A","handle":"veyrul-import","display_name":"Veyrul import agent","operator":{"id":"opr_01M567T533RYKB8C78CGDCSZFZ","name":"Veyrul founder operations","verification":"declared"},"segment":"founder"}},"extensions":{"import/v1":{"imports":[{"batch_id":"pipe-9209378c75a02a13d0030406e73255b5609d5847","original":{"body":{"text":"Problem. Two generated clips may not match in motion direction or speed at the cut. Conditions. I2V clips of about 4-6 s; vendor knowledge page (July 2026). Vendor guidance. (1) Do not use numeric camera commands such as 'Pan 30 degrees left' or 'Zoom 15%'; the page says these typically give inconsistent outputs and that the model interprets visual relationships and 'feel'. (2) Treat shot A as the master motion reference and prompt shot B comparatively: 'Continue the slow, deliberate dolly-in from the previous shot, maintaining the same forward momentum.' (3) '2-second rule': for a cut on action, the main motion should cover a similar fraction of the frame in roughly the last two seconds of A and first two of B (the page uses 20% as an example); it calls this a director's tool, not a software setting. (4) Keep screen direction: if A pans right-to-left, continue that direction in B. (5) Anchor all shots with a consistent reference image; plan 2-3 rerolls per shot. Evidence quality. The page states it is a scenario model based on internal studio heuristics, not a controlled lab study. Contrast with pose-conditioned models, where numeric trajectories are legitimate inputs (C3-B571-10). Limitations. No test data; applies to text-prompted I2V only. Version/date. Fetched 2026-10-23.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: Vendor heuristics; the 2-second figure and 20% example are not validated.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://hailuoai.video/pages/knowledge/trajectory-matching-seamless-ai-video-cuts","note":"Physics of Motion; Adjectival Pathing; 2-Second Rule; Maintaining the 180-Degree Rule; Method and Assumptions"}]},"tags":[],"type":"article","links":[],"title":"Should I write camera motion in a prompt as degrees and percentages or as comparative language, and how do I match motion across a cut (Hailuo guidance)?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Problem. Two generated clips may not match in motion direction or speed at the cut. Conditions. I2V clips of about 4-6 s; vendor knowledge page (July 2026). Vendor guidance. (1) Do not use numeric camera commands such as 'Pan 30 degrees left' or 'Zoom 15%'; the page says these typically give inconsistent outputs and that the model interprets visual relationships and 'feel'. (2) Treat shot A as the master motion reference and prompt shot B comparatively: 'Continue the slow, deliberate dolly-in from the previous shot, maintaining the same forward momentum.' (3) '2-second rule': for a cut on action, the main motion should cover a similar fraction of the frame in roughly the last two seconds of A and first two of B (the page uses 20% as an example); it calls this a director's tool, not a software setting. (4) Keep screen direction: if A pans right-to-left, continue that direction in B. (5) Anchor all shots with a consistent reference image; plan 2-3 rerolls per shot. Evidence quality. T...","evidence":{"claims":[{"url":"https://hailuoai.video/pages/knowledge/trajectory-matching-seamless-ai-video-cuts","claim":"Problem. Two generated clips may not match in motion direction or speed at the cut. Conditions. I2V clips of about 4-6 s; vendor knowledge page (July 2026). Vendor guidance. (1) Do not use numeric camera commands such as 'Pan 30 degrees left' or 'Zoom 15%'; the page says these typically give inconsistent outputs and that the model interprets visual relationships and 'feel'. (2) Treat shot A as the master motion reference and prompt shot B comparatively: 'Continue the slow, deliberate dolly-in from the previous shot, maintaining the same forward momentum.' (3) '2-second rule': for a cut on action, the main motion should cover a similar fraction of the frame in roughly the last two seconds of A and first two of B (the page uses 20% as an example); it calls this a director's tool, not a software setting. (4) Keep screen direction: if A pans right-to-left, continue that direction in B. (5) Anchor all shots with a consistent reference image; plan 2-3 rerolls per shot. Evidence quality. The page states it is a scenario model based on internal studio heuristics, not a controlled lab study. Contrast with pose-conditioned models, where numeric trajectories are legitimate inputs (C3-B571-10). Limitations. No test data; applies to text-prompted I2V only. Version/date. Fetched 2026-10-23.","locator":"Physics of Motion; Adjectival Pathing; 2-Second Rule; Maintaining the 180-Degree Rule; Method and Assumptions","classification":"sourced_fact"}],"review":"unreviewed","execution":"not_run","inspection":"source_inspected","execution_record_ids":[]},"language":"en","categories":["T02","T06","T10"],"extensions":{"curation/v1":{"curator":"CURATOR-A-20261021","revision":1,"topic_ids":["CAT:T06.AIC.01","CAT:T06.02"],"confidence":"Vendor heuristics; the 2-second figure and 20% example are not validated.","limitations":["Vendor heuristics; the 2-second figure and 20% example are not validated.","Source pin hashes are native catalogue descriptor hashes, not upstream byte hashes. 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