wx-voice

Convert audio files between Tencent apps (Weixin / Wechat, QQ) and Silk codec with other general formats such as MP3 and M4A
中文版

Install

$ npm install wx-voice --save
$ npm install wx-voice -g
$ wx-voice compile

Prerequisites

• Ffmpeg: Installing ffmpeg
• Build tools: Installing build tools

CLI Usage

wx-voice <command> <options>

Example:
$ wx-voice decode -i input.silk -o output.mp3 -f mp3
$ wx-voice encode -i input.mp3 -o output.silk -f silk

CLI

Command:
  decode    decode to general audio format
  encode    encode from general audio format
  compile   compile wx-voice library
  clean     remove compiled library

Options:
  -i <input>    input file path
  -o <output>   output file path
  -f <format>   format of the output file
  --bitrate     bitrate of the output file
  --frequency   frequency of the output file
  --channels    channels of the output file

API Usage

// Initialize
const WxVoice = require('wx-voice');
var voice = new WxVoice();

// Error handler
voice.on("error", (err) => console.log(err));

// Decode silk to MP3
voice.decode(
    "input.silk", "output.mp3", { format: "mp3" },
    (file) => console.log(file));

// Output: "/path/to/output.mp3"

API

new WxVoice([tempFolder, [ffmpegPath]])

Initialize wxVoice object

decode(input, output, [options, [callback]])

Decode the audio to general formats

encode(input, output, [options, [callback]])

Encode the audio to silk/webm format

voice.encode(
    "input.mp3", "output.silk", { format: "silk" },
    (file) => console.log(file));

// Output: "/path/to/output.silk"

duration(filePath, [callback])

Get the duration of the audio file
(Decode to general audio format before calling this method)

voice.encode("output.mp3", (dur) => console.log(dur));
// Output: "10.290"

Options

Javascript Object to set options for the output file

File types

Decode: Tested on mp3, m4a, wav, pcm
Encode: Tested on silk, silk_amr, webm

Todo

• Use options as parameter instead of multiple arguments
• Timeout to stop the convert process if it takes too long
• Batch conversion using command line
• Support Windows

Installing build tools

Installing ffmpeg

Ubuntu

$ sudo add-apt-repository ppa:mc3man/trusty-media  
$ sudo apt-get update  
$ sudo apt-get install ffmpeg

CentOS

$ sudo yum install epel-release
$ sudo yum update
$ sudo rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro

For CentOS 7:

$ sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm

For CentOS 6:

$ sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el6/x86_64/nux-dextop-release-0-2.el6.nux.noarch.rpm

Install FFMPEG:

$ sudo yum install ffmpeg

Mac

$ brew install ffmpeg

License

MIT © Ang YC