[twitcasting] Add support for private videos (#20843)

youtube_dl/extractor/twitcasting.py

@@ -2,13 +2,14 @@
 from __future__ import unicode_literals
 
 from .common import InfoExtractor
+from ..utils import urlencode_postdata
 
 import re
 
 
 class TwitCastingIE(InfoExtractor):
     _VALID_URL = r'https?://(?:[^/]+\.)?twitcasting\.tv/(?P<uploader_id>[^/]+)/movie/(?P<id>\d+)'
-    _TEST = {
+    _TESTS = [{
         'url': 'https://twitcasting.tv/ivetesangalo/movie/2357609',
         'md5': '745243cad58c4681dc752490f7540d7f',
         'info_dict': {
@@ -22,14 +23,34 @@ class TwitCastingIE(InfoExtractor):
         'params': {
             'skip_download': True,
         },
-    }
+    }, {
+        'url': 'https://twitcasting.tv/mttbernardini/movie/3689740',
+        'info_dict': {
+            'id': '3689740',
+            'ext': 'mp4',
+            'title': 'Live playing something #3689740',
+            'uploader_id': 'mttbernardini',
+            'description': "I'm live on TwitCasting from my iPad. password: abc (Santa Marinella/Lazio, Italia)",
+            'thumbnail': r're:^https?://.*\.jpg$',
+        },
+        'params': {
+            'skip_download': True,
+            'videopassword': 'abc',
+        },
+    }]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
         video_id = mobj.group('id')
         uploader_id = mobj.group('uploader_id')
 
-        webpage = self._download_webpage(url, video_id)
+        video_password = self._downloader.params.get('videopassword')
+        request_data = None
+        if video_password:
+            request_data = urlencode_postdata({
+                'password': video_password,
+            })
+        webpage = self._download_webpage(url, video_id, data=request_data)
 
         title = self._html_search_regex(
             r'(?s)<[^>]+id=["\']movietitle[^>]+>(.+?)</',