[1tv] Add support for hls (closes #11786)

youtube_dl/extractor/firsttv.py

@@ -86,18 +86,43 @@ class FirstTVIE(InfoExtractor):
             title = item['title']
             quality = qualities(QUALITIES)
             formats = []
+            path = None
             for f in item.get('mbr', []):
                 src = f.get('src')
                 if not src or not isinstance(src, compat_str):
                     continue
                 tbr = int_or_none(self._search_regex(
                     r'_(\d{3,})\.mp4', src, 'tbr', default=None))
+                if not path:
+                    path = self._search_regex(
+                        r'//[^/]+/(.+?)_\d+\.mp4', src,
+                        'm3u8 path', default=None)
                 formats.append({
                     'url': src,
                     'format_id': f.get('name'),
                     'tbr': tbr,
-                    'quality': quality(f.get('name')),
+                    'source_preference': quality(f.get('name')),
                 })
+            # m3u8 URL format is reverse engineered from [1] (search for
+            # master.m3u8). dashEdges (that is currently balancer-vod.1tv.ru)
+            # is taken from [2].
+            # 1. http://static.1tv.ru/player/eump1tv-current/eump-1tv.all.min.js?rnd=9097422834:formatted
+            # 2. http://static.1tv.ru/player/eump1tv-config/config-main.js?rnd=9097422834
+            if not path and len(formats) == 1:
+                path = self._search_regex(
+                    r'//[^/]+/(.+?$)', formats[0]['url'],
+                    'm3u8 path', default=None)
+            if path:
+                if len(formats) == 1:
+                    m3u8_path = ','
+                else:
+                    tbrs = [compat_str(t) for t in sorted(f['tbr'] for f in formats)]
+                    m3u8_path = '_,%s,%s' % (','.join(tbrs), '.mp4')
+                formats.extend(self._extract_m3u8_formats(
+                    'http://balancer-vod.1tv.ru/%s%s.urlset/master.m3u8'
+                    % (path, m3u8_path),
+                    display_id, 'mp4',
+                    entry_protocol='m3u8_native', m3u8_id='hls', fatal=False))
             self._sort_formats(formats)
 
             thumbnail = item.get('poster') or self._og_search_thumbnail(webpage)