1 files changed, 40 insertions, 0 deletions
diff --git a/yt_dlp/extractor/once.py b/yt_dlp/extractor/once.py
new file mode 100644
index 0000000..989f10a
--- /dev/null
+++ b/yt_dlp/extractor/once.py
@@ -0,0 +1,40 @@
+import re
+
+from .common import InfoExtractor
+
+
+class OnceIE(InfoExtractor):  # XXX: Conventionally, base classes should end with BaseIE/InfoExtractor
+    _VALID_URL = r'https?://.+?\.unicornmedia\.com/now/(?:ads/vmap/)?[^/]+/[^/]+/(?P<domain_id>[^/]+)/(?P<application_id>[^/]+)/(?:[^/]+/)?(?P<media_item_id>[^/]+)/content\.(?:once|m3u8|mp4)'
+    ADAPTIVE_URL_TEMPLATE = 'http://once.unicornmedia.com/now/master/playlist/%s/%s/%s/content.m3u8'
+    PROGRESSIVE_URL_TEMPLATE = 'http://once.unicornmedia.com/now/media/progressive/%s/%s/%s/%s/content.mp4'
+
+    def _extract_once_formats(self, url, http_formats_preference=None):
+        domain_id, application_id, media_item_id = re.match(
+            OnceIE._VALID_URL, url).groups()
+        formats = self._extract_m3u8_formats(
+            self.ADAPTIVE_URL_TEMPLATE % (
+                domain_id, application_id, media_item_id),
+            media_item_id, 'mp4', m3u8_id='hls', fatal=False)
+        progressive_formats = []
+        for adaptive_format in formats:
+            # Prevent advertisement from embedding into m3u8 playlist (see
+            # https://github.com/ytdl-org/youtube-dl/issues/8893#issuecomment-199912684)
+            adaptive_format['url'] = re.sub(
+                r'\badsegmentlength=\d+', r'adsegmentlength=0', adaptive_format['url'])
+            rendition_id = self._search_regex(
+                r'/now/media/playlist/[^/]+/[^/]+/([^/]+)',
+                adaptive_format['url'], 'redition id', default=None)
+            if rendition_id:
+                progressive_format = adaptive_format.copy()
+                progressive_format.update({
+                    'url': self.PROGRESSIVE_URL_TEMPLATE % (
+                        domain_id, application_id, rendition_id, media_item_id),
+                    'format_id': adaptive_format['format_id'].replace(
+                        'hls', 'http'),
+                    'protocol': 'http',
+                    'preference': http_formats_preference,
+                })
+                progressive_formats.append(progressive_format)
+        self._check_formats(progressive_formats, media_item_id)
+        formats.extend(progressive_formats)
+        return formats