[kickstarter] Support embedded videos (Fixes #3322)

youtube_dl/extractor/kickstarter.py

@@ -8,7 +8,7 @@ from .common import InfoExtractor
 
 class KickStarterIE(InfoExtractor):
     _VALID_URL = r'https?://www\.kickstarter\.com/projects/(?P<id>[^/]*)/.*'
-    _TEST = {
+    _TESTS = [{
         'url': 'https://www.kickstarter.com/projects/1404461844/intersection-the-story-of-josh-grant?ref=home_location',
         'md5': 'c81addca81327ffa66c642b5d8b08cab',
         'info_dict': {
@@ -18,22 +18,45 @@ class KickStarterIE(InfoExtractor):
             'description': 'A unique motocross documentary that examines the '
                 'life and mind of one of sports most elite athletes: Josh Grant.',
         },
-    }
+    }, {
+        'note': 'Embedded video (not using the native kickstarter video service)',
+        'url': 'https://www.kickstarter.com/projects/597507018/pebble-e-paper-watch-for-iphone-and-android/posts/659178',
+        'playlist': [
+            {
+                'info_dict': {
+                    'id': '78704821',
+                    'ext': 'mp4',
+                    'uploader_id': 'pebble',
+                    'uploader': 'Pebble Technology',
+                    'title': 'Pebble iOS Notifications',
+                }
+            }
+        ],
+    }]
 
     def _real_extract(self, url):
         m = re.match(self._VALID_URL, url)
         video_id = m.group('id')
         webpage = self._download_webpage(url, video_id)
 
-        video_url = self._search_regex(r'data-video-url="(.*?)"',
-            webpage, 'video URL')
-        video_title = self._html_search_regex(r'<title>(.*?)</title>',
-            webpage, 'title').rpartition('— Kickstarter')[0].strip()
+        title = self._html_search_regex(
+            r'<title>\s*(.*?)(?:\s*&mdash; Kickstarter)?\s*</title>',
+            webpage, 'title')
+        video_url = self._search_regex(
+            r'data-video-url="(.*?)"',
+            webpage, 'video URL', default=None)
+        if video_url is None:  # No native kickstarter, look for embedded videos
+            return {
+                '_type': 'url_transparent',
+                'ie_key': 'Generic',
+                'url': url,
+                'title': title,
+            }
 
         return {
             'id': video_id,
             'url': video_url,
-            'title': video_title,
+            'title': title,
             'description': self._og_search_description(webpage),
             'thumbnail': self._og_search_thumbnail(webpage),
         }