+ # https://docs.microsoft.com/en-us/azure/media-services/previous/media-services-content-protection-overview#streaming-urls
+ encryption = self._search_regex(
+ r'encryption%3D(c(?:enc|bc(?:s-aapl)?))',
+ m3u8_url, 'encryption', default=None)
+ if encryption and encryption in ('cenc', 'cbcs-aapl'):
+ raise ExtractorError('This video is DRM protected.', expected=True)