diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index 0baed6b27..e5f18a75d 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -553,6 +553,10 @@ from .lcp import (
 )
 from .learnr import LearnrIE
 from .lecture2go import Lecture2GoIE
+from .lecturio import (
+    LecturioIE,
+    LecturioCourseIE,
+)
 from .leeco import (
     LeIE,
     LePlaylistIE,
diff --git a/youtube_dl/extractor/lecturio.py b/youtube_dl/extractor/lecturio.py
new file mode 100644
index 000000000..62ff28e02
--- /dev/null
+++ b/youtube_dl/extractor/lecturio.py
@@ -0,0 +1,186 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+from ..compat import compat_str
+from ..utils import (
+    determine_ext,
+    extract_attributes,
+    ExtractorError,
+    float_or_none,
+    int_or_none,
+    str_or_none,
+    url_or_none,
+    urlencode_postdata,
+    urljoin,
+)
+
+
+class LecturioBaseIE(InfoExtractor):
+    _LOGIN_URL = 'https://app.lecturio.com/en/login'
+    _NETRC_MACHINE = 'lecturio'
+
+    def _real_initialize(self):
+        self._login()
+
+    def _login(self):
+        username, password = self._get_login_info()
+        if username is None:
+            return
+
+        # Sets some cookies
+        _, urlh = self._download_webpage_handle(
+            self._LOGIN_URL, None, 'Downloading login popup')
+
+        def is_logged(url_handle):
+            return self._LOGIN_URL not in compat_str(url_handle.geturl())
+
+        # Already logged in
+        if is_logged(urlh):
+            return
+
+        login_form = {
+            'signin[email]': username,
+            'signin[password]': password,
+            'signin[remember]': 'on',
+        }
+
+        response, urlh = self._download_webpage_handle(
+            self._LOGIN_URL, None, 'Logging in',
+            data=urlencode_postdata(login_form))
+
+        # Logged in successfully
+        if is_logged(urlh):
+            return
+
+        errors = self._html_search_regex(
+            r'(?s)<ul[^>]+class=["\']error_list[^>]+>(.+?)</ul>', response,
+            'errors', default=None)
+        if errors:
+            raise ExtractorError('Unable to login: %s' % errors, expected=True)
+        raise ExtractorError('Unable to log in')
+
+
+class LecturioIE(LecturioBaseIE):
+    _VALID_URL = r'https://app\.lecturio\.com/[^/]+/(?P<id>[^/?#&]+)\.lecture'
+    _TEST = {
+        'url': 'https://app.lecturio.com/medical-courses/important-concepts-and-terms-introduction-to-microbiology.lecture#tab/videos',
+        'md5': 'f576a797a5b7a5e4e4bbdfc25a6a6870',
+        'info_dict': {
+            'id': '39634',
+            'ext': 'mp4',
+            'title': 'Important Concepts and Terms – Introduction to Microbiology',
+        },
+        'skip': 'Requires lecturio account credentials',
+    }
+
+    _CC_LANGS = {
+        'German': 'de',
+        'English': 'en',
+        'Spanish': 'es',
+        'French': 'fr',
+        'Polish': 'pl',
+        'Russian': 'ru',
+    }
+
+    def _real_extract(self, url):
+        display_id = self._match_id(url)
+
+        webpage = self._download_webpage(
+            'https://app.lecturio.com/en/lecture/%s/player.html' % display_id,
+            display_id)
+
+        lecture_id = self._search_regex(
+            r'lecture_id\s*=\s*(?:L_)?(\d+)', webpage, 'lecture id')
+
+        api_url = self._search_regex(
+            r'lectureDataLink\s*:\s*(["\'])(?P<url>(?:(?!\1).)+)\1', webpage,
+            'api url', group='url')
+
+        video = self._download_json(api_url, display_id)
+
+        title = video['title'].strip()
+
+        formats = []
+        for format_ in video['content']['media']:
+            if not isinstance(format_, dict):
+                continue
+            file_ = format_.get('file')
+            if not file_:
+                continue
+            ext = determine_ext(file_)
+            if ext == 'smil':
+                # smil contains only broken RTMP formats anyway
+                continue
+            file_url = url_or_none(file_)
+            if not file_url:
+                continue
+            label = str_or_none(format_.get('label'))
+            filesize = int_or_none(format_.get('fileSize'))
+            formats.append({
+                'url': file_url,
+                'format_id': label,
+                'filesize': float_or_none(filesize, invscale=1000)
+            })
+        self._sort_formats(formats)
+
+        subtitles = {}
+        automatic_captions = {}
+        cc = self._parse_json(
+            self._search_regex(
+                r'subtitleUrls\s*:\s*({.+?})\s*,', webpage, 'subtitles',
+                default='{}'), display_id, fatal=False)
+        for cc_label, cc_url in cc.items():
+            cc_url = url_or_none(cc_url)
+            if not cc_url:
+                continue
+            sub_dict = automatic_captions if 'auto-translated' in cc_label else subtitles
+            lang = self._search_regex(
+                r'/([a-z]{2})_', cc_url, 'lang', default=cc_label.split()[0])
+            sub_dict.setdefault(self._CC_LANGS.get(lang, lang), []).append({
+                'url': cc_url,
+            })
+
+        return {
+            'id': lecture_id,
+            'title': title,
+            'formats': formats,
+            'subtitles': subtitles,
+            'automatic_captions': automatic_captions,
+        }
+
+
+class LecturioCourseIE(LecturioBaseIE):
+    _VALID_URL = r'https://app\.lecturio\.com/[^/]+/(?P<id>[^/?#&]+)\.course'
+    _TEST = {
+        'url': 'https://app.lecturio.com/medical-courses/microbiology-introduction.course#/',
+        'info_dict': {
+            'id': 'microbiology-introduction',
+            'title': 'Microbiology: Introduction',
+        },
+        'playlist_count': 45,
+        'skip': 'Requires lecturio account credentials',
+    }
+
+    def _real_extract(self, url):
+        display_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, display_id)
+
+        entries = []
+        for mobj in re.finditer(
+                r'(?s)<[^>]+\bdata-url=(["\'])(?:(?!\1).)+\.lecture\b[^>]+>',
+                webpage):
+            params = extract_attributes(mobj.group(0))
+            lecture_url = urljoin(url, params.get('data-url'))
+            lecture_id = params.get('data-id')
+            entries.append(self.url_result(
+                lecture_url, ie=LecturioIE.ie_key(), video_id=lecture_id))
+
+        title = self._search_regex(
+            r'<span[^>]+class=["\']content-title[^>]+>([^<]+)', webpage,
+            'title', default=None)
+
+        return self.playlist_result(entries, display_id, title)