from moviepy import VideoFileClip

def extract_audio(video_path: str, output_path: str = "audio.wav") -> str:
    # Force output path to be in /tmp
    output_path = f"/tmp/{output_path}"

    video = VideoFileClip(video_path)
    video.audio.write_audiofile(output_path, codec="pcm_s16le")
    return output_path