ffmpeg -i input.mp4 output.wav

def extract_audio(self, video_path):
    if not os.path.isfile(video_path):
        self.progress_queue.put((video_path, "文件不存在", 0))
        return

    output_dir = os.path.dirname(video_path)
    output_filename = os.path.splitext(os.path.basename(video_path))[0] + ".wav"
    output_path = os.path.join(output_dir, output_filename)

    self.progress_queue.put((video_path, "", 0))
    try:
        command = [
            FFMPEG_PATH, 
            '-i', video_path, 
            '-vn', 
            '-af', 'aresample=async=1',
            '-acodec', 'pcm_s16le', 
            '-ar', '44100', 
            '-ac', '2', 
            '-y',  # 这个选项会覆盖输出文件
            output_path
        ]

        process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        while True:
            output = process.stderr.read(1)
            if process.poll() is not None and output == b'':
                break
                if output:
                    progress = self.calculate_progress(output)
                    self.progress_queue.put((video_path, "", progress))

                    process.wait()
                    if process.returncode == 0:
                        self.progress_queue.put((video_path, f"成功提取音频到: {output_path}", 100))  
                    else:
                        self.progress_queue.put((video_path, f"提取失败: {video_path}", 0))  

                    except subprocess.CalledProcessError as e:
                        self.progress_queue.put((video_path, f"发生错误: {video_path}", 0))

'-vn', 
'-af', 'aresample=async=1',
'-acodec', 'pcm_s16le', 
'-ar', '44100', 
'-ac', '2',