diff --git a/test/test_YoutubeDL.py b/test/test_YoutubeDL.py
index 5203a0273..01de10e31 100644
--- a/test/test_YoutubeDL.py
+++ b/test/test_YoutubeDL.py
@@ -8,6 +8,7 @@
 
 from test.helper import FakeYDL
 from youtube_dl import YoutubeDL
+from youtube_dl.extractor import YoutubeIE
 
 
 class YDL(FakeYDL):
@@ -33,6 +34,8 @@ def test_prefer_free_formats(self):
             {u'ext': u'mp4',  u'height': 460},
         ]
         info_dict = {u'formats': formats, u'extractor': u'test'}
+        yie = YoutubeIE(ydl)
+        yie._sort_formats(info_dict['formats'])
         ydl.process_ie_result(info_dict)
         downloaded = ydl.downloaded_info_dicts[0]
         self.assertEqual(downloaded[u'ext'], u'webm')
@@ -45,28 +48,46 @@ def test_prefer_free_formats(self):
             {u'ext': u'mp4', u'height': 1080},
         ]
         info_dict[u'formats'] = formats
+        yie = YoutubeIE(ydl)
+        yie._sort_formats(info_dict['formats'])
         ydl.process_ie_result(info_dict)
         downloaded = ydl.downloaded_info_dicts[0]
         self.assertEqual(downloaded[u'ext'], u'mp4')
 
-        # No prefer_free_formats => keep original formats order
+        # No prefer_free_formats => prefer mp4 and flv for greater compatibilty
         ydl = YDL()
         ydl.params['prefer_free_formats'] = False
         formats = [
             {u'ext': u'webm', u'height': 720},
+            {u'ext': u'mp4', u'height': 720},
             {u'ext': u'flv', u'height': 720},
         ]
         info_dict[u'formats'] = formats
+        yie = YoutubeIE(ydl)
+        yie._sort_formats(info_dict['formats'])
+        ydl.process_ie_result(info_dict)
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded[u'ext'], u'mp4')
+
+        ydl = YDL()
+        ydl.params['prefer_free_formats'] = False
+        formats = [
+            {u'ext': u'flv', u'height': 720},
+            {u'ext': u'webm', u'height': 720},
+        ]
+        info_dict[u'formats'] = formats
+        yie = YoutubeIE(ydl)
+        yie._sort_formats(info_dict['formats'])
         ydl.process_ie_result(info_dict)
         downloaded = ydl.downloaded_info_dicts[0]
         self.assertEqual(downloaded[u'ext'], u'flv')
 
     def test_format_limit(self):
         formats = [
-            {u'format_id': u'meh', u'url': u'http://example.com/meh'},
-            {u'format_id': u'good', u'url': u'http://example.com/good'},
-            {u'format_id': u'great', u'url': u'http://example.com/great'},
-            {u'format_id': u'excellent', u'url': u'http://example.com/exc'},
+            {u'format_id': u'meh', u'url': u'http://example.com/meh', 'preference': 1},
+            {u'format_id': u'good', u'url': u'http://example.com/good', 'preference': 2},
+            {u'format_id': u'great', u'url': u'http://example.com/great', 'preference': 3},
+            {u'format_id': u'excellent', u'url': u'http://example.com/exc', 'preference': 4},
         ]
         info_dict = {
             u'formats': formats, u'extractor': u'test', 'id': 'testvid'}
@@ -97,10 +118,10 @@ def test_format_limit(self):
 
     def test_format_selection(self):
         formats = [
-            {u'format_id': u'35', u'ext': u'mp4'},
-            {u'format_id': u'45', u'ext': u'webm'},
-            {u'format_id': u'47', u'ext': u'webm'},
-            {u'format_id': u'2', u'ext': u'flv'},
+            {u'format_id': u'35', u'ext': u'mp4', 'preference': 1},
+            {u'format_id': u'45', u'ext': u'webm', 'preference': 2},
+            {u'format_id': u'47', u'ext': u'webm', 'preference': 3},
+            {u'format_id': u'2', u'ext': u'flv', 'preference': 4},
         ]
         info_dict = {u'formats': formats, u'extractor': u'test'}
 
@@ -129,6 +150,42 @@ def test_format_selection(self):
         downloaded = ydl.downloaded_info_dicts[0]
         self.assertEqual(downloaded['format_id'], u'35')
 
+    def test_youtube_format_selection(self):
+        order = [
+            '38', '37', '46', '22', '45', '35', '44', '18', '34', '43', '6', '5', '36', '17', '13',
+            # Apple HTTP Live Streaming
+            '96', '95', '94', '93', '92', '132', '151',
+            # 3D
+            '85', '84', '102', '83', '101', '82', '100',
+            # Dash video
+            '138', '137', '248', '136', '247', '135', '246',
+            '245', '244', '134', '243', '133', '242', '160',
+            # Dash audio
+            '141', '172', '140', '139', '171',
+        ]
+
+        for f1id, f2id in zip(order, order[1:]):
+            f1 = YoutubeIE._formats[f1id].copy()
+            f1['format_id'] = f1id
+            f2 = YoutubeIE._formats[f2id].copy()
+            f2['format_id'] = f2id
+
+            info_dict = {'formats': [f1, f2], 'extractor': 'youtube'}
+            ydl = YDL()
+            yie = YoutubeIE(ydl)
+            yie._sort_formats(info_dict['formats'])
+            ydl.process_ie_result(info_dict)
+            downloaded = ydl.downloaded_info_dicts[0]
+            self.assertEqual(downloaded['format_id'], f1id)
+
+            info_dict = {'formats': [f2, f1], 'extractor': 'youtube'}
+            ydl = YDL()
+            yie = YoutubeIE(ydl)
+            yie._sort_formats(info_dict['formats'])
+            ydl.process_ie_result(info_dict)
+            downloaded = ydl.downloaded_info_dicts[0]
+            self.assertEqual(downloaded['format_id'], f1id)
+
     def test_add_extra_info(self):
         test_dict = {
             'extractor': 'Foo',