diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 74b6f1197..fec39da8b 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -2207,7 +2207,7 @@ class InfoExtractor(object):
         url = re.sub(r'/(?:manifest|playlist|jwplayer)\.(?:m3u8|f4m|mpd|smil)', '', url)
         url_base = self._search_regex(
             r'(?:(?:https?|rtmp|rtsp):)?(//[^?]+)', url, 'format url')
-        http_base_url = self._proto_relative_url(url_base, scheme='http:')
+        http_base_url = '%s:%s' % ('http', url_base)
         formats = []
         if 'm3u8' not in skip_protocols:
             formats.extend(self._extract_m3u8_formats(
@@ -2241,7 +2241,7 @@ class InfoExtractor(object):
             for protocol in ('rtmp', 'rtsp'):
                 if protocol not in skip_protocols:
                     formats.append({
-                        'url': protocol + url_base,
+                        'url': '%s:%s' % (protocol, url_base),
                         'format_id': protocol,
                         'protocol': protocol,
                     })