[escapist] Filter video differently (Fixes #4919)

youtube_dl/extractor/common.py

@@ -271,7 +271,7 @@ class InfoExtractor(object):
             raise
         except compat_http_client.IncompleteRead as e:
             raise ExtractorError('A network error has occured.', cause=e, expected=True)
-        except (KeyError,) as e:
+        except (KeyError, StopIteration) as e:
             raise ExtractorError('An extractor error has occured.', cause=e)
 
     def set_downloader(self, downloader):

youtube_dl/extractor/escapist.py

@@ -54,8 +54,11 @@ class EscapistIE(InfoExtractor):
                 transform_source=js_to_json)
 
             playlist = config['playlist']
+            video_url = next(
+                p['url'] for p in playlist
+                if p.get('eventCategory') == 'Video')
             formats.append({
-                'url': playlist[1]['url'],
+                'url': video_url,
                 'format_id': name,
                 'quality': quality,
             })