前端mp3文件转wav文件的实现

一、音频文件格式转换

1）安装fluent-ffmpeg和ffmpeg插件

npm install fluent-ffmpeg;
npm install ffmpeg;

2）mp3转wav
test.js文件：

const ffmpeg = require('fluent-ffmpeg');

ffmpeg('./test.mp3')
.format('wav')
.audioBitrate('16k')
.audioFrequency(16000)
.audioChannels(1)
.on('error', function(err){
    console.error('An error occurred: ', err);
})
.on('progress', (progress) => {
    console.log('Processing: ' + progress.targetSize + ' KB converted');
})
.on('end', function(){
    console.log('Processing finished !');
})
.save('test.wav');

3) 执行转换

node test.js

运行test.js文件，报错“An error occurred: Error: Cannot find ffmpeg”，如下图所示

二、“An error occurred: Error: Cannot find ffmpeg”问题解决办法

1）安装’@ffmpeg-installer/ffmpeg’

npm install @ffmpeg-installer/ffmpeg

2）test.js文件修改

const ffmpegInstaller = require('@ffmpeg-installer/ffmpeg');
const ffmpeg = require('fluent-ffmpeg');
ffmpeg.setFfmpegPath(ffmpegInstaller.path);

ffmpeg('./test.mp3')
.format('wav')
.audioBitrate('16k')
.audioFrequency(16000)
.audioChannels(1)
.on('error', function(err){
    console.error('An error occurred: ', err);
})
.on('progress', (progress) => {
    console.log('Processing: ' + progress.targetSize + ' KB converted');
})
.on('end', function(){
    console.log('Processing finished !');
})
.save('test.wav');