# video_processor.py
from moviepy import VideoFileClip
import os

def extract_audio(video_path, output_audio_path):
    """從影片中提取音軌並轉為 wav 格式"""
    try:
        # 載入影片
        video = VideoFileClip(video_path)
        # 提取音軌
        audio = video.audio
        # 寫出音檔 (設定為 16000Hz 以利 ASR 辨識)
        audio.write_audiofile(output_audio_path, fps=16000, nbytes=2, codec='pcm_s16le')
        # 關閉資源釋放記憶體
        video.close()
        audio.close()
        return True
    except Exception as e:
        print(f"影片音軌提取失敗: {e}")
        return False