Method

Duration vs video

Sidecar audio duration vs primary video

What we measure and how

For multi-component packages, the sidecar audio's duration is compared against the primary video component's duration with a ±1-frame tolerance (intrinsic A/V consistency, not spec-tunable). A divergence beyond one frame typically indicates a sync error or a missing tail. (Cross-component duration *spread* across all components is graded separately by `pkg_duration_match`.)

Method identifier: duration_vs_video