[nbc] Add an extractor for the main nbc.com site

Some of the videos are encrypted, the f4m downloader doesn’t support them.

youtube_dl/extractor/__init__.py

@@ -152,7 +152,10 @@ from .myspass import MySpassIE
 from .myvideo import MyVideoIE
 from .naver import NaverIE
 from .nba import NBAIE
-from .nbc import NBCNewsIE
+from .nbc import (
+    NBCIE,
+    NBCNewsIE,
+)
 from .ndr import NDRIE
 from .ndtv import NDTVIE
 from .newgrounds import NewgroundsIE

youtube_dl/extractor/nbc.py

@@ -6,6 +6,30 @@ from .common import InfoExtractor
 from ..utils import find_xpath_attr, compat_str
 
 
+class NBCIE(InfoExtractor):
+    _VALID_URL = r'http://www\.nbc\.com/[^/]+/video/[^/]+/(?P<id>n?\d+)'
+
+    _TEST = {
+        'url': 'http://www.nbc.com/chicago-fire/video/i-am-a-firefighter/2734188',
+        'md5': '54d0fbc33e0b853a65d7b4de5c06d64e',
+        'info_dict': {
+            'id': 'u1RInQZRN7QJ',
+            'ext': 'flv',
+            'title': 'I Am a Firefighter',
+            'description': 'An emergency puts Dawson\'sf irefighter skills to the ultimate test in this four-part digital series.',
+        },
+    }
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        video_id = mobj.group('id')
+        webpage = self._download_webpage(url, video_id)
+        theplatform_url = self._search_regex('class="video-player video-player-full" data-mpx-url="(.*?)"', webpage, 'theplatform url')
+        if theplatform_url.startswith('//'):
+            theplatform_url = 'http:' + theplatform_url
+        return self.url_result(theplatform_url)
+
+
 class NBCNewsIE(InfoExtractor):
     _VALID_URL = r'https?://www\.nbcnews\.com/video/.+?/(?P<id>\d+)'
 

youtube_dl/extractor/theplatform.py

@@ -13,7 +13,7 @@ _x = lambda p: xpath_with_ns(p, {'smil': 'http://www.w3.org/2005/SMIL21/Language
 class ThePlatformIE(InfoExtractor):
     _VALID_URL = r'''(?x)
         (?:https?://(?:link|player)\.theplatform\.com/[sp]/[^/]+/
-           (?P<config>[^/\?]+/(?:swf|config)/select/)?
+           (?P<config>(?:[^/\?]+/(?:swf|config)|onsite)/select/)?
          |theplatform:)(?P<id>[^/\?&]+)'''
 
     _TEST = {
@@ -54,10 +54,15 @@ class ThePlatformIE(InfoExtractor):
 
         f4m_node = body.find(_x('smil:seq/smil:video'))
         if f4m_node is not None:
+            f4m_url = f4m_node.attrib['src']
+            if 'manifest.f4m?' not in f4m_url:
+                f4m_url += '?'
+            # the parameters are from syfy.com, other sites may use others,
+            # they also work for nbc.com
+            f4m_url += '&g=UXWGVKRWHFSP&hdcore=3.0.3'
             formats = [{
                 'ext': 'flv',
-                # the parameters are from syfy.com, other sites may use others
-                'url': f4m_node.attrib['src'] + '?g=UXWGVKRWHFSP&hdcore=3.0.3',
+                'url': f4m_url,
             }]
         else:
             base_url = head.find(_x('smil:meta')).attrib['base']
@@ -95,9 +100,10 @@ class ThePlatformIE(InfoExtractor):
         if mobj.group('config'):
             config_url = url+ '&form=json'
             config_url = config_url.replace('swf/', 'config/')
+            config_url = config_url.replace('onsite/', 'onsite/config/')
             config_json = self._download_webpage(config_url, video_id, u'Downloading config')
             config = json.loads(config_json)
-            smil_url = config['releaseUrl'] + '&format=SMIL&formats=MPEG4'
+            smil_url = config['releaseUrl'] + '&format=SMIL&formats=MPEG4&manifest=f4m'
         else:
             smil_url = ('http://link.theplatform.com/s/dJ5BDC/{0}/meta.smil?'
                 'format=smil&mbr=true'.format(video_id))