[dvtv] PEP8 and correct format sorting (#4502)

youtube_dl/extractor/dvtv.py

@@ -2,11 +2,8 @@
 
 from __future__ import unicode_literals
 
-import re
-import json
 from .common import InfoExtractor
 from ..utils import (
-	ExtractorError,
     js_to_json,
     unescapeHTML
 )
@@ -28,10 +25,10 @@ class DVTVIE(InfoExtractor):
         }
     }, {
         'url': 'http://video.aktualne.cz/dvtv/stropnicky-policie-vrbetice-preventivne-nekontrolovala/r~82ed4322849211e4a10c0025900fea04/',
-		'md5': 'd50455195a67a94c57f931360cc68a1b',
+        'md5': '6388f1941b48537dbd28791f712af8bf',
         'info_dict': {
             'id': '82ed4322849211e4a10c0025900fea04',
-			'ext': 'webm',
+            'ext': 'mp4',
             'title': 'Stropnický: Policie Vrbětice preventivně nekontrolovala'
         }
     }]
@@ -40,19 +37,22 @@ class DVTVIE(InfoExtractor):
         video_id = self._match_id(url)
         webpage = self._download_webpage(url, video_id)
 
-		code = self._search_regex(r'embedData[0-9a-f]{32}\[\'asset\'\] = (\{.+?\});', webpage, 'video JSON', flags=re.DOTALL)
+        code = self._search_regex(
+            r'(?s)embedData[0-9a-f]{32}\[\'asset\'\] = (\{.+?\});',
+            webpage, 'video JSON')
         payload = self._parse_json(code, video_id, transform_source=js_to_json)
         formats = []
         for source in payload['sources']:
+            ext = source['type'][6:]
             formats.append({
                 'url': source['file'],
-				'ext': source['type'][6:],
+                'ext': ext,
-				'format': '%s %s' % (source['type'][6:], source['label']),
+                'format': '%s %s' % (ext, source['label']),
-				'format_id': '%s-%s' % (source['type'][6:], source['label']),
+                'format_id': '%s-%s' % (ext, source['label']),
-				'resolution': source['label'],
+                'height': int(source['label'].rstrip('p')),
                 'fps': 25,
-				'preference': -1 if source['type'][6:] == 'mp4' and source['label'] == '720p' else -2
             })
+        self._sort_formats(formats)
 
         return {
             'id': video_id[-32:],