Use traverse_obj for get json info data

yt_dlp/extractor/smotrim.py

@@ -2,6 +2,7 @@ import re
 
 from .common import InfoExtractor
 from ..utils import ExtractorError, int_or_none
+from ..utils.traversal import traverse_obj
 
 
 class SmotrimIE(InfoExtractor):
@@ -126,24 +127,19 @@ class SmotrimIE(InfoExtractor):
             raise ExtractorError(str(e), expected=True)
         if json_info.get('status') != 200:
             raise ExtractorError('Json download error. Status code: %s' % str(json_info.get('status')), expected=True)
-        try:
+        media_info = traverse_obj(json_info, ('data', 'playlist', 'medialist', 0))
-            media_info = json_info.get('data').get('playlist').get('medialist')[0]
+        if not media_info:
-        except (KeyError, AttributeError, TypeError) as e:
+            raise ExtractorError('Unable to get media_info', expected=True)
-            raise ExtractorError('media_info get error: %s' % str(e), expected=True)
+        formats, subtitles = self._extract_m3u8_formats_and_subtitles(
-        try:
+            traverse_obj(media_info, ('sources', 'm3u8', 'auto')), video_id, 'mp4', m3u8_id='hls',
-            formats, subtitles = self._extract_m3u8_formats_and_subtitles(
+        )
-                media_info.get('sources').get('m3u8').get('auto'), video_id, 'mp4', m3u8_id='hls',
-            )
-            res = {
-                'id': video_id,
-                'title': media_info.get('title'),
-                'thumbnail': media_info.get('pictures').get('16:9'),
-                'formats': formats,
-                'subtitles': subtitles,
-                'is_live': json_info.get('data').get('playlist').get('type') == 'live',
-                'duration': int_or_none(media_info.get('duration')),
-            }
-        except (KeyError, AttributeError, TypeError) as e:
-            raise ExtractorError('Result error: %s' % str(e), expected=True)
 
-        return res
+        return {
+            'id': video_id,
+            'title': traverse_obj(media_info, ('title')),
+            'thumbnail': traverse_obj(media_info, ('pictures', '16:9')),
+            'formats': formats,
+            'subtitles': subtitles,
+            'is_live': traverse_obj(json_info, ('data', 'playlist', 'type')) == 'live',
+            'duration': int_or_none(traverse_obj(media_info, ('duration'))),
+        }