Simply pass array of blobs. This javascript library will concatenate all blobs in single Blob object.
HTML JavaScript

README.md

ConcatenateBlobs.js npm downloads

Demo: https://www.WebRTC-Experiment.com/ConcatenateBlobs/

Simply pass array of blobs. This javascript library will concatenate all blobs in single "Blob" object.

It is MIT Licenced, which means that you can use it in any commercial/non-commercial product, free of cost.

npm install concatenateblobs

# to use in nodejs
var ConcatenateBlobs = require('concatenateblobs');
ConcatenateBlobs(array_of_blobs, blob_type, function(resultingBlob) {
    console.log(resultingBlob);
});

To use it:

<script src="./node_modules/concatenateblobs/ConcatenateBlobs.js"></script>

1. Link The Library

https://cdn.webrtc-experiment.com/ConcatenateBlobs.js

// or
https://www.webrtc-experiment.com/ConcatenateBlobs.js

2. Use it

// 2nd argument is type of "resulting-blob"
ConcatenateBlobs([arrayOfBlobs], 'audio/wav', function(resultingBlob) {

    POST_to_Server(resultingBlob);

    // or preview locally
    localVideo.src = URL.createObjectURL(resultingBlob);
});

Credits

License

ConcatenateBlobs.js is released under MIT licence . Copyright (c) Muaz Khan.