Add support for Howcast.com - closes #835

test/tests.json

@@ -441,5 +441,15 @@
         "title": "Obama Celebrates Iraq Victory"
     },
     "skip": "Requires rtmpdump"
+  },
+  {
+    "name": "Howcast",
+    "url": "http://www.howcast.com/videos/390161-How-to-Tie-a-Square-Knot-Properly",
+    "file": "390161.mp4",
+    "md5": "1d7ba54e2c9d7dc6935ef39e00529138",
+    "info_dict":{
+      "title":"How to Tie a Square Knot Properly",
+      "description":"The square knot, also known as the reef knot, is one of the oldest, most basic knots to tie, and can be used in many different ways. Here's the proper way to tie a square knot."
+    }
   }
 ]

youtube_dl/InfoExtractors.py

@@ -4041,7 +4041,7 @@ class RedTubeIE(InfoExtractor):
         
 class InaIE(InfoExtractor):
     """Information Extractor for Ina.fr"""
-    _VALID_URL = r'(?:http://)?(?:www.)?ina\.fr/video/(?P<id>I[0-9]+)/.*'
+    _VALID_URL = r'(?:http://)?(?:www\.)?ina\.fr/video/(?P<id>I[0-9]+)/.*'
 
     def _real_extract(self,url):
         mobj = re.match(self._VALID_URL, url)
@@ -4068,6 +4068,42 @@ class InaIE(InfoExtractor):
             'title':    video_title,
         }]
 
+class HowcastIE(InfoExtractor):
+    """Information Extractor for Ina.fr"""
+    _VALID_URL = r'(?:https?://)?(?:www\.)?howcast\.com/videos/(?P<id>[\d]+)'
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+
+        video_id = mobj.group('id')
+        webpage_url = 'http://www.howcast.com/videos/' + video_id
+        webpage = self._download_webpage(webpage_url, video_id)
+
+        mobj = re.search(r'\'file\': "(http://mobile-media\.howcast\.com/\d+\.mp4)"', webpage)
+        if mobj is None:
+            raise ExtractorError(u'Unable to extract video URL')
+        video_url = mobj.group(1)
+
+        mobj = re.search(r'<meta content=(?:"([^"]+)"|\'([^\']+)\') property=\'og:title\'', webpage)
+        if mobj is None:
+            raise ExtractorError(u'Unable to extract title')
+        video_title = mobj.group(1) or mobj.group(2)
+
+        mobj = re.search(r'<meta content=(?:"([^"]+)"|\'([^\']+)\') name=\'description\'', webpage)
+        if mobj is None:
+            self._downloader.report_warning(u'unable to extract description')
+            video_description = None
+        else:
+            video_description = mobj.group(1) or mobj.group(2)
+
+        return [{
+            'id':       video_id,
+            'url':      video_url,
+            'ext':      'mp4',
+            'title':    video_title,
+            'description': video_description,
+        }]
+
 def gen_extractors():
     """ Return a list of an instance of every supported extractor.
     The order does matter; the first extractor matched is the one handling the URL.
@@ -4125,6 +4161,7 @@ def gen_extractors():
         BandcampIE(),
         RedTubeIE(),
         InaIE(),
+        HowcastIE(),
         GenericIE()
     ]