diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index 8e7a5bf416..e79ffca85e 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -1114,6 +1114,7 @@
 )
 from .teachingchannel import TeachingChannelIE
 from .teamcoco import TeamcocoIE
+from .teamtreehouse import TeamTreeHouseIE
 from .techtalks import TechTalksIE
 from .ted import TEDIE
 from .tele5 import Tele5IE
diff --git a/youtube_dl/extractor/teamtreehouse.py b/youtube_dl/extractor/teamtreehouse.py
new file mode 100644
index 0000000000..d347e97ef6
--- /dev/null
+++ b/youtube_dl/extractor/teamtreehouse.py
@@ -0,0 +1,140 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+    clean_html,
+    determine_ext,
+    ExtractorError,
+    float_or_none,
+    get_element_by_class,
+    get_element_by_id,
+    parse_duration,
+    remove_end,
+    urlencode_postdata,
+    urljoin,
+)
+
+
+class TeamTreeHouseIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?teamtreehouse\.com/library/(?P<id>[^/]+)'
+    _TESTS = [{
+        # Course
+        'url': 'https://teamtreehouse.com/library/introduction-to-user-authentication-in-php',
+        'info_dict': {
+            'id': 'introduction-to-user-authentication-in-php',
+            'title': 'Introduction to User Authentication in PHP',
+            'description': 'md5:405d7b4287a159b27ddf30ca72b5b053',
+        },
+        'playlist_mincount': 24,
+    }, {
+        # WorkShop
+        'url': 'https://teamtreehouse.com/library/deploying-a-react-app',
+        'info_dict': {
+            'id': 'deploying-a-react-app',
+            'title': 'Deploying a React App',
+            'description': 'md5:10a82e3ddff18c14ac13581c9b8e5921',
+        },
+        'playlist_mincount': 4,
+    }, {
+        # Video
+        'url': 'https://teamtreehouse.com/library/application-overview-2',
+        'info_dict': {
+            'id': 'application-overview-2',
+            'ext': 'mp4',
+            'title': 'Application Overview',
+            'description': 'md5:4b0a234385c27140a4378de5f1e15127',
+        },
+        'expected_warnings': ['This is just a preview'],
+    }]
+    _NETRC_MACHINE = 'teamtreehouse'
+
+    def _real_initialize(self):
+        email, password = self._get_login_info()
+        if email is None:
+            return
+
+        signin_page = self._download_webpage(
+            'https://teamtreehouse.com/signin',
+            None, 'Downloading signin page')
+        data = self._form_hidden_inputs('new_user_session', signin_page)
+        data.update({
+            'user_session[email]': email,
+            'user_session[password]': password,
+        })
+        error_message = get_element_by_class('error-message', self._download_webpage(
+            'https://teamtreehouse.com/person_session',
+            None, 'Logging in', data=urlencode_postdata(data)))
+        if error_message:
+            raise ExtractorError(clean_html(error_message), expected=True)
+
+    def _real_extract(self, url):
+        display_id = self._match_id(url)
+        webpage = self._download_webpage(url, display_id)
+        title = self._html_search_meta(['og:title', 'twitter:title'], webpage)
+        description = self._html_search_meta(
+            ['description', 'og:description', 'twitter:description'], webpage)
+        entries = self._parse_html5_media_entries(url, webpage, display_id)
+        if entries:
+            info = entries[0]
+
+            for subtitles in info.get('subtitles', {}).values():
+                for subtitle in subtitles:
+                    subtitle['ext'] = determine_ext(subtitle['url'], 'srt')
+
+            is_preview = 'data-preview="true"' in webpage
+            if is_preview:
+                self.report_warning(
+                    'This is just a preview. You need to be signed in with a Basic account to download the entire video.', display_id)
+                duration = 30
+            else:
+                duration = float_or_none(self._search_regex(
+                    r'data-duration="(\d+)"', webpage, 'duration'), 1000)
+                if not duration:
+                    duration = parse_duration(get_element_by_id(
+                        'video-duration', webpage))
+
+            info.update({
+                'id': display_id,
+                'title': title,
+                'description': description,
+                'duration': duration,
+            })
+            return info
+        else:
+            def extract_urls(html, extract_info=None):
+                for path in re.findall(r'<a[^>]+href="([^"]+)"', html):
+                    page_url = urljoin(url, path)
+                    entry = {
+                        '_type': 'url_transparent',
+                        'id': self._match_id(page_url),
+                        'url': page_url,
+                        'id_key': self.ie_key(),
+                    }
+                    if extract_info:
+                        entry.update(extract_info)
+                    entries.append(entry)
+
+            workshop_videos = self._search_regex(
+                r'(?s)<ul[^>]+id="workshop-videos"[^>]*>(.+?)</ul>',
+                webpage, 'workshop videos', default=None)
+            if workshop_videos:
+                extract_urls(workshop_videos)
+            else:
+                stages_path = self._search_regex(
+                    r'(?s)<div[^>]+id="syllabus-stages"[^>]+data-url="([^"]+)"',
+                    webpage, 'stages path')
+                if stages_path:
+                    stages_page = self._download_webpage(
+                        urljoin(url, stages_path), display_id, 'Downloading stages page')
+                    for chapter_number, (chapter, steps_list) in enumerate(re.findall(r'(?s)<h2[^>]*>\s*(.+?)\s*</h2>.+?<ul[^>]*>(.+?)</ul>', stages_page), 1):
+                        extract_urls(steps_list, {
+                            'chapter': chapter,
+                            'chapter_number': chapter_number,
+                        })
+                    title = remove_end(title, ' Course')
+
+            return self.playlist_result(
+                entries, display_id, title, description)