This module provides Vorbis Encoder and Decoder classes compatible with node-ogg
streams.
node-vorbis comes bundled with its own copy of libvorbis, so
there's no need to have the library pre-installed on your system.
Simply compile and install node-vorbis using npm:
$ npm install vorbisDecoder example:
var fs = require('fs');
var ogg = require('ogg');
var vorbis = require('vorbis');
var file = __dirname + '/Hydrate-Kenny_Beltrey.ogg';
var od = new ogg.Decoder();
od.on('stream', function (stream) {
var vd = new vorbis.Decoder();
// the "format" event contains the raw PCM format
vd.on('format', function (format) {
// send the raw PCM data to stdout
vd.pipe(process.stdout);
});
// an "error" event will get emitted if the stream is not a Vorbis stream
// (i.e. it could be a Theora video stream instead)
vd.on('error', function (err) {
// maybe try another decoder...
});
stream.pipe(vd);
});
fs.createReadStream(file).pipe(od);Encoder example:
var ogg = require('ogg');
var vorbis = require('vorbis');
var oe = new ogg.Encoder();
var ve = new vorbis.Encoder();
// not yet implemented...
ve.addComment('ARTIST', 'Bob Marley');
// `process.stdin` *MUST* be PCM float 32-bit signed little-endian samples.
// channels and sample rate are configurable but default to 2 and 44,100hz.
process.stdin.pipe(ve)
// send the encoded Vorbis pages to the Ogg encoder
ve.pipe(oe.stream());
// write the produced Ogg file with Vorbis audio to `process.stdout`
oe.pipe(process.stdout);See the examples directory for some more example code.