在React中如何将录音的Blob流切分并转换成多个5秒的WAV文件？

import { createFFmpeg, fetchFile } from '@ffmpeg/ffmpeg';

const ffmpeg = createFFmpeg({ log: true });

async function cutAudio(blob, duration = 5) {
    await ffmpeg.load();
    const inputFileName = 'input.wav';
    const outputFileName = 'output_%03d.wav';

    ffmpeg.FS('writeFile', inputFileName, await fetchFile(blob));

    await ffmpeg.run('-i', inputFileName, '-f', 'segment', '-segment_time', duration, '-c', 'copy', outputFileName);

    const files = ffmpeg.FS('readdir', '.').filter(file => file.startsWith('output_'));
    const outputBlobs = [];

    for (const file of files) {
        const data = ffmpeg.FS('readFile', file);
        outputBlobs.push(new Blob([data.buffer], { type: 'audio/wav' }));
    }

    return outputBlobs;
}

// 使用示例 (假设 audioBlob 已经包含完整的录音数据)
const audioBlob = new Blob(audioChunksRef.current, { type: 'audio/wav' }); // 替换为你的Blob获取方式
const cutBlobs = await cutAudio(audioBlob);

cutBlobs.forEach((blob, index) => {
    const url = URL.createObjectURL(blob);
    const a = document.createElement('a');
    a.href = url;
    a.download = `recording_${index}.wav`;
    a.click();
    URL.revokeObjectURL(url);
});