Repository: yt-dlp/yt-dlp

Issue:
[imdb] Unable to extract video metadata
### Checklist

- [X] I'm reporting a broken site
- [X] I've verified that I'm running yt-dlp version **2022.03.08.1**. ([update instructions](https://github.com/yt-dlp/yt-dlp#update))
- [X] I've checked that all provided URLs are alive and playable in a browser
- [X] I've checked that all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/ytdl-org/youtube-dl#video-url-contains-an-ampersand-and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
- [X] I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues including closed ones. DO NOT post duplicates
- [X] I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
- [ ] I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and I'm willing to share it if required

### Region

Worldwide

### Description

Downloading trailers from IMDB no longer seems to work.

Example URLs:

* https://www.imdb.com/video/vi3516832537
* https://www.imdb.com/video/vi3001794585?playlistId=tt12801262

### Verbose log

```shell
% yt-dlp -vU https://www.imdb.com/video/vi3516832537
[debug] Command-line config: ['-vU', 'https://www.imdb.com/video/vi3516832537']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, err utf-8, pref UTF-8
[debug] yt-dlp version 2022.03.08.1 [c0c2c57d3]
[debug] Lazy loading extractors is disabled
[debug] Python version 3.10.4 (CPython 64bit) - Linux-5.16.18-hardened1-1-hardened-x86_64-with-glibc2.35
[debug] Checking exe version: ffmpeg -bsfs
[debug] Checking exe version: ffprobe -bsfs
[debug] exe versions: ffmpeg 5.0 (setts), ffprobe 5.0, rtmpdump 2.4
[debug] Optional libraries: brotli, Crypto, secretstorage, sqlite, websockets
[debug] Proxy map: {}
Latest version: 2022.03.08.1, Current version: 2022.03.08.1
yt-dlp is up to date (2022.03.08.1)
[debug] [imdb] Extracting URL: https://www.imdb.com/video/vi3516832537
[imdb] 3516832537: Downloading JSON metadata
[imdb] 3516832537: Downloading m3u8 information
[debug] Formats sorted by: hasvid, ie_pref, lang, quality, res, fps, hdr:12(7), vcodec:vp9.2(10), acodec, filesize, fs_approx, tbr, vbr, abr, asr, proto, vext, aext, hasaud, source, id
[imdb] 3516832537: Downloading webpage
ERROR: [imdb] 3516832537: Unable to extract video metadata; please report this issue on  https://github.com/yt-dlp/yt-dlp , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/common.py", line 639, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/imdb.py", line 91, in _real_extract
    video_metadata = self._parse_json(self._search_regex(
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/common.py", line 1225, in _search_regex
    raise RegexNotFoundError('Unable to extract %s' % _name)
```



Discussion:

Resolving patch:
diff --git a/yt_dlp/extractor/imdb.py b/yt_dlp/extractor/imdb.py
--- a/yt_dlp/extractor/imdb.py
+++ b/yt_dlp/extractor/imdb.py
@@ -7,9 +7,10 @@
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
+    int_or_none,
     mimetype2ext,
-    parse_duration,
     qualities,
+    traverse_obj,
     try_get,
     url_or_none,
 )
@@ -28,6 +29,17 @@ class ImdbIE(InfoExtractor):
             'title': 'No. 2',
             'description': 'md5:87bd0bdc61e351f21f20d2d7441cb4e7',
             'duration': 152,
+            'thumbnail': r're:^https?://.+\.jpg',
+        }
+    }, {
+        'url': 'https://www.imdb.com/video/vi3516832537',
+        'info_dict': {
+            'id': '3516832537',
+            'ext': 'mp4',
+            'title': 'Paul: U.S. Trailer #1',
+            'description': 'md5:17fcc4fe11ec29b4399be9d4c5ef126c',
+            'duration': 153,
+            'thumbnail': r're:^https?://.+\.jpg',
         }
     }, {
         'url': 'http://www.imdb.com/video/_/vi2524815897',
@@ -51,8 +63,13 @@ class ImdbIE(InfoExtractor):
 
     def _real_extract(self, url):
         video_id = self._match_id(url)
-
-        data = self._download_json(
+        webpage = self._download_webpage(f'https://www.imdb.com/video/vi{video_id}', video_id)
+        info = self._search_nextjs_data(webpage, video_id)
+        video_info = traverse_obj(info, ('props', 'pageProps', 'videoPlaybackData', 'video'), default={})
+        title = (traverse_obj(video_info, ('name', 'value'), ('primaryTitle', 'titleText', 'text'))
+                 or self._html_search_meta(('og:title', 'twitter:title'), webpage, default=None)
+                 or self._html_search_regex(r'<title>(.+?)</title>', webpage, 'title'))
+        data = video_info.get('playbackURLs') or try_get(self._download_json(
             'https://www.imdb.com/ve/data/VIDEO_PLAYBACK_DATA', video_id,
             query={
                 'key': base64.b64encode(json.dumps({
@@ -60,11 +77,10 @@ def _real_extract(self, url):
                     'subType': 'FORCE_LEGACY',
                     'id': 'vi%s' % video_id,
                 }).encode()).decode(),
-            })[0]
-
+            }), lambda x: x[0]['videoLegacyEncodings'])
         quality = qualities(('SD', '480p', '720p', '1080p'))
-        formats = []
-        for encoding in data['videoLegacyEncodings']:
+        formats, subtitles = [], {}
+        for encoding in data:
             if not encoding or not isinstance(encoding, dict):
                 continue
             video_url = url_or_none(encoding.get('url'))
@@ -73,11 +89,13 @@ def _real_extract(self, url):
             ext = mimetype2ext(encoding.get(
                 'mimeType')) or determine_ext(video_url)
             if ext == 'm3u8':
-                formats.extend(self._extract_m3u8_formats(
+                fmts, subs = self._extract_m3u8_formats_and_subtitles(
                     video_url, video_id, 'mp4', entry_protocol='m3u8_native',
-                    preference=1, m3u8_id='hls', fatal=False))
+                    preference=1, m3u8_id='hls', fatal=False)
+                subtitles = self._merge_subtitles(subtitles, subs)
+                formats.extend(fmts)
                 continue
-            format_id = encoding.get('definition')
+            format_id = traverse_obj(encoding, ('displayName', 'value'), 'definition')
             formats.append({
                 'format_id': format_id,
                 'url': video_url,
@@ -86,33 +104,15 @@ def _real_extract(self, url):
             })
         self._sort_formats(formats)
 
-        webpage = self._download_webpage(
-            'https://www.imdb.com/video/vi' + video_id, video_id)
-        video_metadata = self._parse_json(self._search_regex(
-            r'args\.push\(\s*({.+?})\s*\)\s*;', webpage,
-            'video metadata'), video_id)
-
-        video_info = video_metadata.get('VIDEO_INFO')
-        if video_info and isinstance(video_info, dict):
-            info = try_get(
-                video_info, lambda x: x[list(video_info.keys())[0]][0], dict)
-        else:
-            info = {}
-
-        title = self._html_search_meta(
-            ['og:title', 'twitter:title'], webpage) or self._html_search_regex(
-            r'<title>(.+?)</title>', webpage, 'title',
-            default=None) or info['videoTitle']
-
         return {
             'id': video_id,
             'title': title,
             'alt_title': info.get('videoSubTitle'),
             'formats': formats,
-            'description': info.get('videoDescription'),
-            'thumbnail': url_or_none(try_get(
-                info, lambda x: x['videoSlate']['source'])),
-            'duration': parse_duration(info.get('videoRuntime')),
+            'description': try_get(video_info, lambda x: x['description']['value']),
+            'thumbnail': url_or_none(try_get(video_info, lambda x: x['thumbnail']['url'])),
+            'duration': int_or_none(try_get(video_info, lambda x: x['runtime']['value'])),
+            'subtitles': subtitles,
         }
 
 


Test patch: