How to modify a MP3 metadata and save by Node.js? [closed] - node.js

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I want to achieve below goals:
Read a MP3 metadata
Modify the encoding of that metadata (if I could modify the content of that metadata, that would be better)
Save the modification to that MP3 file
All these operations could be based on native Node.js (without browser). Is there any module provide such function or I can develop based on?

Answer 1

For those coming to this question through Google, there is a node module that can do this, both read and write metadata:
https://www.npmjs.org/package/ffmetadata

Answer 2

I don't know whether there's a way to actually do the meta data manipulation in NodeJS. This is a work around way but you could do this using child_process.exec and perl:
NodeJS Code
var exec = require('child_process').exec,
child;
child = exec('perl changeTags.pl file.mp3',
function (error, stdout, stderr) {
console.log('stdout: ' + stdout);
console.log('stderr: ' + stderr);
if (error !== null) {
console.log('exec error: ' + error);
}
});
Perl code
#!/usr/bin/perl
use MP3::Tag;
$mp3 = MP3::Tag->new(#ARGV[0]); # create object
$mp3->get_tags(); # read tags
print "Attempting to print tags for #ARGV[0]\n";
if (exists $mp3->{ID3v2}) {
print "Comments: " . $mp3->{ID3v2}->comment . "\n";
print "Zip: " . $mp3->{ID3v2}->album . "\n";
print "Tags: " . $mp3->{ID3v2}->title . "\n";
} else {
print "#ARGV[0] does not have ID3v2 tags\n";
}
$mp3->close(); # destroy object
Something like that. You'd obviously want to give more arguments for what you actually want to change the meta data to.... Good luck!

Answer 3

So far i found jsmediatags is best npm package to read ID3v2 tags
var jsmediatags = require("jsmediatags");
jsmediatags.read("./song.mp3", {
onSuccess: function(tag) {
console.log(tag);
},
onError: function(error) {
console.log(':(', error.type, error.info);
}
});