webm-byte-stream

Node module that emits Initialization Segments and Media Segments.

Install

npm install --save webm-byte-stream

Example

var WebMByteStream = require('webm-byte-stream'),
    fs = require('fs');
 
// Media Segment durations not included by default
var webmstream = new WebMByteStream({durations: true});
 
webmstream.on('Initialization Segment', function(data) {
  var initseg = data;
  // ...
});
 
webmstream.on('Media Segment', function(data) {
  var cluster = data.cluster,
      timecode = data.timecode,
      duration = data.duration;
  // ...
});
 
var file = fs.createReadStream('./test.webm', {flags: 'r'});
 
file.on('data', function(data) {
  webmstream.write(data);
});

Format

In order to use this module, your encoding must place a keyframe at the beginning of each cluster. See the specification for more details about the WebM Byte Stream Format.

Contributing

This has only been tested for livestreaming WebM. If you need support for seekable WebM, please create an issue or pull request and I'll spend some time on it.