[mediasite] Add extractor, subsume sandia and collegerama extractors

1 files changed, 184 insertions, 0 deletions

diff --git a/youtube_dl/extractor/mediasite.py b/youtube_dl/extractor/mediasite.py
new file mode 100644
index 000000000..5d281684e
--- /dev/null
+++ b/youtube_dl/extractor/mediasite.py
@@ -0,0 +1,184 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import re
+import json
+
+from .common import InfoExtractor
+from ..compat import compat_urlparse
+from ..utils import (
+    ExtractorError,
+    unsmuggle_url,
+    mimetype2ext,
+    float_or_none,
+)
+
+
+class MediasiteIE(InfoExtractor):
+    _VALID_URL = r'''(?xi)
+        https?://[a-z0-9\-\.:\[\]]+/Mediasite/Play/
+        (?P<id>[0-9a-f]{32,34})
+        (?P<QueryString>\?[^#]+|)
+    '''
+    _TESTS = [
+        {
+            'url': 'https://hitsmediaweb.h-its.org/mediasite/Play/2db6c271681e4f199af3c60d1f82869b1d',
+            'info_dict': {
+                'id': '2db6c271681e4f199af3c60d1f82869b1d',
+                'ext': 'mp4',
+                'title': 'Lecture: Tuesday, September 20, 2016 - Sir Andrew Wiles',
+                'description': 'Sir Andrew Wiles: “Equations in arithmetic”\\n\\nI will describe some of the interactions between modern number theory and the problem of solving equations in rational numbers or integers\\u0027.',
+                'timestamp': 1474268400.0,
+                'upload_date': '20160919',
+            },
+        },
+        {
+            'url': 'http://mediasite.uib.no/Mediasite/Play/90bb363295d945d6b548c867d01181361d?catalog=a452b7df-9ae1-46b7-a3ba-aceeb285f3eb',
+            'info_dict': {
+                'id': '90bb363295d945d6b548c867d01181361d',
+                'ext': 'mp4',
+                'upload_date': '20150429',
+                'title': '5) IT-forum 2015-Dag 1  - Dungbeetle -  How and why Rain created a tiny bug tracker for Unity',
+                'timestamp': 1430311380.0,
+            },
+        },
+        {
+            'url': 'https://collegerama.tudelft.nl/Mediasite/Play/585a43626e544bdd97aeb71a0ec907a01d',
+            'md5': '481fda1c11f67588c0d9d8fbdced4e39',
+            'info_dict': {
+                'id': '585a43626e544bdd97aeb71a0ec907a01d',
+                'ext': 'mp4',
+                'title': 'Een nieuwe wereld: waarden, bewustzijn en techniek van de mensheid 2.0.',
+                'description': '',
+                'thumbnail': r're:^https?://.*\.jpg(?:\?.*)?$',
+                'duration': 7713.088,
+                'timestamp': 1413309600,
+                'upload_date': '20141014',
+            },
+        },
+        {
+            'url': 'https://collegerama.tudelft.nl/Mediasite/Play/86a9ea9f53e149079fbdb4202b521ed21d?catalog=fd32fd35-6c99-466c-89d4-cd3c431bc8a4',
+            'md5': 'ef1fdded95bdf19b12c5999949419c92',
+            'info_dict': {
+                'id': '86a9ea9f53e149079fbdb4202b521ed21d',
+                'ext': 'wmv',
+                'title': '64ste Vakantiecursus: Afvalwater',
+                'description': 'md5:7fd774865cc69d972f542b157c328305',
+                'thumbnail': r're:^https?://.*\.jpg(?:\?.*?)?$',
+                'duration': 10853,
+                'timestamp': 1326446400,
+                'upload_date': '20120113',
+            },
+        },
+        {
+            'url': 'http://digitalops.sandia.gov/Mediasite/Play/24aace4429fc450fb5b38cdbf424a66e1d',
+            'md5': '9422edc9b9a60151727e4b6d8bef393d',
+            'info_dict': {
+                'id': '24aace4429fc450fb5b38cdbf424a66e1d',
+                'ext': 'mp4',
+                'title': 'Xyce Software Training - Section 1',
+                'description': r're:(?s)SAND Number: SAND 2013-7800.{200,}',
+                'upload_date': '20120409',
+                'timestamp': 1333983600,
+                'duration': 7794,
+            }
+        }
+    ]
+
+    # look in Mediasite.Core.js (Mediasite.ContentStreamType[*])
+    _STREAM_TYPES = {
+        0: 'video1', # the main video
+        2: 'slide',
+        3: 'presentation',
+        4: 'video2', # screencast?
+        5: 'video3',
+    }
+
+    def _real_extract(self, url):
+        url, data = unsmuggle_url(url, {})
+        mobj = re.match(self._VALID_URL, url)
+        ResourceId = mobj.group('id')
+        QueryString = mobj.group('QueryString')
+
+        webpage = self._download_webpage(url, ResourceId) # XXX: add UrlReferrer?
+
+        # XXX: might have also extracted UrlReferrer and QueryString from the html
+        ServicePath = compat_urlparse.urljoin(url, self._html_search_regex(
+            r'<div id="ServicePath">(.+?)</div>', webpage, ResourceId,
+            default='/Mediasite/PlayerService/PlayerService.svc/json'))
+
+        PlayerOptions = self._download_json(
+            '%s/GetPlayerOptions' % (ServicePath), ResourceId,
+            headers={
+                'Content-type': 'application/json; charset=utf-8',
+                'X-Requested-With': 'XMLHttpRequest',
+            },
+            data=json.dumps({
+                'getPlayerOptionsRequest': {
+                    'ResourceId': ResourceId,
+                    'QueryString': QueryString,
+                    'UrlReferrer': data.get('UrlReferrer', ''),
+                    'UseScreenReader': False,
+                }
+            }).encode('utf-8'))
+        Presentation = PlayerOptions['d']['Presentation']
+        if Presentation is None:
+            raise ExtractorError('Mediasite says: %s' %
+                (PlayerOptions['d']['PlayerPresentationStatusMessage'],),
+                expected=True)
+
+        thumbnails = []
+        formats = []
+        for snum, Stream in enumerate(Presentation['Streams']):
+            stream_type = self._STREAM_TYPES.get(
+                Stream['StreamType'], 'type%u' % Stream['StreamType'])
+
+            stream_formats = []
+            for unum, VideoUrl in enumerate(Stream['VideoUrls']):
+                url = VideoUrl['Location']
+                # XXX: if Stream.get('CanChangeScheme', False), switch scheme to HTTP/HTTPS
+
+                if VideoUrl['MediaType'] == 'SS':
+                    stream_formats.extend(self._extract_ism_formats(
+                        url, ResourceId, ism_id='%s-%u.%u' % (stream_type, snum, unum)))
+                    continue
+
+                stream_formats.append({
+                    'format_id': '%s-%u.%u' % (stream_type, snum, unum),
+                    'url': url,
+                    'ext': mimetype2ext(VideoUrl['MimeType']),
+                })
+
+            # TODO: if Stream['HasSlideContent']:
+            # synthesise an MJPEG video stream '%s-%u.slides' % (stream_type, snum)
+            # from Stream['Slides']
+            # this will require writing a custom downloader...
+
+            # disprefer 'secondary' streams
+            if Stream['StreamType'] != 0:
+                for fmt in stream_formats:
+                    fmt['preference'] = -1
+
+            ThumbnailUrl = Stream.get('ThumbnailUrl')
+            if ThumbnailUrl:
+                thumbnails.append({
+                    'id': '%s-%u' % (stream_type, snum),
+                    'url': compat_urlparse.urljoin(url, ThumbnailUrl),
+                    'preference': -1 if Stream['StreamType'] != 0 else 0,
+                })
+            formats.extend(stream_formats)
+
+        self._sort_formats(formats)
+
+        # XXX: Presentation['Presenters']
+        # XXX: Presentation['Transcript']
+
+        return {
+            'id': ResourceId,
+            'title': Presentation['Title'],
+            'description': Presentation.get('Description'),
+            'duration': float_or_none(Presentation.get('Duration'), 1000),
+            'timestamp': float_or_none(Presentation.get('UnixTime'), 1000),
+            'formats': formats,
+            'thumbnails': thumbnails,
+        }