Plugin cleanup and tweaks

plugins/youtube_download/yt_dlp/extractor/piksel.py

@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
 from .common import InfoExtractor
@@ -33,6 +30,7 @@ class PikselIE(InfoExtractor):
             )\.jp|
             vidego\.baltimorecity\.gov
         )/v/(?:refid/(?P<refid>[^/]+)/prefid/)?(?P<id>[\w-]+)'''
+    _EMBED_REGEX = [r'<iframe[^>]+src=["\'](?P<url>(?:https?:)?//player\.piksel\.com/v/[a-z0-9]+)']
     _TESTS = [
         {
             'url': 'http://player.piksel.com/v/ums2867l',
@@ -65,14 +63,6 @@ class PikselIE(InfoExtractor):
         }
     ]
 
-    @staticmethod
-    def _extract_url(webpage):
-        mobj = re.search(
-            r'<iframe[^>]+src=["\'](?P<url>(?:https?:)?//player\.piksel\.com/v/[a-z0-9]+)',
-            webpage)
-        if mobj:
-            return mobj.group('url')
-
     def _call_api(self, app_token, resource, display_id, query, fatal=True):
         response = (self._download_json(
             'http://player.piksel.com/ws/ws_%s/api/%s/mode/json/apiv/5' % (resource, app_token),
@@ -163,8 +153,6 @@ class PikselIE(InfoExtractor):
                 re.sub(r'/od/[^/]+/', '/od/http/', smil_url), video_id,
                 transform_source=transform_source, fatal=False))
 
-        self._sort_formats(formats, ('tbr', ))  # Incomplete resolution information
-
         subtitles = {}
         for caption in video_data.get('captions', []):
             caption_url = caption.get('url')
@@ -180,4 +168,5 @@ class PikselIE(InfoExtractor):
             'timestamp': parse_iso8601(video_data.get('dateadd')),
             'formats': formats,
             'subtitles': subtitles,
+            '_format_sort_fields': ('tbr', ),  # Incomplete resolution information
         }