+    _VALID_URL = r'https?://(?:www\.)?ustream\.tv/(?P<type>recorded|embed|embed/recorded)/(?P<id>\d+)'
+    IE_NAME = 'ustream'
+    _TESTS = [{
+        'url': 'http://www.ustream.tv/recorded/20274954',
+        'md5': '088f151799e8f572f84eb62f17d73e5c',
+        'info_dict': {
+            'id': '20274954',
+            'ext': 'flv',
+            'title': 'Young Americans for Liberty February 7, 2012 2:28 AM',
+            'description': 'Young Americans for Liberty February 7, 2012 2:28 AM',
+            'timestamp': 1328577035,
+            'upload_date': '20120207',
+            'uploader': 'yaliberty',
+            'uploader_id': '6780869',
+        },
+    }, {
+        # From http://sportscanada.tv/canadagames/index.php/week2/figure-skating/444
+        # Title and uploader available only from params JSON
+        'url': 'http://www.ustream.tv/embed/recorded/59307601?ub=ff0000&lc=ff0000&oc=ffffff&uc=ffffff&v=3&wmode=direct',
+        'md5': '5a2abf40babeac9812ed20ae12d34e10',
+        'info_dict': {
+            'id': '59307601',
+            'ext': 'flv',
+            'title': '-CG11- Canada Games Figure Skating',
+            'uploader': 'sportscanadatv',
+        },
+        'skip': 'This Pro Broadcaster has chosen to remove this video from the ustream.tv site.',
+    }, {
+        'url': 'http://www.ustream.tv/embed/10299409',
+        'info_dict': {
+            'id': '10299409',
+        },
+        'playlist_count': 3,
+    }, {
+        'url': 'http://www.ustream.tv/recorded/91343263',
+        'info_dict': {
+            'id': '91343263',
+            'ext': 'mp4',
+            'title': 'GitHub Universe - General Session - Day 1',
+            'upload_date': '20160914',
+            'description': 'GitHub Universe - General Session - Day 1',
+            'timestamp': 1473872730,
+            'uploader': 'wa0dnskeqkr',
+            'uploader_id': '38977840',
+        },
+        'params': {
+            'skip_download': True,  # m3u8 download
+        },
+    }]
+
+    def _get_stream_info(self, url, video_id, app_id_ver, extra_note=None):
+        def num_to_hex(n):
+            return hex(n)[2:]
+
+        rnd = random.randrange
+
+        if not extra_note:
+            extra_note = ''
+
+        conn_info = self._download_json(
+            'http://r%d-1-%s-recorded-lp-live.ums.ustream.tv/1/ustream' % (rnd(1e8), video_id),
+            video_id, note='Downloading connection info' + extra_note,
+            query={
+                'type': 'viewer',
+                'appId': app_id_ver[0],
+                'appVersion': app_id_ver[1],
+                'rsid': '%s:%s' % (num_to_hex(rnd(1e8)), num_to_hex(rnd(1e8))),
+                'rpin': '_rpin.%d' % rnd(1e15),
+                'referrer': url,
+                'media': video_id,
+                'application': 'recorded',
+            })
+        host = conn_info[0]['args'][0]['host']
+        connection_id = conn_info[0]['args'][0]['connectionId']
+
+        return self._download_json(
+            'http://%s/1/ustream?connectionId=%s' % (host, connection_id),
+            video_id, note='Downloading stream info' + extra_note)
+
+    def _get_streams(self, url, video_id, app_id_ver):
+        # Sometimes the return dict does not have 'stream'
+        for trial_count in range(3):
+            stream_info = self._get_stream_info(
+                url, video_id, app_id_ver,
+                extra_note=' (try %d)' % (trial_count + 1) if trial_count > 0 else '')
+            if 'stream' in stream_info[0]['args'][0]:
+                return stream_info[0]['args'][0]['stream']
+        return []
+
+    def _parse_segmented_mp4(self, dash_stream_info):
+        def resolve_dash_template(template, idx, chunk_hash):
+            return template.replace('%', compat_str(idx), 1).replace('%', chunk_hash)
+
+        formats = []
+        for stream in dash_stream_info['streams']:
+            # Use only one provider to avoid too many formats
+            provider = dash_stream_info['providers'][0]
+            fragments = [{
+                'url': resolve_dash_template(
+                    provider['url'] + stream['initUrl'], 0, dash_stream_info['hashes']['0'])
+            }]
+            for idx in range(dash_stream_info['videoLength'] // dash_stream_info['chunkTime']):
+                fragments.append({
+                    'url': resolve_dash_template(
+                        provider['url'] + stream['segmentUrl'], idx,
+                        dash_stream_info['hashes'][compat_str(idx // 10 * 10)])
+                })
+            content_type = stream['contentType']
+            kind = content_type.split('/')[0]
+            f = {
+                'format_id': '-'.join(filter(None, [
+                    'dash', kind, str_or_none(stream.get('bitrate'))])),
+                'protocol': 'http_dash_segments',
+                # TODO: generate a MPD doc for external players?
+                'url': encode_data_uri(b'<MPD/>', 'text/xml'),
+                'ext': mimetype2ext(content_type),
+                'height': stream.get('height'),
+                'width': stream.get('width'),
+                'fragments': fragments,
+            }
+            if kind == 'video':
+                f.update({
+                    'vcodec': stream.get('codec'),
+                    'acodec': 'none',
+                    'vbr': stream.get('bitrate'),
+                })
+            else:
+                f.update({
+                    'vcodec': 'none',
+                    'acodec': stream.get('codec'),
+                    'abr': stream.get('bitrate'),
+                })
+            formats.append(f)
+        return formats