Actualización

web/assets/modernizr/feature-detects/elem-track.js

@@ -0,0 +1,11 @@
+// Track element + Timed Text Track API
+// http://www.w3.org/TR/html5/video.html#the-track-element
+// http://www.w3.org/TR/html5/media-elements.html#text-track-api
+//
+// While IE10 has implemented the track element, IE10 does not expose the underlying APIs to create timed text tracks by JS (really sad)
+// By Addy Osmani
+Modernizr.addTest({
+	texttrackapi: (typeof (document.createElement('video').addTextTrack) === 'function'),
+	// a more strict test for track including UI support: document.createElement('track').kind === 'subtitles'
+	track: ('kind' in document.createElement('track'))
+});