diff --git a/youtube_dl/extractor/viidea.py b/youtube_dl/extractor/viidea.py
index ae9a42737..5539b9c02 100644
--- a/youtube_dl/extractor/viidea.py
+++ b/youtube_dl/extractor/viidea.py
@@ -4,11 +4,10 @@ import re
 
 from .common import InfoExtractor
 from ..compat import (
-    compat_HTTPError,
     compat_urlparse,
+    compat_str,
 )
 from ..utils import (
-    ExtractorError,
     parse_duration,
     js_to_json,
     parse_iso8601,
@@ -97,7 +96,7 @@ class ViideaIE(InfoExtractor):
 
         webpage = self._download_webpage(url, lecture_slug)
 
-        cfg = self._parse_json(self._search_regex(r'cfg\s*:\s*({[^}]+})', webpage, 'cfg'), lecture_slug, js_to_json)
+        cfg = self._parse_json(self._search_regex([r'cfg\s*:\s*({.+?}),[\da-zA-Z_]:\(?function', r'cfg\s*:\s*({[^}]+})'], webpage, 'cfg'), lecture_slug, js_to_json)
 
         lecture_id = str(cfg['obj_id'])
 
@@ -116,9 +115,9 @@ class ViideaIE(InfoExtractor):
 
         entries = []
         parts = cfg.get('videos')
-        if parts:
+        if lecture_data.get('type') != 'evt' and parts:
             if len(parts) == 1:
-                part = str(parts[0])
+                part = compat_str(parts[0])
             if part:
                 smil_url = '%s/%s/video/%s/smil.xml' % (base_url, lecture_slug, part)
                 smil = self._download_smil(smil_url, lecture_id)