Status: Accepted
Date: 2026-05-25
Context#
The Period Vice Squad path needs readable facial tells and interrogation performance quality comparable to classic scan-based detective games, while V5 must use a maintainable UE5.5-compatible pipeline.
Decision#
V5 implements the MotionScan-equivalent pipeline through MetaHuman capture, high-fidelity facial solve data, performance clips, tell annotations, and interrogation scoring assets.
Capture Stage Requirements#
- The face stage uses a calibrated 12-camera capture volume and records MetaHuman-compatible facial performance solves as 60 fps USD blendshape stacks.
- Every principal actor receives a 16-hour FACS calibration session before production takes. Calibration covers neutral, range, asymmetry, and fatigue passes for the required action-unit groups.
- Each tell take must carry actor id, voice-line id, tell type, USD take id, trim frames, blend-in/out frames, blend weight, and the Sequencer section id that owns playback in cinematic review.
- The quality gate rejects takes that miss minimum frame count, 60 fps capture rate, required FACS coverage, or valid trim ranges. Failed takes enter the retake pipeline with a quality-gate reason tag.
- VO sync accepts full lipsync playback only when the trimmed facial duration and voice duration are within 250 ms.
Consequences#
- Facial-capture content targets MetaHuman-compatible runtime playback.
- Interrogation scoring keys off authored tell metadata.
- The pipeline remains compatible with Sequencer and cinematic review tooling.