diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 6646fe348a..84acaa5dc6 100644
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -743,7 +743,7 @@ class YoutubeDL(object):
                 )
             # Automatically determine file extension if missing
             if 'ext' not in format:
-                format['ext'] = determine_ext(format['url'])
+                format['ext'] = determine_ext(format['url']).lower()
 
         format_limit = self.params.get('format_limit', None)
         if format_limit:
diff --git a/youtube_dl/extractor/__init__.py b/youtube_dl/extractor/__init__.py
index e2e66c5260..7c3587e472 100644
--- a/youtube_dl/extractor/__init__.py
+++ b/youtube_dl/extractor/__init__.py
@@ -83,6 +83,7 @@ from .fktv import (
 )
 from .flickr import FlickrIE
 from .fourtube import FourTubeIE
+from .franceculture import FranceCultureIE
 from .franceinter import FranceInterIE
 from .francetv import (
     PluzzIE,
diff --git a/youtube_dl/extractor/franceculture.py b/youtube_dl/extractor/franceculture.py
new file mode 100644
index 0000000000..898e0dda78
--- /dev/null
+++ b/youtube_dl/extractor/franceculture.py
@@ -0,0 +1,77 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import json
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+    compat_parse_qs,
+    compat_urlparse,
+)
+
+
+class FranceCultureIE(InfoExtractor):
+    _VALID_URL = r'(?P<baseurl>http://(?:www\.)?franceculture\.fr/)player/reecouter\?play=(?P<id>[0-9]+)'
+    _TEST = {
+        'url': 'http://www.franceculture.fr/player/reecouter?play=4795174',
+        'info_dict': {
+            'id': '4795174',
+            'ext': 'mp3',
+            'title': 'Rendez-vous au pays des geeks',
+            'vcodec': 'none',
+            'uploader': 'Colette Fellous',
+            'upload_date': '20140301',
+            'duration': 3601,
+            'thumbnail': r're:^http://www\.franceculture\.fr/.*/images/player/Carnet-nomade\.jpg$',
+            'description': 'Avec :Jean-Baptiste Péretié pour son documentaire sur Arte "La revanche des « geeks », une enquête menée aux Etats-Unis dans la S ...',
+        }
+    }
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        video_id = mobj.group('id')
+        baseurl = mobj.group('baseurl')
+
+        webpage = self._download_webpage(url, video_id)
+        params_code = self._search_regex(
+            r"<param name='movie' value='/sites/all/modules/rf/rf_player/swf/loader.swf\?([^']+)' />",
+            webpage, 'parameter code')
+        params = compat_parse_qs(params_code)
+        video_url = compat_urlparse.urljoin(baseurl, params['urlAOD'][0])
+
+        title = self._html_search_regex(
+            r'<h1 class="title[^"]+">(.+?)</h1>', webpage, 'title')
+        uploader = self._html_search_regex(
+            r'(?s)<div id="emission".*?<span class="author">(.*?)</span>',
+            webpage, 'uploader', fatal=False)
+        thumbnail_part = self._html_search_regex(
+            r'(?s)<div id="emission".*?<img src="([^"]+)"', webpage,
+            'thumbnail', fatal=False)
+        if thumbnail_part is None:
+            thumbnail = None
+        else:
+            thumbnail = compat_urlparse.urljoin(baseurl, thumbnail_part)
+        description = self._html_search_regex(
+            r'(?s)<p class="desc">(.*?)</p>', webpage, 'description')
+
+        info = json.loads(params['infoData'][0])[0]
+        duration = info.get('media_length')
+        upload_date_candidate = info.get('media_section5')
+        upload_date = (
+            upload_date_candidate
+            if (upload_date_candidate is not None and
+                re.match(r'[0-9]{8}$', upload_date_candidate))
+            else None)
+
+        return {
+            'id': video_id,
+            'url': video_url,
+            'vcodec': 'none' if video_url.lower().endswith('.mp3') else None,
+            'duration': duration,
+            'uploader': uploader,
+            'upload_date': upload_date,
+            'title': title,
+            'thumbnail': thumbnail,
+            'description': description,
+        }