[dispeak] Add new extractor

Both GDCVault and GPUTechConf uses the service of DigitalSpeaking.

youtube_dl/extractor/gdcvault.py

@@ -4,7 +4,6 @@ import re
 
 from .common import InfoExtractor
 from ..utils import (
-    remove_end,
     HEADRequest,
     sanitized_Request,
     urlencode_postdata,
@@ -64,66 +63,6 @@ class GDCVaultIE(InfoExtractor):
         },
     ]
 
-    def _parse_mp4(self, xml_description):
-        video_formats = []
-        video_root = None
-
-        mp4_video = xml_description.find('./metadata/mp4video')
-        if mp4_video is not None:
-            mobj = re.match(r'(?P<root>https?://.*?/).*', mp4_video.text)
-            video_root = mobj.group('root')
-        if video_root is None:
-            # Hard-coded in http://evt.dispeak.com/ubm/gdc/sf16/custom/player2.js
-            video_root = 'http://s3-2u.digitallyspeaking.com/'
-
-        formats = xml_description.findall('./metadata/MBRVideos/MBRVideo')
-        if not formats:
-            return None
-        for format in formats:
-            mobj = re.match(r'mp4\:(?P<path>.*)', format.find('streamName').text)
-            url = video_root + mobj.group('path')
-            vbr = format.find('bitrate').text
-            video_formats.append({
-                'url': url,
-                'vbr': int(vbr),
-            })
-        return video_formats
-
-    def _parse_flv(self, xml_description):
-        formats = []
-        akamai_url = xml_description.find('./metadata/akamaiHost').text
-        audios = xml_description.find('./metadata/audios')
-        if audios is not None:
-            for audio in audios:
-                formats.append({
-                    'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
-                    'play_path': remove_end(audio.get('url'), '.flv'),
-                    'ext': 'flv',
-                    'vcodec': 'none',
-                    'format_id': audio.get('code'),
-                })
-        slide_video_path = xml_description.find('./metadata/slideVideo').text
-        formats.append({
-            'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
-            'play_path': remove_end(slide_video_path, '.flv'),
-            'ext': 'flv',
-            'format_note': 'slide deck video',
-            'quality': -2,
-            'preference': -2,
-            'format_id': 'slides',
-        })
-        speaker_video_path = xml_description.find('./metadata/speakerVideo').text
-        formats.append({
-            'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
-            'play_path': remove_end(speaker_video_path, '.flv'),
-            'ext': 'flv',
-            'format_note': 'speaker video',
-            'quality': -1,
-            'preference': -1,
-            'format_id': 'speaker',
-        })
-        return formats
-
     def _login(self, webpage_url, display_id):
         (username, password) = self._get_login_info()
         if username is None or password is None:
@@ -199,17 +138,10 @@ class GDCVaultIE(InfoExtractor):
                 r'<iframe src=".*?\?xmlURL=xml/(?P<xml_file>.+?\.xml).*?".*?</iframe>',
                 start_page, 'xml filename')
 
-        xml_description = self._download_xml(
-            '%s/xml/%s' % (xml_root, xml_name), display_id)
-
-        video_title = xml_description.find('./metadata/title').text
-        video_formats = self._parse_mp4(xml_description)
-        if video_formats is None:
-            video_formats = self._parse_flv(xml_description)
-
         return {
+            '_type': 'url_transparent',
             'id': video_id,
             'display_id': display_id,
-            'title': video_title,
-            'formats': video_formats,
+            'url': '%s/xml/%s' % (xml_root, xml_name),
+            'ie': 'DigitalSpeaking',
         }