diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index eef70888d..7023a2036 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -1424,12 +1424,10 @@ class InfoExtractor(object):
         try:
             self._request_webpage(url, video_id, 'Checking %s URL' % item, headers=headers)
             return True
-        except ExtractorError as e:
-            if isinstance(e.cause, compat_urllib_error.URLError):
-                self.to_screen(
-                    '%s: %s URL is invalid, skipping' % (video_id, item))
-                return False
-            raise
+        except ExtractorError:
+            self.to_screen(
+                '%s: %s URL is invalid, skipping' % (video_id, item))
+            return False
 
     def http_scheme(self):
         """ Either "http:" or "https:", depending on the user's preferences """
diff --git a/youtube_dl/extractor/orf.py b/youtube_dl/extractor/orf.py
index 499be0029..3425f7602 100644
--- a/youtube_dl/extractor/orf.py
+++ b/youtube_dl/extractor/orf.py
@@ -86,12 +86,13 @@ class ORFTVthekIE(InfoExtractor):
                     if value:
                         format_id_list.append(value)
                 format_id = '-'.join(format_id_list)
-                if determine_ext(fd['src']) == 'm3u8':
+                ext = determine_ext(src)
+                if ext == 'm3u8':
                     formats.extend(self._extract_m3u8_formats(
-                        fd['src'], video_id, 'mp4', m3u8_id=format_id))
-                elif determine_ext(fd['src']) == 'f4m':
+                        src, video_id, 'mp4', m3u8_id=format_id, fatal=False))
+                elif ext == 'f4m':
                     formats.extend(self._extract_f4m_formats(
-                        fd['src'], video_id, f4m_id=format_id))
+                        src, video_id, f4m_id=format_id, fatal=False))
                 else:
                     formats.append({
                         'format_id': format_id,