{"schema":"record/v1","id":"art_01M5MENNNYD72JEZ50QBNR53KH","type":"article","revision":1,"etag":"\"r1.s0\"","title":"How do the properties written by the Python OTIO annotation hook differ from those written by the Mu Annotate mode for the same pen stroke or text box?","summary":"The OTIO import hook writes pen strokes with fixed constants (debug 1, join 3, cap 1, splat 0), copies uuid and soft-deleted state from the OTIO layer, treats invisible layers as deleted and leaves them out of frame:N.order, and writes no undo/redo stacks; the interactive Mu mode generates uuid4 ids and keeps per-user undo/redo stacks. Imported drawings therefore are not undoable like hand-drawn ones.","status":"active","body":{"text":"The OTIO import hook writes pen strokes with fixed constants (debug 1, join 3, cap 1, splat 0), copies uuid and soft-deleted state from the OTIO layer, treats invisible layers as deleted and leaves them out of frame:N.order, and writes no undo/redo stacks; the interactive Mu mode generates uuid4 ids and keeps per-user undo/redo stacks. Imported drawings therefore are not undoable like hand-drawn ones.\n\nCurator qualifications: Code read 2026-10-22 at OpenRV 27db5464; nothing run. Text font property differences from producer reading.\n\nLimitations: Code read 2026-10-22 at OpenRV 27db5464; nothing run.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://github.com/AcademySoftwareFoundation/OpenRV/blob/27db5464a90ca19a9a30d540988ee109ee06bb7e/src/plugins/rv-packages/otio_reader/annotation_hook.py","note":"otio_reader/annotation_hook.py L124-L143, L279-L287; annotate/annotate_mode.mu (uuid4 generation; undo_/redo_ stacks)"},{"url":"https://github.com/AcademySoftwareFoundation/OpenRV/blob/27db5464a90ca19a9a30d540988ee109ee06bb7e/src/plugins/rv-packages/annotate/annotate_mode.mu","note":"otio_reader/annotation_hook.py L124-L143, L279-L287; annotate/annotate_mode.mu (uuid4 generation; undo_/redo_ stacks)"},{"url":"https://github.com/AcademySoftwareFoundation/OpenRV/blob/27db5464a90ca19a9a30d540988ee109ee06bb7e/src/lib/ip/IPBaseNodes/PaintIPNode.cpp","note":"otio_reader/annotation_hook.py L124-L143, L279-L287; annotate/annotate_mode.mu (uuid4 generation; undo_/redo_ stacks)"}]},"categories":["T10","T11"],"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://github.com/AcademySoftwareFoundation/OpenRV/blob/27db5464a90ca19a9a30d540988ee109ee06bb7e/src/plugins/rv-packages/otio_reader/annotation_hook.py","claim":"The OTIO import hook writes pen strokes with fixed constants (debug 1, join 3, cap 1, splat 0), copies uuid and soft-deleted state from the OTIO layer, treats invisible layers as deleted and leaves them out of frame:N.order, and writes no undo/redo stacks; the interactive Mu mode generates uuid4 ids and keeps per-user undo/redo stacks. Imported drawings therefore are not undoable like hand-drawn ones.","locator":"otio_reader/annotation_hook.py L124-L143, L279-L287; annotate/annotate_mode.mu (uuid4 generation; undo_/redo_ stacks)","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-0a011e2ebf3dd0d5660eb7de2fb5f6a8a391587e/record.json#p-0a011e2ebf3dd0d5660eb7de2fb5f6a8a391587e/record","import_batch_id":"pipe-4ba15aee84490abf41c139e5602c63ea70bf76d7","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-4ba15aee84490abf41c139e5602c63ea70bf76d7","original":{"body":{"text":"The OTIO import hook writes pen strokes with fixed constants (debug 1, join 3, cap 1, splat 0), copies uuid and soft-deleted state from the OTIO layer, treats invisible layers as deleted and leaves them out of frame:N.order, and writes no undo/redo stacks; the interactive Mu mode generates uuid4 ids and keeps per-user undo/redo stacks. Imported drawings therefore are not undoable like hand-drawn ones.\n\nCurator qualifications: Code read 2026-10-22 at OpenRV 27db5464; nothing run. Text font property differences from producer reading.\n\nLimitations: Code read 2026-10-22 at OpenRV 27db5464; nothing run.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://github.com/AcademySoftwareFoundation/OpenRV/blob/27db5464a90ca19a9a30d540988ee109ee06bb7e/src/plugins/rv-packages/otio_reader/annotation_hook.py","note":"otio_reader/annotation_hook.py L124-L143, L279-L287; annotate/annotate_mode.mu (uuid4 generation; undo_/redo_ stacks)"},{"url":"https://github.com/AcademySoftwareFoundation/OpenRV/blob/27db5464a90ca19a9a30d540988ee109ee06bb7e/src/plugins/rv-packages/annotate/annotate_mode.mu","note":"otio_reader/annotation_hook.py L124-L143, L279-L287; annotate/annotate_mode.mu (uuid4 generation; undo_/redo_ stacks)"},{"url":"https://github.com/AcademySoftwareFoundation/OpenRV/blob/27db5464a90ca19a9a30d540988ee109ee06bb7e/src/lib/ip/IPBaseNodes/PaintIPNode.cpp","note":"otio_reader/annotation_hook.py L124-L143, L279-L287; annotate/annotate_mode.mu (uuid4 generation; undo_/redo_ stacks)"}]},"tags":[],"type":"article","links":[],"title":"How do the properties written by the Python OTIO annotation hook differ from those written by the Mu Annotate mode for the same pen stroke or text box?","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":"The OTIO import hook writes pen strokes with fixed constants (debug 1, join 3, cap 1, splat 0), copies uuid and soft-deleted state from the OTIO layer, treats invisible layers as deleted and leaves them out of frame:N.order, and writes no undo/redo stacks; the interactive Mu mode generates uuid4 ids and keeps per-user undo/redo stacks. Imported drawings therefore are not undoable like hand-drawn ones.","evidence":{"claims":[{"url":"https://github.com/AcademySoftwareFoundation/OpenRV/blob/27db5464a90ca19a9a30d540988ee109ee06bb7e/src/plugins/rv-packages/otio_reader/annotation_hook.py","claim":"The OTIO import hook writes pen strokes with fixed constants (debug 1, join 3, cap 1, splat 0), copies uuid and soft-deleted state from the OTIO layer, treats invisible layers as deleted and leaves them out of frame:N.order, and writes no undo/redo stacks; the interactive Mu mode generates uuid4 ids and keeps per-user undo/redo stacks. Imported drawings therefore are not undoable like hand-drawn ones.","locator":"otio_reader/annotation_hook.py L124-L143, L279-L287; annotate/annotate_mode.mu (uuid4 generation; undo_/redo_ stacks)","classification":"sourced_fact"}],"review":"unreviewed","execution":"not_run","inspection":"source_inspected","execution_record_ids":[]},"language":"en","categories":["T10","T11"],"extensions":{"curation/v1":{"curator":"CURATOR-A-20261021","revision":1,"topic_ids":["CAT:T04.10"],"confidence":"Low.","limitations":["Code read 2026-10-22 at OpenRV 27db5464; nothing run.","Source pin hashes are native catalogue descriptor hashes, not upstream byte hashes. 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