A demuxer for this container was not found.

[unixunion]

I am trying to use alac to play files from URL. And the demuxer cannot be found for ALAC. How do I get ALAC files to play from URL?

var AV = require('av');
require('alac');

var player = function(url) {
  console.log("play " + url)
  var p = AV.Player.fromURL(url);
  p.on('ready', function() {
    console.log('ready to play');
  });
  p.on('buffer', function(percent) {
    console.log('buffering ' + percent);
  });
  p.on('error', function(err) {
    console.log('error ' + err);
  })
  p.on('format', function(value) {
    console.log('format ' + value);
  });
  p.volume = 100;
  p.play();
}

player('/api/getfile/01%20The%20Eater%20Of%20Dreams.m4a');

in the console, I have added some debug statements to track program flow.

registering demuxer function M4ADemuxer() {
      return M4ADemuxer.__super__.constructor.apply(this, arguments);
    }
demuxer.js?fc11:104 registering demuxer function CAFDemuxer() {
      return CAFDemuxer.__super__.constructor.apply(this, arguments);
    }
demuxer.js?fc11:104 registering demuxer function AIFFDemuxer() {
      return AIFFDemuxer.__super__.constructor.apply(this, arguments);
    }
demuxer.js?fc11:104 registering demuxer function WAVEDemuxer() {
      return WAVEDemuxer.__super__.constructor.apply(this, arguments);
    }
demuxer.js?fc11:104 registering demuxer function AUDemuxer() {
      return AUDemuxer.__super__.constructor.apply(this, arguments);
    }
decoder.js?6368:105registering id:lpcm decoder: function LPCMDecoder() {
      this.readChunk = __bind(this.readChunk, this);
      return LPCMDecoder.__super__.constructor.apply(this, arguments);
    }
decoder.js?6368:105registering id:ulaw decoder: function XLAWDecoder() {
      this.readChunk = __bind(this.readChunk, this);
      return XLAWDecoder.__super__.constructor.apply(this, arguments);
    }
decoder.js?6368:105registering id:alaw decoder: function XLAWDecoder() {
      this.readChunk = __bind(this.readChunk, this);
      return XLAWDecoder.__super__.constructor.apply(this, arguments);
    }
decoder.js?049e:3decoder
ag_dec.js?50da:3ag_dec
decoder.js?049e:25Registering ALACDecoder
decoder.js?6368:105registering id:alac decoder: function ALACDecoder() {
      return ALACDecoder.__super__.constructor.apply(this, arguments);
    }
File.js?1ab7:76 play /api/getfile/01%20The%20Eater%20Of%20Dreams.m4a
buffering 0.7638004667497408
demuxer.js?fc11:113test format: function M4ADemuxer() {
      return M4ADemuxer.__super__.constructor.apply(this, arguments);
    }
m4a.js?210c:27m4a seeking
m4a.js?210c:28Stream {list: BufferList, localOffset: 0, offset: 0}
demuxer.js?fc11:122UnderflowError {name: "UnderflowError", stack: "Error↵    at new UnderflowError (eval at <anonymou…st:8000/assets/app.js:9205:2), <anonymous>:56:12)"}
demuxer.js?fc11:113test format: function CAFDemuxer() {
      return CAFDemuxer.__super__.constructor.apply(this, arguments);
    }
demuxer.js?fc11:122UnderflowError {name: "UnderflowError", stack: "Error↵    at new UnderflowError (eval at <anonymou…st:8000/assets/app.js:9205:2), <anonymous>:56:12)"}
demuxer.js?fc11:113test format: function AIFFDemuxer() {
      return AIFFDemuxer.__super__.constructor.apply(this, arguments);
    }
demuxer.js?fc11:122UnderflowError {name: "UnderflowError", stack: "Error↵    at new UnderflowError (eval at <anonymou…st:8000/assets/app.js:9205:2), <anonymous>:56:12)"}
demuxer.js?fc11:113test format: function WAVEDemuxer() {
      return WAVEDemuxer.__super__.constructor.apply(this, arguments);
    }
demuxer.js?fc11:122UnderflowError {name: "UnderflowError", stack: "Error↵    at new UnderflowError (eval at <anonymou…st:8000/assets/app.js:9205:2), <anonymous>:56:12)"}
demuxer.js?fc11:113test format: function AUDemuxer() {
      return AUDemuxer.__super__.constructor.apply(this, arguments);
    }
demuxer.js?fc11:122UnderflowError {name: "UnderflowError", stack: "Error↵    at new UnderflowError (eval at <anonymou…st:8000/assets/app.js:9205:2), <anonymous>:56:12)"}
File.js?1ab7:92error A demuxer for this container was not found.
File.js?1ab7:89buffering 24.084558295221953
File.js?1ab7:89buffering 85.09596537673015
File.js? 1ab7:89buffering 92.61631746226932
File.js?1ab7:89buffering 96.44101535345938