fix: binary issues

Author: brandonocasey

bin/parse-blocks.js

@@ -1,8 +1,8 @@
 #! /usr/bin/env node
 /* eslint-disable no-console */
 const {version} = require('../package.json');
-const {parseData} = require('../dist/ebml-helpers.js');
-const {concatTypedArrays} = require('../dist/byte-helpers.js');
+const {parseData} = require('../cjs/ebml-helpers.js');
+const {concatTypedArrays} = require('../cjs/byte-helpers.js');
 const fs = require('fs');
 const path = require('path');
 

bin/parse-format.js

@@ -1,8 +1,8 @@
 #! /usr/bin/env node
 /* eslint-disable no-console */
 const {version} = require('../package.json');
-const {parseFormatForBytes} = require('../dist/format-parser.js');
-const {concatTypedArrays} = require('../dist/byte-helpers.js');
+const {parseFormatForBytes} = require('../cjs/format-parser.js');
+const {concatTypedArrays} = require('../cjs/byte-helpers.js');
 const fs = require('fs');
 const path = require('path');
 

src/mp4-helpers.js

@@ -404,6 +404,8 @@ export const addSampleDescription = function(track, bytes) {
     const decoderConfig = esDescriptor && esDescriptor.descriptors.filter(({tag}) => tag === 0x04)[0];
 
     if (decoderConfig) {
+      // most codecs do not have a further '.'
+      // such as 0xa5 for ac-3 and 0xa6 for e-ac-3
       codec += '.' + toHexString(decoderConfig.oti);
       if (decoderConfig.oti === 0x40) {
         codec += '.' + (decoderConfig.descriptors[0].bytes[0] >> 3).toString();