Add an extractor for rutube.ru (closes #1136)

It downloads with a m3u8 manifest, requires ffmpeg.

youtube_dl/extractor/__init__.py

@@ -102,6 +102,7 @@
 from .rottentomatoes import RottenTomatoesIE
 from .roxwel import RoxwelIE
 from .rtlnow import RTLnowIE
+from .rutube import RutubeIE
 from .sina import SinaIE
 from .slashdot import SlashdotIE
 from .slideshare import SlideshareIE

youtube_dl/extractor/rutube.py

@@ -0,0 +1,58 @@
+# encoding: utf-8
+import re
+import json
+
+from .common import InfoExtractor
+from ..utils import (
+    compat_urlparse,
+    compat_str,
+    ExtractorError,
+)
+
+
+class RutubeIE(InfoExtractor):
+    _VALID_URL = r'https?://rutube.ru/video/(?P<long_id>\w+)'
+
+    _TEST = {
+        u'url': u'http://rutube.ru/video/3eac3b4561676c17df9132a9a1e62e3e/',
+        u'file': u'3eac3b4561676c17df9132a9a1e62e3e.mp4',
+        u'info_dict': {
+            u'title': u'Раненный кенгуру забежал в аптеку',
+            u'uploader': u'NTDRussian',
+            u'uploader_id': u'29790',
+        },
+        u'params': {
+            # It requires ffmpeg (m3u8 download)
+            u'skip_download': True,
+        },
+    }
+
+    def _get_api_response(self, short_id, subpath):
+        api_url = 'http://rutube.ru/api/play/%s/%s/?format=json' % (subpath, short_id)
+        response_json = self._download_webpage(api_url, short_id,
+            u'Downloading %s json' % subpath)
+        return json.loads(response_json)
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        long_id = mobj.group('long_id')
+        webpage = self._download_webpage(url, long_id)
+        og_video = self._og_search_video_url(webpage)
+        short_id = compat_urlparse.urlparse(og_video).path[1:]
+        options = self._get_api_response(short_id, 'options')
+        trackinfo = self._get_api_response(short_id, 'trackinfo')
+        # Some videos don't have the author field
+        author = trackinfo.get('author') or {}
+        m3u8_url = trackinfo['video_balancer'].get('m3u8')
+        if m3u8_url is None:
+            raise ExtractorError(u'Couldn\'t find m3u8 manifest url')
+
+        return {
+            'id': trackinfo['id'],
+            'title': trackinfo['title'],
+            'url': m3u8_url,
+            'ext': 'mp4',
+            'thumbnail': options['thumbnail_url'],
+            'uploader': author.get('name'),
+            'uploader_id': compat_str(author['id']) if author else None,
+        }