Use site JSON for video details

Video details aren't in the original HTML now but populated by async JS.  Fixes #29321

youtube_dl/extractor/nuvid.py

@@ -1,23 +1,29 @@
 from __future__ import unicode_literals
 
-import re
-
 from .common import InfoExtractor
+from ..compat import (
+    compat_str,
+)
 from ..utils import (
     parse_duration,
+    try_get,
+    url_or_none,
 )
 
 
 class NuvidIE(InfoExtractor):
     _VALID_URL = r'https?://(?:www|m)\.nuvid\.com/video/(?P<id>[0-9]+)'
+    _PLAYER_CONFIG_URL_TEMPLATE = (
+        'https://www.nuvid.com/player_config_json/?vid=%s'
+        '&aid=0&domain_id=0&embed=0&ref=null&check_speed=0')
     _TEST = {
-        'url': 'http://m.nuvid.com/video/1310741/',
-        'md5': 'eab207b7ac4fccfb4e23c86201f11277',
+        'url': 'http://m.nuvid.com/video/6415801/',
         'info_dict': {
-            'id': '1310741',
+            'id': '6415801',
+            'format_id': 'hq',
             'ext': 'mp4',
-            'title': 'Horny babes show their awesome bodeis and',
-            'duration': 129,
+            'title': 'My best friend wanted to fuck my wife for a long time',
+            'duration': 1882,
             'age_limit': 18,
         }
     }
@@ -25,47 +31,39 @@ class NuvidIE(InfoExtractor):
     def _real_extract(self, url):
         video_id = self._match_id(url)
 
+        # nice to have, not required
         page_url = 'http://m.nuvid.com/video/%s' % video_id
         webpage = self._download_webpage(
-            page_url, video_id, 'Downloading video page')
-        # When dwnld_speed exists and has a value larger than the MP4 file's
-        # bitrate, Nuvid returns the MP4 URL
-        # It's unit is 100bytes/millisecond, see mobile-nuvid-min.js for the algorithm
-        self._set_cookie('nuvid.com', 'dwnld_speed', '10.0')
-        mp4_webpage = self._download_webpage(
-            page_url, video_id, 'Downloading video page for MP4 format')
-
-        html5_video_re = r'(?s)<(?:video|audio)[^<]*(?:>.*?<source[^>]*)?\s+src=["\'](.*?)["\']',
-        video_url = self._html_search_regex(html5_video_re, webpage, video_id)
-        mp4_video_url = self._html_search_regex(html5_video_re, mp4_webpage, video_id)
-        formats = [{
-            'url': video_url,
-        }]
-        if mp4_video_url != video_url:
-            formats.append({
-                'url': mp4_video_url,
-            })
-
-        title = self._html_search_regex(
+            page_url, video_id, 'Downloading video page', fatal=False)
+        json_url = self._PLAYER_CONFIG_URL_TEMPLATE % video_id
+        # necessary
+        player_json = self._download_json(
+            json_url, video_id, 'Downloading player JSON')
+        title = (try_get(player_json, lambda x: x['title'], compat_str)
+                 or self._html_search_regex(
             [r'<span title="([^"]+)">',
              r'<div class="thumb-holder video">\s*<h5[^>]*>([^<]+)</h5>',
-             r'<span[^>]+class="title_thumb">([^<]+)</span>'], webpage, 'title').strip()
-        thumbnails = [
-            {
-                'url': thumb_url,
-            } for thumb_url in re.findall(r'<img src="([^"]+)" alt="" />', webpage)
-        ]
-        thumbnail = thumbnails[0]['url'] if thumbnails else None
-        duration = parse_duration(self._html_search_regex(
-            [r'<i class="fa fa-clock-o"></i>\s*(\d{2}:\d{2})',
-             r'<span[^>]+class="view_time">([^<]+)</span>'], webpage, 'duration', fatal=False))
-
+             r'<span[^>]+class="title_thumb">([^<]+)</span>'],
+            webpage, 'title'))
+        if not title:
+            return
+        formats = []
+        for (k, v) in (try_get(
+                player_json, lambda x: x['files'], dict) or {}).items():
+            v = url_or_none(v)
+            if v:
+                formats.append({
+                    'format_id': k,
+                    'resolution': k,
+                    'quality': -2 if k == 'lq' else -1,
+                    'url': v,
+                })
+        self._sort_formats(formats)
         return {
             'id': video_id,
-            'title': title,
-            'thumbnails': thumbnails,
-            'thumbnail': thumbnail,
-            'duration': duration,
+            'title': title.strip(),
+            'thumbnail': player_json.get('poster'),
+            'duration': parse_duration(player_json.get('duration')),
             'age_limit': 18,
             'formats': formats,
         }