[livestream] Fix events extraction (fixes #1467)

test/test_playlists.py

@@ -15,6 +15,7 @@ from youtube_dl.extractor import (
     VimeoChannelIE,
     UstreamChannelIE,
     SoundcloudUserIE,
+    LivestreamIE,
 )
 from youtube_dl.utils import *
 
@@ -32,6 +33,7 @@ class TestPlaylists(unittest.TestCase):
         self.assertIsPlaylist(result)
         self.assertEqual(result['title'], u'SPORT')
         self.assertTrue(len(result['entries']) > 20)
+
     def test_dailymotion_user(self):
         dl = FakeYDL()
         ie = DailymotionUserIE(dl)
@@ -64,5 +66,13 @@ class TestPlaylists(unittest.TestCase):
         self.assertEqual(result['id'], u'9615865')
         self.assertTrue(len(result['entries']) >= 12)
 
+    def test_livestream_event(self):
+        dl = FakeYDL()
+        ie = LivestreamIE(dl)
+        result = ie.extract('http://new.livestream.com/tedx/cityenglish')
+        self.assertIsPlaylist(result)
+        self.assertEqual(result['title'], u'TEDCity2.0 (English)')
+        self.assertTrue(len(result['entries']) >= 4)
+
 if __name__ == '__main__':
     unittest.main()

youtube_dl/extractor/livestream.py

@@ -2,7 +2,12 @@ import re
 import json
 
 from .common import InfoExtractor
-from ..utils import compat_urllib_parse_urlparse, compat_urlparse
+from ..utils import (
+    compat_urllib_parse_urlparse,
+    compat_urlparse,
+    get_meta_content,
+    ExtractorError,
+)
 
 
 class LivestreamIE(InfoExtractor):
@@ -35,8 +40,11 @@ class LivestreamIE(InfoExtractor):
 
         if video_id is None:
             # This is an event page:
-            api_url = self._search_regex(r'event_design_eventId: \'(.+?)\'',
+            player = get_meta_content('twitter:player', webpage)
-                                         webpage, 'api url')
+            if player is None:
+                raise ExtractorError('Couldn\'t extract event api url')
+            api_url = player.replace('/player', '')
+            api_url = re.sub(r'^(https?://)(new\.)', r'\1api.\2', api_url)
             info = json.loads(self._download_webpage(api_url, event_name,
                                                      u'Downloading event info'))
             videos = [self._extract_video_info(video_data['data'])