diff -r 000000000000 -r 6474c204b198 content/media/webvtt/update-webvtt.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/media/webvtt/update-webvtt.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,50 @@
+#!/usr/bin/env node
+var gift = require('gift'),
+    fs = require('fs'),
+    argv = require('optimist')
+      .usage('Update vtt.jsm with the latest from a vtt.js directory.\nUsage:' +
+             ' $0 -d [dir]')
+      .demand('d')
+      .options('d', {
+        alias: 'dir',
+        describe: 'Path to WebVTT directory.'
+      })
+      .options('w', {
+        alias: 'write',
+        describe: 'Path to file to write to.',
+        default: "./vtt.jsm"
+      })
+      .argv;
+
+var repo = gift(argv.d);
+repo.status(function(err, status) {
+  if (!status.clean) {
+    console.log("The repository's working directory is not clean. Aborting.");
+    process.exit(1);
+  }
+  repo.checkout("master", function() {
+    repo.commits("master", 1, function(err, commits) {
+      var vttjs = fs.readFileSync(argv.d + "/lib/vtt.js", 'utf8');
+
+      // Remove settings for VIM and Emacs.
+      vttjs = vttjs.replace(/\/\* -\*-.*-\*- \*\/\n/, '');
+      vttjs = vttjs.replace(/\/\* vim:.* \*\/\n/, '');
+
+      // Concatenate header and vttjs code.
+      vttjs =
+        '/* This Source Code Form is subject to the terms of the Mozilla Public\n' +
+        ' * License, v. 2.0. If a copy of the MPL was not distributed with this\n' +
+        ' * file, You can obtain one at http://mozilla.org/MPL/2.0/. */\n\n' +
+        'this.EXPORTED_SYMBOLS = ["WebVTT"];\n\n' +
+        '/**\n' +
+        ' * Code below is vtt.js the JS WebVTT implementation.\n' +
+        ' * Current source code can be found at http://github.com/mozilla/vtt.js\n' +
+        ' *\n' +
+        ' * Code taken from commit ' + commits[0].id + '\n' +
+        ' */\n' +
+        vttjs;
+
+      fs.writeFileSync(argv.w, vttjs);
+    });
+});
+});