# Isis Commentary Lipsync Pipeline

## Scope

V2 uses `@v2/isis-commentary-lipsync-pipeline` to turn AI commentary audio and
transcripts into commentator face curves. This closes the prior Audio2Face gap
by wiring `@isis/visual-dubbing` as the V2 commentary lipsync provider.

## Contract

The pipeline runs:

1. commentary audio ingest
2. phoneme extraction
3. visual-dubbing lipsync
4. lip-sync quality validation
5. Unreal curve export

Outputs target:

- disk root: `V2/ue/Content/V2/Audio/Commentary/Lipsync`
- Unreal package root: `/Game/V2/Audio/Commentary/Lipsync`

Rendered payloads are tagged `v2.commentary.lipsync` and include commentary line
id, speaker id, locale, content root, Unreal package root, package name, and the
maximum allowed lip-sync drift.

## Rollback Boundary

Commentary lipsync is audio/visual only. Plans carry
`deterministicGameplay: false` and
`rollbackPolicy: "off-rollback-audio-visual-only"`. V2Audio may play or discard
rendered curves, but those outputs never feed gameplay simulation or rollback
state.