[extractor/youtube] Extract more metadata for comments (#7179)

Adds new comment fields:
* `author_url` - The url to the comment author's page
* `author_is_verified` - Whether the author is verified on the platform
* `is_pinned` - Whether the comment is pinned to the top of the comments

Closes https://github.com/yt-dlp/yt-dlp/issues/5411

Authored by: coletdjnz

yt_dlp/extractor/common.py

@@ -314,6 +314,11 @@ class InfoExtractor:
                         * "author" - human-readable name of the comment author
                         * "author_id" - user ID of the comment author
                         * "author_thumbnail" - The thumbnail of the comment author
+                        * "author_url" - The url to the comment author's page
+                        * "author_is_verified" - Whether the author is verified
+                                                 on the platform
+                        * "author_is_uploader" - Whether the comment is made by
+                                                 the video uploader
                         * "id" - Comment ID
                         * "html" - Comment as HTML
                         * "text" - Plain text of the comment
@@ -325,8 +330,8 @@ class InfoExtractor:
                         * "dislike_count" - Number of negative ratings of the comment
                         * "is_favorited" - Whether the comment is marked as
                                            favorite by the video uploader
-                        * "author_is_uploader" - Whether the comment is made by
+                        * "is_pinned" - Whether the comment is pinned to
-                                                 the video uploader
+                                        the top of the comments
     age_limit:      Age restriction for the video, as an integer (years)
     webpage_url:    The URL to the video webpage, if given to yt-dlp it
                     should allow to get the same result again. (It will be set

yt_dlp/extractor/youtube.py

@@ -3271,37 +3271,50 @@ def _extract_comment(self, comment_renderer, parent=None):
         if not comment_id:
             return
 
-        text = self._get_text(comment_renderer, 'contentText')
+        info = {
+            'id': comment_id,
+            'text': self._get_text(comment_renderer, 'contentText'),
+            'like_count': self._get_count(comment_renderer, 'voteCount'),
+            'author_id': traverse_obj(comment_renderer, ('authorEndpoint', 'browseEndpoint', 'browseId', {self.ucid_or_none})),
+            'author': self._get_text(comment_renderer, 'authorText'),
+            'author_thumbnail': traverse_obj(comment_renderer, ('authorThumbnail', 'thumbnails', -1, 'url', {url_or_none})),
+            'parent': parent or 'root',
+        }
 
         # Timestamp is an estimate calculated from the current time and time_text
         time_text = self._get_text(comment_renderer, 'publishedTimeText') or ''
         timestamp = self._parse_time_text(time_text)
 
-        author = self._get_text(comment_renderer, 'authorText')
+        info.update({
-        author_id = try_get(comment_renderer,
+            # FIXME: non-standard, but we need a way of showing that it is an estimate.
-                            lambda x: x['authorEndpoint']['browseEndpoint']['browseId'], str)
+            '_time_text': time_text,
-
-        votes = parse_count(try_get(comment_renderer, (lambda x: x['voteCount']['simpleText'],
-                                                       lambda x: x['likeCount']), str)) or 0
-        author_thumbnail = try_get(comment_renderer,
-                                   lambda x: x['authorThumbnail']['thumbnails'][-1]['url'], str)
-
-        author_is_uploader = try_get(comment_renderer, lambda x: x['authorIsChannelOwner'], bool)
-        is_favorited = 'creatorHeart' in (try_get(
-            comment_renderer, lambda x: x['actionButtons']['commentActionButtonsRenderer'], dict) or {})
-        return {
-            'id': comment_id,
-            'text': text,
             'timestamp': timestamp,
-            'time_text': time_text,
+        })
-            'like_count': votes,
+
-            'is_favorited': is_favorited,
+        info['author_url'] = urljoin(
-            'author': author,
+            'https://www.youtube.com', traverse_obj(comment_renderer, ('authorEndpoint', (
-            'author_id': author_id,
+                ('browseEndpoint', 'canonicalBaseUrl'), ('commandMetadata', 'webCommandMetadata', 'url'))),
-            'author_thumbnail': author_thumbnail,
+                expected_type=str, get_all=False))
-            'author_is_uploader': author_is_uploader,
+
-            'parent': parent or 'root'
+        author_is_uploader = traverse_obj(comment_renderer, 'authorIsChannelOwner')
-        }
+        if author_is_uploader is not None:
+            info['author_is_uploader'] = author_is_uploader
+
+        comment_abr = traverse_obj(
+            comment_renderer, ('actionsButtons', 'commentActionButtonsRenderer'), expected_type=dict)
+        if comment_abr is not None:
+            info['is_favorited'] = 'creatorHeart' in comment_abr
+
+        comment_ab_icontype = traverse_obj(
+            comment_renderer, ('authorCommentBadge', 'authorCommentBadgeRenderer', 'icon', 'iconType'))
+        if comment_ab_icontype is not None:
+            info['author_is_verified'] = comment_ab_icontype in ('CHECK_CIRCLE_THICK', 'OFFICIAL_ARTIST_BADGE')
+
+        is_pinned = traverse_obj(comment_renderer, 'pinnedCommentBadge')
+        if is_pinned:
+            info['is_pinned'] = True
+
+        return info
 
     def _comment_entries(self, root_continuation_data, ytcfg, video_id, parent=None, tracker=None):
 
@@ -3349,14 +3362,13 @@ def extract_thread(contents):
                 comment = self._extract_comment(comment_renderer, parent)
                 if not comment:
                     continue
-                is_pinned = bool(traverse_obj(comment_renderer, 'pinnedCommentBadge'))
                 comment_id = comment['id']
-                if is_pinned:
+                if comment.get('is_pinned'):
                     tracker['pinned_comment_ids'].add(comment_id)
                 # Sometimes YouTube may break and give us infinite looping comments.
                 # See: https://github.com/yt-dlp/yt-dlp/issues/6290
                 if comment_id in tracker['seen_comment_ids']:
-                    if comment_id in tracker['pinned_comment_ids'] and not is_pinned:
+                    if comment_id in tracker['pinned_comment_ids'] and not comment.get('is_pinned'):
                         # Pinned comments may appear a second time in newest first sort
                         # See: https://github.com/yt-dlp/yt-dlp/issues/6712
                         continue