[ukcolumn] Add Extractor

Closes #287

yt_dlp/extractor/ukcolumn.py

@@ -0,0 +1,72 @@
+from __future__ import unicode_literals
+
+from ..utils import (
+    unescapeHTML,
+    urljoin,
+    ExtractorError,
+)
+from .common import InfoExtractor
+from .vimeo import VimeoIE
+from .youtube import YoutubeIE
+
+
+class UkColumnIE(InfoExtractor):
+    IE_NAME = 'ukcolumn'
+    _VALID_URL = r'(?i)https?://(?:www\.)?ukcolumn\.org(/index\.php)?/(?:video|ukcolumn-news)/(?P<id>[-a-z0-9]+)'
+
+    _TESTS = [{
+        'url': 'https://www.ukcolumn.org/ukcolumn-news/uk-column-news-28th-april-2021',
+        'info_dict': {
+            'id': '541632443',
+            'ext': 'mp4',
+            'title': 'UK Column News - 28th April 2021',
+            'uploader_id': 'ukcolumn',
+            'uploader': 'UK Column',
+        },
+        'add_ie': [VimeoIE.ie_key()],
+        'expected_warnings': ['Unable to download JSON metadata'],
+        'params': {
+            'skip_download': 'Handled by Vimeo',
+        },
+    }, {
+        'url': 'https://www.ukcolumn.org/video/insight-eu-military-unification',
+        'info_dict': {
+            'id': 'Fzbnb9t7XAw',
+            'ext': 'mp4',
+            'title': 'Insight: EU Military Unification',
+            'uploader_id': 'ukcolumn',
+            'description': 'md5:29a207965271af89baa0bc191f5de576',
+            'uploader': 'UK Column',
+            'upload_date': '20170514',
+        },
+        'add_ie': [YoutubeIE.ie_key()],
+        'params': {
+            'skip_download': 'Handled by Youtube',
+        },
+    }, {
+        'url': 'https://www.ukcolumn.org/index.php/ukcolumn-news/uk-column-news-30th-april-2021',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        display_id = self._match_id(url)
+        webpage = self._download_webpage(url, display_id)
+
+        oembed_url = urljoin(url, unescapeHTML(self._search_regex(
+            r'<iframe[^>]+src=(["\'])(?P<url>/media/oembed\?url=.+?)\1',
+            webpage, 'OEmbed URL', group='url')))
+        oembed_webpage = self._download_webpage(
+            oembed_url, display_id, note='Downloading OEmbed page')
+
+        ie, video_url = YoutubeIE, YoutubeIE._extract_url(oembed_webpage)
+        if not video_url:
+            ie, video_url = VimeoIE, VimeoIE._extract_url(url, oembed_webpage)
+        if not video_url:
+            raise ExtractorError('No embedded video found')
+
+        return {
+            '_type': 'url_transparent',
+            'title': self._og_search_title(webpage),
+            'url': video_url,
+            'ie_key': ie.ie_key(),
+        }