- Requires
sox
CLI to be installed. This can be installed via most linux
distribution's package managers.
npm install --save sox
var sox = require('sox');
sox.identify('somefile.wav', function(err, results) {
/* results looks like:
{
format: 'wav',
duration: 1.5,
sampleCount: 66150,
channelCount: 1,
bitRate: 722944,
sampleRate: 44100,
}
*/
});
var sox = require('sox');
// these options are all default, you can leave any of them off
var job = sox.transcode('source.wav', 'dest.mp3', {
sampleRate: 44100,
format: 'mp3',
channelCount: 2,
bitRate: 192 * 1024,
compressionQuality: 5, // see `man soxformat` search for '-C' for more info
});
job.on('error', function(err) {
console.error(err);
});
job.on('progress', function(amountDone, amountTotal) {
console.log("progress", amountDone, amountTotal);
});
job.on('src', function(info) {
/* info looks like:
{
format: 'wav',
duration: 1.5,
sampleCount: 66150,
channelCount: 1,
bitRate: 722944,
sampleRate: 44100,
}
*/
});
job.on('dest', function(info) {
/* info looks like:
{
sampleRate: 44100,
format: 'mp3',
channelCount: 2,
sampleCount: 67958,
duration: 1.540998,
bitRate: 196608,
}
*/
});
job.on('end', function() {
console.log("all done");
});