set_character_voice

io.github.molkex/omni-flash-veo3-nano-banana · Verify this server

Attach a preset Gemini TTS voice to a Flow character for auto-lipsync in future videos. Synthesizes a short reference audio in the chosen voice and attaches its media_id to the character's `audio_references`. This is a ONE-TIME setup per character: any subsequent video generation that references this character will auto-lipsync with this voice (same mechanism Flow Web uses when you set a voice via its UI). Calling it again overwrites the voice. Pass sample_text=null for a short default sample — only the resulting audio is kept as a reference; the content of the text is not used for later videos. character_id: entityId from create_character / create_character_from_photo. account: Google account email that owns this character. voice: one of list_voices() (default "Algieba"). style: optional delivery hint, e.g. "calm, slow". sample_text: optional short sentence; default is a short neutral Russian sentence. project_id: optional project; omit for the account's default. Returns {entity_id, voice, media_id, audio_url, duration_sec_estimate, audio_references}.