Generate Audio

Generate audio directly using the Runway API. Supports text-to-speech, sound effects, voice isolation, dubbing, and speech-to-speech voice conversion.

IMPORTANT: Run scripts from the user's working directory so output files are saved where the user expects.

Usage

uv run scripts/generate_audio.py --type tts --text "Hello world" --filename "greeting.mp3" [--voice-id ID] [--api-key KEY]

Preflight

1. command -v uv must succeed
2. RUNWAYML_API_SECRET must be set, or pass --api-key

Audio Types

Type	Description	Required Args
tts	Text to speech	--text
sfx	Sound effect generation	--text
isolate	Isolate voice from audio	--audio-url
dub	Dub to another language	--audio-url, --target-language
sts	Voice conversion	--audio-url

Parameters

Param	Description	Default
--type	Audio type (required): tts, sfx, isolate, dub, sts	--
--filename	Output filename (required)	--
--text	Text input (for tts and sfx)	--
--audio-url	Audio URL or local path (for isolate, dub, sts)	--
--voice-id	Voice preset (for tts and sts, e.g. Maya, Noah, Leslie)	Maya
--target-language	Language code (for dub, e.g. "es")	--
--output-dir	Output directory	cwd
--api-key	Runway API key	env RUNWAYML_API_SECRET

Examples

Text-to-speech:

uv run scripts/generate_audio.py --type tts --text "Welcome to our product showcase" --filename "voiceover.mp3"

Sound effect:

uv run scripts/generate_audio.py --type sfx --text "Thunder rolling across a stormy sky" --filename "thunder.mp3"

Voice isolation:

uv run scripts/generate_audio.py --type isolate --audio-url "noisy-recording.mp3" --filename "clean-voice.mp3"

Speech-to-speech (voice conversion):

uv run scripts/generate_audio.py --type sts --audio-url "recording.mp3" --voice-id Noah --filename "converted.mp3"

Dubbing:

uv run scripts/generate_audio.py --type dub --audio-url "english-narration.mp3" --target-language es --filename "spanish-dub.mp3"

Output

• The script downloads the result and saves it to the specified path
• Script outputs the full path to the saved file