-        slide_baseurl = compat_urlparse.urljoin(
-            url, extract_data('SlideBaseUrl'))
-        slide_template = slide_baseurl + re.sub(
-            r'\{0:D?([0-9+])\}', r'%0\1d', extract_data('SlideImageFileNameTemplate'))
-        slides = []
-        last_slide_time = 0
-        for i in itertools.count(1):
-            sd = extract_str('Slides[%d]' % i, default=None)
-            if sd is None:
-                break
-            timestamp = int_or_none(self._search_regex(
-                r'^Mediasite\.PlaybackManifest\.CreateSlide\("[^"]*"\s*,\s*([0-9]+),',
-                sd, 'slide %s timestamp' % i, fatal=False))
-            slides.append({
-                'url': slide_template % i,
-                'duration': timestamp - last_slide_time,
-            })
-            last_slide_time = timestamp
-        formats.append({
-            'format_id': 'slides',
-            'protocol': 'slideshow',
-            'url': json.dumps(slides),
-            'preference': -10000,  # Downloader not yet written
-        })
-        self._sort_formats(formats)
-
-        title = extract_data('Title')
-        description = extract_data('Description', fatal=False)
-        duration = int_or_none(extract_data(
-            'Duration', fatal=False), scale=1000)
-        upload_date = unified_strdate(extract_data('AirDate', fatal=False))
-