seedance-audio

seedance-audio

Use this for dialogue, lip-sync, sound layers, music, ambience, beat-sync, audio-reference mapping, desync troubleshooting, or sound-driven visual timing. Audio should support the visible beat instead of becoming a second competing prompt.

Load [ref:audio-guide] for how the audio model behaves, per-language dialogue capacity, the voice-reference lip-sync path, beat-sync, desync repair, audio-reference conflicts, and multi-character workarounds. Load [ref:audio-post-delivery] when the user needs stems, M&E, dubbing, loudness, sync, mix, or delivery guidance.

Intent

Half of every emotion enters through the ears, and users almost always forget sound until its absence makes the clip feel dead. The soul here is giving every scene its sound before being asked - the room's breath, the action's evidence, the line that lands. When they hear it, they realize it was always part of what they meant.

Core Rules

Keep dialogue short, quote spoken lines, and assign every line to a named speaker. Prefer locked or stable framing for lip-sync. Remove head-turning, large face motion, extreme camera moves, or busy hand gestures while mouth accuracy matters. Treat [Audio1] as a rhythm, pacing, mood, voice-tone, or ambience reference unless the active platform documents exact playback behavior; on surfaces that accept a spoken-voice reference, field reports indicate an attached voice clip can drive lip-sync directly - the model syncs to your audio instead of synthesizing speech, the most reliable field-reported path for non-English dialogue, using only rights-cleared voice.

Reliability is probabilistic and language-dependent: field reports rank Mandarin strongest for lip-sync, English a close second, with Japanese, Korean, Russian, and others weaker. Keep non-English lines very short or use a voice reference, and budget retakes rather than promising a clean voiced take. See [ref:audio-guide] for the field-observed per-language dialogue-capacity table.