Python结合FFmpeg实现批量提取视频音频

python --version

ffmpeg -version

brew install ffmpeg

ffmpeg -version

sudo apt update
sudo apt install ffmpeg

sudo yum install ffmpeg

import os
import subprocess

def extract_audio(video_file, output_dir):
    # 构建输出文件路径
    output_file = os.path.join(
        output_dir,
        os.path.splitext(os.path.basename(video_file))[0] + '.mp3'
    )

    # ffmpeg 命令
    command = [
        'ffmpeg',
        '-i', video_file,
        '-vn',                    # 不处理视频流
        '-acodec', 'libmp3lame',  # MP3 编码器
        '-ab', '192k',            # 音频码率
        output_file
    ]

    try:
        subprocess.run(command, check=True)
        print(f"✅ 音频已提取：{output_file}")
    except subprocess.CalledProcessError:
        print(f"❌ 处理失败：{video_file}")

def process_videos(input_dir, output_dir):
    os.makedirs(output_dir, exist_ok=True)

    for file_name in os.listdir(input_dir):
        if file_name.lower().endswith(('.mp4', '.mov', '.avi', '.mkv')):
            video_path = os.path.join(input_dir, file_name)
            extract_audio(video_path, output_dir)

if __name__ == "__main__":
    input_dir = './v'
    output_dir = './mp3'
    process_videos(input_dir, output_dir)

python extract_audio.py