Fix parsing of HTML5 media elements

This fixes an error in _parse_html5_media_entries in case
an audio or video tag directly uses a src attribute insted
of <source> elements in it's body.

youtube_dl/extractor/common.py

@@ -1749,7 +1749,7 @@ class InfoExtractor(object):
             media_attributes = extract_attributes(media_tag)
             src = media_attributes.get('src')
             if src:
-                _, formats = _media_formats(src)
+                _, formats = _media_formats(src, media_type)
                 media_info['formats'].extend(formats)
             media_info['thumbnail'] = media_attributes.get('poster')
             if media_content: