[mtv,cc,cmt,spike] Improve and refactor

- Eliminate _transform_rtmp_url
* Generalize triforce mgid extraction
+ [cmt] Add support for full-episodes (closes #11623)

youtube_dl/extractor/comedycentral.py

@@ -48,17 +48,8 @@ class ComedyCentralFullEpisodesIE(MTVServicesInfoExtractor):
     def _real_extract(self, url):
         playlist_id = self._match_id(url)
         webpage = self._download_webpage(url, playlist_id)
-
-        feed_json = self._search_regex(r'var triforceManifestFeed\s*=\s*(\{.+?\});\n', webpage, 'triforce feeed')
-        feed = self._parse_json(feed_json, playlist_id)
-        zones = feed['manifest']['zones']
-
-        video_zone = zones['t2_lc_promo1']
-        feed = self._download_json(video_zone['feed'], playlist_id)
-        mgid = feed['result']['data']['id']
-
+        mgid = self._extract_triforce_mgid(webpage, data_zone='t2_lc_promo1')
         videos_info = self._get_videos_info(mgid)
-
         return videos_info
 
 
@@ -94,12 +85,6 @@ class ToshIE(MTVServicesInfoExtractor):
         'only_matching': True,
     }]
 
-    @classmethod
-    def _transform_rtmp_url(cls, rtmp_video_url):
-        new_urls = super(ToshIE, cls)._transform_rtmp_url(rtmp_video_url)
-        new_urls['rtmp'] = rtmp_video_url.replace('viacomccstrm', 'viacommtvstrm')
-        return new_urls
-
 
 class ComedyCentralTVIE(MTVServicesInfoExtractor):
     _VALID_URL = r'https?://(?:www\.)?comedycentral\.tv/(?:staffeln|shows)/(?P<id>[^/?#&]+)'