nx_recording.nx

nx_recording.nx -- LIVE vs RECORDING/advertisement classifier over a sequence of perceptual frame fingerprints. R1 of the MEDIA-STUDIO arc. A "recording" (a slate, advertisement, or a frozen/looping clip put up in place of a live feed) shows one of two temporal signatures: STATIC-HOLD : a sustained run of near-identical frames (a frozen image held for >= hold_frames frames). One static pair is just dead-air (R0); a long HOLD is a recording. LOOP : the same frame recurs after a gap of >= min_period frames (the clip is looping). Either signature => RECORDING; otherwise LIVE. Fingerprints are 64-bit perceptual hashes (nx_phash aHash/dHash); "near- identical" = Hamming distance <= near, reusing nx_simhash's Hamming kernel. All thresholds are CALLER-supplied (data-driven, no magic numbers here). genealogy_id: perceptual_hash_temporal_recurrence (record-hint, unverified) lineage_id: frame_fingerprint_sequence + run_length + periodic_recurrence nx_safety_envelope: intended_use: "Flag recorded/looped/advertisement segments in a stream so the trim planner (R3) can cut them." verdict: NOT_YET_EVALUATED license_tier: ORIGINAL