[screencastomatic] Add new extractor (Fixes #4497)

youtube_dl/extractor/__init__.py

@@ -342,6 +342,7 @@ from .savefrom import SaveFromIE
 from .sbs import SBSIE
 from .scivee import SciVeeIE
 from .screencast import ScreencastIE
+from .screencastomatic import ScreencastOMaticIE
 from .screenwavemedia import CinemassacreIE, ScreenwaveMediaIE, TeamFourIE
 from .servingsys import ServingSysIE
 from .sexu import SexuIE

youtube_dl/extractor/screencastomatic.py

@@ -0,0 +1,50 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+from ..compat import compat_urlparse
+from ..utils import (
+    ExtractorError,
+    js_to_json,
+)
+
+
+class ScreencastOMaticIE(InfoExtractor):
+    _VALID_URL = r'https?://screencast-o-matic\.com/watch/(?P<id>[0-9a-zA-Z]+)'
+    _TEST = {
+        'url': 'http://screencast-o-matic.com/watch/c2lD3BeOPl',
+        'md5': '483583cb80d92588f15ccbedd90f0c18',
+        'info_dict': {
+            'id': 'c2lD3BeOPl',
+            'ext': 'mp4',
+            'title': 'Welcome to 3-4 Philosophy @ DECV!',
+            'thumbnail': 're:^https?://.*\.jpg$',
+            'description': 'as the title says! also: some general info re 1) VCE philosophy and 2) distance learning.',
+        }
+    }
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        webpage = self._download_webpage(url, video_id)
+
+        setup_js = self._search_regex(
+            r"(?s)jwplayer\('mp4Player'\).setup\((\{.*?\})\);",
+            webpage, 'setup code')
+        data = self._parse_json(setup_js, video_id, transform_source=js_to_json)
+        modes = data['modes']
+        try:
+            video_data = next(
+                m for m in data['modes'] if m.get('type') == 'html5')
+        except StopIteration:
+            raise ExtractorError('Could not find any video entries!')
+        video_url = compat_urlparse.urljoin(url, video_data['config']['file'])
+        thumbnail = data.get('image')
+
+        return {
+            'id': video_id,
+            'title': self._og_search_title(webpage),
+            'description': self._og_search_description(webpage),
+            'url': video_url,
+            'ext': 'mp4',
+            'thumbnail': thumbnail,
+        }