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scene-actor-extraction/docs
dtourolleandClaude Opus 5 9e4cdc4efc docs: bali fixture corpus, and AR-004 blocks reproducible fixtures
Records `bali/` — five ~77s clips of Road to Bali (1952) — as the fixture
source. Public domain, which is the point rather than a convenience: derived
fixtures can be committed, where anything cut from a copyrighted title could
not live in the repository at all.

Makes explicit what the tier table only implied: CI never calls a model. Not a
preference — the embedder measures ~930 ms/frame on the CPU provider, so a 77s
clip at 5 fps is six minutes of inference. Every model invocation happens
locally and CI consumes the result as data, which is what makes the T1/T2 split
load-bearing rather than stylistic.

Two properties of the corpus to design around: 480x360 puts many faces below
the AR-002 66px minimum, so generation must set and record --min-face-px; and
77s at 1 fps is too thin to exercise an extinction window measured in tens of
seconds, so fixtures want 5 fps.

The finding that matters: a trial dump produced 49 frames of an expected ~385,
stopping at 51s of 77s, with 285 frames dropped at camera_pos and 51 at
face_aligner on channel overflow. Channels drop rather than block, and what
drops depends on timing, so the same command twice can yield different dumps.
Golden fixtures cannot be built on that — AR-004 is a prerequisite for VR-001
fixtures, not just a throughput concern for crowd scenes.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

TRACES: AR-004, VR-001 | PR-002
2026-07-31 10:19:10 +02:00
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