extract_audio.py

from pathlib import Path
from tqdm import tqdm
import subprocess

txt_path = Path("testSet.txt")      # 你的 txt 文件路径
video_dir = Path("AVE")          # 视频所在目录
audio_dir = Path("AVE_Audio")    # 输出音频目录
audio_dir.mkdir(parents=True, exist_ok=True)

# 读取 ID 或目录名（txt 每行：类别&id&...）
with open(txt_path, "r", encoding="utf-8") as f:
    ids = [line.strip().split("&")[1] for line in f if line.strip()]

for vid in tqdm(ids):
    mp4_path = video_dir / f"{vid}.mp4"
    wav_path = audio_dir / f"{vid}.wav"

    if not mp4_path.exists():
        print(f"⚠️ {mp4_path} 不存在，跳过")
        continue

    cmd = [
        "ffmpeg", "-y",
        "-i", str(mp4_path),
        "-vn",
        "-acodec", "pcm_s16le",
        "-ar", "16000",
        "-ac", "1",
        str(wav_path)
    ]
    subprocess.run(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

print("✅ 转换完成")