[tlc.de] If the url contains a fragment, use if in the iframe url (reported in #2748)

The fragment is used in the webpage for selecting different videos.

youtube_dl/extractor/tlc.py

@@ -5,6 +5,7 @@ import re
 from .common import InfoExtractor
 from .brightcove import BrightcoveIE
 from .discovery import DiscoveryIE
+from ..utils import compat_urlparse
 
 
 class TlcIE(DiscoveryIE):
@@ -51,6 +52,10 @@ class TlcDeIE(InfoExtractor):
         # Otherwise we don't get the correct 'BrightcoveExperience' element,
         # example: http://www.tlc.de/sendungen/cake-boss/videos/cake-boss-cannoli-drama/
         iframe_url = iframe_url.replace('.htm?', '.php?')
+        url_fragment = compat_urlparse.urlparse(url).fragment
+        if url_fragment:
+            # Since the fragment is not send to the server, we always get the same iframe
+            iframe_url = re.sub(r'playlist=(\d+)', 'playlist=%s' % url_fragment, iframe_url)
         iframe = self._download_webpage(iframe_url, title)
 
         return {