diff --git a/yt_dlp/extractor/arnes.py b/yt_dlp/extractor/arnes.py
index c0032fcab9..050c252e3f 100644
--- a/yt_dlp/extractor/arnes.py
+++ b/yt_dlp/extractor/arnes.py
@@ -7,6 +7,7 @@ from ..compat import (
     compat_urllib_parse_urlparse,
 )
 from ..utils import (
+    format_field,
     float_or_none,
     int_or_none,
     parse_iso8601,
@@ -92,7 +93,7 @@ class ArnesIE(InfoExtractor):
             'timestamp': parse_iso8601(video.get('creationTime')),
             'channel': channel.get('name'),
             'channel_id': channel_id,
-            'channel_url': self._BASE_URL + '/?channel=' + channel_id if channel_id else None,
+            'channel_url': format_field(channel_id, template=f'{self._BASE_URL}/?channel=%s'),
             'duration': float_or_none(video.get('duration'), 1000),
             'view_count': int_or_none(video.get('views')),
             'tags': video.get('hashtags'),
diff --git a/yt_dlp/extractor/awaan.py b/yt_dlp/extractor/awaan.py
index b5d1b57af2..f5e559c9f4 100644
--- a/yt_dlp/extractor/awaan.py
+++ b/yt_dlp/extractor/awaan.py
@@ -9,6 +9,7 @@ from ..compat import (
     compat_str,
 )
 from ..utils import (
+    format_field,
     int_or_none,
     parse_iso8601,
     smuggle_url,
@@ -43,7 +44,7 @@ class AWAANBaseIE(InfoExtractor):
             'id': video_id,
             'title': title,
             'description': video_data.get('description_en') or video_data.get('description_ar'),
-            'thumbnail': 'http://admin.mangomolo.com/analytics/%s' % img if img else None,
+            'thumbnail': format_field(img, template='http://admin.mangomolo.com/analytics/%s'),
             'duration': int_or_none(video_data.get('duration')),
             'timestamp': parse_iso8601(video_data.get('create_time'), ' '),
             'is_live': is_live,
diff --git a/yt_dlp/extractor/carambatv.py b/yt_dlp/extractor/carambatv.py
index b57b86af7e..7e5cc90fb5 100644
--- a/yt_dlp/extractor/carambatv.py
+++ b/yt_dlp/extractor/carambatv.py
@@ -4,6 +4,7 @@ from __future__ import unicode_literals
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
+    format_field,
     float_or_none,
     int_or_none,
     try_get,
@@ -43,7 +44,7 @@ class CarambaTVIE(InfoExtractor):
         formats = [{
             'url': base_url + f['fn'],
             'height': int_or_none(f.get('height')),
-            'format_id': '%sp' % f['height'] if f.get('height') else None,
+            'format_id': format_field(f, 'height', '%sp'),
         } for f in video['qualities'] if f.get('fn')]
         self._sort_formats(formats)
 
diff --git a/yt_dlp/extractor/flickr.py b/yt_dlp/extractor/flickr.py
index 6c82fae3c4..2ed6c2bdc6 100644
--- a/yt_dlp/extractor/flickr.py
+++ b/yt_dlp/extractor/flickr.py
@@ -7,6 +7,7 @@ from ..compat import (
 )
 from ..utils import (
     ExtractorError,
+    format_field,
     int_or_none,
     qualities,
 )
@@ -95,7 +96,7 @@ class FlickrIE(InfoExtractor):
             owner = video_info.get('owner', {})
             uploader_id = owner.get('nsid')
             uploader_path = owner.get('path_alias') or uploader_id
-            uploader_url = 'https://www.flickr.com/photos/%s/' % uploader_path if uploader_path else None
+            uploader_url = format_field(uploader_path, template='https://www.flickr.com/photos/%s/')
 
             return {
                 'id': video_id,
diff --git a/yt_dlp/extractor/gamejolt.py b/yt_dlp/extractor/gamejolt.py
index 7f2f6f3e1d..a13e528f52 100644
--- a/yt_dlp/extractor/gamejolt.py
+++ b/yt_dlp/extractor/gamejolt.py
@@ -7,6 +7,7 @@ from .common import InfoExtractor
 from ..compat import compat_urllib_parse_unquote
 from ..utils import (
     determine_ext,
+    format_field,
     int_or_none,
     str_or_none,
     traverse_obj,
@@ -86,7 +87,7 @@ class GameJoltBaseIE(InfoExtractor):
             'display_id': post_data.get('slug'),
             'uploader': user_data.get('display_name') or user_data.get('name'),
             'uploader_id': user_data.get('username'),
-            'uploader_url': 'https://gamejolt.com' + user_data['url'] if user_data.get('url') else None,
+            'uploader_url': format_field(user_data, 'url', 'https://gamejolt.com%s'),
             'categories': [try_get(category, lambda x: '%s - %s' % (x['community']['name'], x['channel'].get('display_title') or x['channel']['title']))
                            for category in post_data.get('communities' or [])],
             'tags': traverse_obj(
diff --git a/yt_dlp/extractor/instagram.py b/yt_dlp/extractor/instagram.py
index 68288495ca..645e4dff11 100644
--- a/yt_dlp/extractor/instagram.py
+++ b/yt_dlp/extractor/instagram.py
@@ -12,6 +12,7 @@ from ..compat import (
 )
 from ..utils import (
     ExtractorError,
+    format_field,
     float_or_none,
     get_element_by_attribute,
     int_or_none,
@@ -341,7 +342,7 @@ class InstagramIE(InstagramBaseIE):
             if nodes:
                 return self.playlist_result(
                     self._extract_nodes(nodes, True), video_id,
-                    'Post by %s' % uploader_id if uploader_id else None, description)
+                    format_field(uploader_id, template='Post by %s'), description)
 
             video_url = self._og_search_video_url(webpage, secure=False)
 
diff --git a/yt_dlp/extractor/joj.py b/yt_dlp/extractor/joj.py
index 6376181835..7350f537c6 100644
--- a/yt_dlp/extractor/joj.py
+++ b/yt_dlp/extractor/joj.py
@@ -6,6 +6,7 @@ import re
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
+    format_field,
     int_or_none,
     js_to_json,
     try_get,
@@ -72,7 +73,7 @@ class JojIE(InfoExtractor):
                     r'(\d+)[pP]\.', format_url, 'height', default=None)
                 formats.append({
                     'url': format_url,
-                    'format_id': '%sp' % height if height else None,
+                    'format_id': format_field(height, template='%sp'),
                     'height': int(height),
                 })
         if not formats:
diff --git a/yt_dlp/extractor/kaltura.py b/yt_dlp/extractor/kaltura.py
index c8f60ef455..c582164580 100644
--- a/yt_dlp/extractor/kaltura.py
+++ b/yt_dlp/extractor/kaltura.py
@@ -12,6 +12,7 @@ from ..compat import (
 from ..utils import (
     clean_html,
     ExtractorError,
+    format_field,
     int_or_none,
     unsmuggle_url,
     smuggle_url,
@@ -372,6 +373,6 @@ class KalturaIE(InfoExtractor):
             'thumbnail': info.get('thumbnailUrl'),
             'duration': info.get('duration'),
             'timestamp': info.get('createdAt'),
-            'uploader_id': info.get('userId') if info.get('userId') != 'None' else None,
+            'uploader_id': format_field(info, 'userId', ignore=('None', None)),
             'view_count': info.get('plays'),
         }
diff --git a/yt_dlp/extractor/keezmovies.py b/yt_dlp/extractor/keezmovies.py
index 027f43cf01..06dbcbb402 100644
--- a/yt_dlp/extractor/keezmovies.py
+++ b/yt_dlp/extractor/keezmovies.py
@@ -8,6 +8,7 @@ from ..compat import compat_urllib_parse_unquote
 from ..utils import (
     determine_ext,
     ExtractorError,
+    format_field,
     int_or_none,
     str_to_int,
     strip_or_none,
@@ -69,7 +70,7 @@ class KeezMoviesIE(InfoExtractor):
                     video_url, title, 32).decode('utf-8')
             formats.append({
                 'url': format_url,
-                'format_id': '%dp' % height if height else None,
+                'format_id': format_field(height, template='%dp'),
                 'height': height,
                 'tbr': tbr,
             })
diff --git a/yt_dlp/extractor/line.py b/yt_dlp/extractor/line.py
index e1d5f21e17..24e04edb5e 100644
--- a/yt_dlp/extractor/line.py
+++ b/yt_dlp/extractor/line.py
@@ -5,6 +5,7 @@ from __future__ import unicode_literals
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
+    format_field,
     int_or_none,
     js_to_json,
     str_or_none,
@@ -121,7 +122,7 @@ class LineLiveBaseIE(InfoExtractor):
             'timestamp': int_or_none(item.get('createdAt')),
             'channel': channel.get('name'),
             'channel_id': channel_id,
-            'channel_url': 'https://live.line.me/channels/' + channel_id if channel_id else None,
+            'channel_url': format_field(channel_id, template='https://live.line.me/channels/%s'),
             'duration': int_or_none(item.get('archiveDuration')),
             'view_count': int_or_none(item.get('viewerCount')),
             'comment_count': int_or_none(item.get('chatCount')),
diff --git a/yt_dlp/extractor/lnkgo.py b/yt_dlp/extractor/lnkgo.py
index 7da0b4284b..bd2dffac0c 100644
--- a/yt_dlp/extractor/lnkgo.py
+++ b/yt_dlp/extractor/lnkgo.py
@@ -73,14 +73,12 @@ class LnkGoIE(InfoExtractor):
             video_id, 'mp4', 'm3u8_native')
         self._sort_formats(formats)
 
-        poster_image = video_info.get('posterImage')
-
         return {
             'id': video_id,
             'display_id': display_id,
             'title': title,
             'formats': formats,
-            'thumbnail': 'https://lnk.lt/all-images/' + poster_image if poster_image else None,
+            'thumbnail': format_field(video_info, 'posterImage', 'https://lnk.lt/all-images/%s'),
             'duration': int_or_none(video_info.get('duration')),
             'description': clean_html(video_info.get('htmlDescription')),
             'age_limit': self._AGE_LIMITS.get(video_info.get('pgRating'), 0),
diff --git a/yt_dlp/extractor/medaltv.py b/yt_dlp/extractor/medaltv.py
index 2ece5aac4a..59cc30736c 100644
--- a/yt_dlp/extractor/medaltv.py
+++ b/yt_dlp/extractor/medaltv.py
@@ -7,6 +7,7 @@ from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
     ExtractorError,
+    format_field,
     float_or_none,
     int_or_none,
     str_or_none,
@@ -118,7 +119,7 @@ class MedalTVIE(InfoExtractor):
         author = try_get(
             hydration_data, lambda x: list(x['profiles'].values())[0], dict) or {}
         author_id = str_or_none(author.get('id'))
-        author_url = 'https://medal.tv/users/{0}'.format(author_id) if author_id else None
+        author_url = format_field(author_id, template='https://medal.tv/users/%s')
 
         return {
             'id': video_id,
diff --git a/yt_dlp/extractor/minds.py b/yt_dlp/extractor/minds.py
index 8e9f0f8254..9da07207ba 100644
--- a/yt_dlp/extractor/minds.py
+++ b/yt_dlp/extractor/minds.py
@@ -5,6 +5,7 @@ from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
     clean_html,
+    format_field,
     int_or_none,
     str_or_none,
     strip_or_none,
@@ -120,7 +121,7 @@ class MindsIE(MindsBaseIE):
             'timestamp': int_or_none(entity.get('time_created')),
             'uploader': strip_or_none(owner.get('name')),
             'uploader_id': uploader_id,
-            'uploader_url': 'https://www.minds.com/' + uploader_id if uploader_id else None,
+            'uploader_url': format_field(uploader_id, template='https://www.minds.com/%s'),
             'view_count': int_or_none(entity.get('play:count')),
             'like_count': int_or_none(entity.get('thumbs:up:count')),
             'dislike_count': int_or_none(entity.get('thumbs:down:count')),
diff --git a/yt_dlp/extractor/peertube.py b/yt_dlp/extractor/peertube.py
index 1e22f24e3f..e0b2ab9822 100644
--- a/yt_dlp/extractor/peertube.py
+++ b/yt_dlp/extractor/peertube.py
@@ -7,6 +7,7 @@ import re
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
+    format_field,
     int_or_none,
     parse_resolution,
     str_or_none,
@@ -1386,8 +1387,7 @@ class PeerTubePlaylistIE(InfoExtractor):
         playlist_timestamp = unified_timestamp(info.get('createdAt'))
         channel = try_get(info, lambda x: x['ownerAccount']['name']) or info.get('displayName')
         channel_id = try_get(info, lambda x: x['ownerAccount']['id']) or info.get('id')
-        thumbnail = info.get('thumbnailPath')
-        thumbnail = f'https://{host}{thumbnail}' if thumbnail else None
+        thumbnail = format_field(info, 'thumbnailPath', f'https://{host}%s')
 
         entries = OnDemandPagedList(functools.partial(
             self.fetch_page, host, id, type), self._PAGE_SIZE)
diff --git a/yt_dlp/extractor/pornhub.py b/yt_dlp/extractor/pornhub.py
index d712e0036f..17c8c91007 100644
--- a/yt_dlp/extractor/pornhub.py
+++ b/yt_dlp/extractor/pornhub.py
@@ -18,6 +18,7 @@ from ..utils import (
     clean_html,
     determine_ext,
     ExtractorError,
+    format_field,
     int_or_none,
     merge_dicts,
     NO_DEFAULT,
@@ -431,7 +432,7 @@ class PornHubIE(PornHubBaseIE):
                     default=None))
             formats.append({
                 'url': format_url,
-                'format_id': '%dp' % height if height else None,
+                'format_id': format_field(height, template='%dp'),
                 'height': height,
             })
 
diff --git a/yt_dlp/extractor/radlive.py b/yt_dlp/extractor/radlive.py
index 2de7ab04a9..dc98973056 100644
--- a/yt_dlp/extractor/radlive.py
+++ b/yt_dlp/extractor/radlive.py
@@ -1,6 +1,12 @@
 import json
 
-from ..utils import ExtractorError, traverse_obj, try_get, unified_timestamp
+from ..utils import (
+    ExtractorError,
+    format_field,
+    traverse_obj,
+    try_get,
+    unified_timestamp
+)
 from .common import InfoExtractor
 
 
@@ -74,7 +80,7 @@ class RadLiveIE(InfoExtractor):
             'release_timestamp': release_date,
             'channel': channel.get('name'),
             'channel_id': channel_id,
-            'channel_url': f'https://rad.live/content/channel/{channel_id}' if channel_id else None,
+            'channel_url': format_field(channel_id, template='https://rad.live/content/channel/%s'),
 
         }
         if content_type == 'episode':
diff --git a/yt_dlp/extractor/storyfire.py b/yt_dlp/extractor/storyfire.py
index 9c698626fc..e18a59a49c 100644
--- a/yt_dlp/extractor/storyfire.py
+++ b/yt_dlp/extractor/storyfire.py
@@ -5,7 +5,7 @@ import functools
 
 from .common import InfoExtractor
 from ..utils import (
-    # HEADRequest,
+    format_field,
     int_or_none,
     OnDemandPagedList,
     smuggle_url,
@@ -26,18 +26,6 @@ class StoryFireBaseIE(InfoExtractor):
             r'https?://player\.vimeo\.com/external/(\d+)',
             video['vimeoVideoURL'], 'vimeo id')
 
-        # video_url = self._request_webpage(
-        #    HEADRequest(video['vimeoVideoURL']), video_id).geturl()
-        # formats = []
-        # for v_url, suffix in [(video_url, '_sep'), (video_url.replace('/sep/video/', '/video/'), '')]:
-        #    formats.extend(self._extract_m3u8_formats(
-        #        v_url, video_id, 'mp4', 'm3u8_native',
-        #        m3u8_id='hls' + suffix, fatal=False))
-        #    formats.extend(self._extract_mpd_formats(
-        #        v_url.replace('.m3u8', '.mpd'), video_id,
-        #        mpd_id='dash' + suffix, fatal=False))
-        # self._sort_formats(formats)
-
         uploader_id = video.get('hostID')
 
         return {
@@ -51,7 +39,6 @@ class StoryFireBaseIE(InfoExtractor):
                         'Referer': 'https://storyfire.com/',
                     }
                 }),
-            # 'formats': formats,
             'thumbnail': video.get('storyImage'),
             'view_count': int_or_none(video.get('views')),
             'like_count': int_or_none(video.get('likesCount')),
@@ -60,7 +47,7 @@ class StoryFireBaseIE(InfoExtractor):
             'timestamp': int_or_none(video.get('publishDate')),
             'uploader': video.get('username'),
             'uploader_id': uploader_id,
-            'uploader_url': 'https://storyfire.com/user/%s/video' % uploader_id if uploader_id else None,
+            'uploader_url': format_field(uploader_id, template='https://storyfire.com/user/%s/video'),
             'episode_number': int_or_none(video.get('episodeNumber') or video.get('episode_number')),
         }
 
diff --git a/yt_dlp/extractor/trovo.py b/yt_dlp/extractor/trovo.py
index 580cb533b1..65ea13ddb2 100644
--- a/yt_dlp/extractor/trovo.py
+++ b/yt_dlp/extractor/trovo.py
@@ -7,6 +7,7 @@ import json
 from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
+    format_field,
     int_or_none,
     str_or_none,
     try_get,
@@ -28,7 +29,7 @@ class TrovoBaseIE(InfoExtractor):
         return {
             'uploader': streamer_info.get('nickName'),
             'uploader_id': str_or_none(streamer_info.get('uid')),
-            'uploader_url': 'https://trovo.live/' + username if username else None,
+            'uploader_url': format_field(username, template='https://trovo.live/%s'),
         }
 
 
diff --git a/yt_dlp/extractor/twitter.py b/yt_dlp/extractor/twitter.py
index f8a8d82e8e..8565a7c46b 100644
--- a/yt_dlp/extractor/twitter.py
+++ b/yt_dlp/extractor/twitter.py
@@ -13,6 +13,7 @@ from ..compat import (
 from ..utils import (
     dict_get,
     ExtractorError,
+    format_field,
     float_or_none,
     int_or_none,
     traverse_obj,
@@ -469,7 +470,7 @@ class TwitterIE(TwitterBaseIE):
             'uploader': uploader,
             'timestamp': unified_timestamp(status.get('created_at')),
             'uploader_id': uploader_id,
-            'uploader_url': 'https://twitter.com/' + uploader_id if uploader_id else None,
+            'uploader_url': format_field(uploader_id, template='https://twitter.com/%s'),
             'like_count': int_or_none(status.get('favorite_count')),
             'repost_count': int_or_none(status.get('retweet_count')),
             'comment_count': int_or_none(status.get('reply_count')),
diff --git a/yt_dlp/extractor/vidio.py b/yt_dlp/extractor/vidio.py
index 571448bf21..e99dbdefa1 100644
--- a/yt_dlp/extractor/vidio.py
+++ b/yt_dlp/extractor/vidio.py
@@ -6,6 +6,7 @@ from .common import InfoExtractor
 from ..utils import (
     clean_html,
     ExtractorError,
+    format_field,
     get_element_by_class,
     int_or_none,
     parse_iso8601,
@@ -160,7 +161,7 @@ class VidioIE(VidioBaseIE):
             'uploader': user.get('name'),
             'timestamp': parse_iso8601(video.get('created_at')),
             'uploader_id': username,
-            'uploader_url': 'https://www.vidio.com/@' + username if username else None,
+            'uploader_url': format_field(username, template='https://www.vidio.com/@%s'),
             'channel': channel.get('name'),
             'channel_id': str_or_none(channel.get('id')),
             'view_count': get_count('view_count'),
@@ -291,5 +292,5 @@ class VidioLiveIE(VidioBaseIE):
             'uploader': user.get('name'),
             'timestamp': parse_iso8601(stream_meta.get('start_time')),
             'uploader_id': username,
-            'uploader_url': 'https://www.vidio.com/@' + username if username else None,
+            'uploader_url': format_field(username, template='https://www.vidio.com/@%s'),
         }
diff --git a/yt_dlp/extractor/vidlii.py b/yt_dlp/extractor/vidlii.py
index ce7487ec16..a63919ff24 100644
--- a/yt_dlp/extractor/vidlii.py
+++ b/yt_dlp/extractor/vidlii.py
@@ -6,6 +6,7 @@ import re
 from .common import InfoExtractor
 from ..utils import (
     HEADRequest,
+    format_field,
     float_or_none,
     get_element_by_id,
     int_or_none,
@@ -102,7 +103,7 @@ class VidLiiIE(InfoExtractor):
         uploader = self._search_regex(
             r'<div[^>]+class=["\']wt_person[^>]+>\s*<a[^>]+\bhref=["\']/user/[^>]+>([^<]+)',
             webpage, 'uploader', fatal=False)
-        uploader_url = 'https://www.vidlii.com/user/%s' % uploader if uploader else None
+        uploader_url = format_field(uploader, template='https://www.vidlii.com/user/%s')
 
         upload_date = unified_strdate(self._html_search_meta(
             'datePublished', webpage, default=None) or self._search_regex(
diff --git a/yt_dlp/extractor/vine.py b/yt_dlp/extractor/vine.py
index 07fce0daa4..e59b1037b0 100644
--- a/yt_dlp/extractor/vine.py
+++ b/yt_dlp/extractor/vine.py
@@ -6,6 +6,7 @@ from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
     determine_ext,
+    format_field,
     int_or_none,
     unified_timestamp,
 )
@@ -92,7 +93,7 @@ class VineIE(InfoExtractor):
 
         username = data.get('username')
 
-        alt_title = 'Vine by %s' % username if username else None
+        alt_title = format_field(username, template='Vine by %s')
 
         return {
             'id': video_id,
diff --git a/yt_dlp/extractor/younow.py b/yt_dlp/extractor/younow.py
index 128faa30df..583aea38d9 100644
--- a/yt_dlp/extractor/younow.py
+++ b/yt_dlp/extractor/younow.py
@@ -7,6 +7,7 @@ from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
     ExtractorError,
+    format_field,
     int_or_none,
     try_get,
 )
@@ -93,7 +94,7 @@ def _extract_moment(item, fatal=True):
 
     uploader = try_get(item, lambda x: x['owner']['name'], compat_str)
     uploader_id = try_get(item, lambda x: x['owner']['userId'])
-    uploader_url = 'https://www.younow.com/%s' % uploader if uploader else None
+    uploader_url = format_field(uploader, template='https://www.younow.com/%s')
 
     entry = {
         'extractor_key': 'YouNowMoment',
diff --git a/yt_dlp/extractor/youtube.py b/yt_dlp/extractor/youtube.py
index 09a0b22799..d8a63a3d2d 100644
--- a/yt_dlp/extractor/youtube.py
+++ b/yt_dlp/extractor/youtube.py
@@ -3331,7 +3331,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'uploader_id': self._search_regex(r'/(?:channel|user)/([^/?&#]+)', owner_profile_url, 'uploader id') if owner_profile_url else None,
             'uploader_url': owner_profile_url,
             'channel_id': channel_id,
-            'channel_url': f'https://www.youtube.com/channel/{channel_id}' if channel_id else None,
+            'channel_url': format_field(channel_id, template='https://www.youtube.com/channel/%s'),
             'duration': duration,
             'view_count': int_or_none(
                 get_first((video_details, microformats), (..., 'viewCount'))
diff --git a/yt_dlp/extractor/zhihu.py b/yt_dlp/extractor/zhihu.py
index d1ed55be35..278a9438e8 100644
--- a/yt_dlp/extractor/zhihu.py
+++ b/yt_dlp/extractor/zhihu.py
@@ -2,7 +2,7 @@
 from __future__ import unicode_literals
 
 from .common import InfoExtractor
-from ..utils import float_or_none, int_or_none
+from ..utils import format_field, float_or_none, int_or_none
 
 
 class ZhihuIE(InfoExtractor):
@@ -61,7 +61,7 @@ class ZhihuIE(InfoExtractor):
             'uploader': author.get('name'),
             'timestamp': int_or_none(zvideo.get('published_at')),
             'uploader_id': author.get('id'),
-            'uploader_url': 'https://www.zhihu.com/people/' + url_token if url_token else None,
+            'uploader_url': format_field(url_token, template='https://www.zhihu.com/people/%s'),
             'duration': float_or_none(video.get('duration')),
             'view_count': int_or_none(zvideo.get('play_count')),
             'like_count': int_or_none(zvideo.get('liked_count')),
diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index cb44a9c519..55bd67ea2f 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -4975,13 +4975,10 @@ def to_high_limit_path(path):
 
 
 def format_field(obj, field=None, template='%s', ignore=(None, ''), default='', func=None):
-    if field is None:
-        val = obj if obj is not None else default
-    else:
-        val = obj.get(field, default)
-    if func and val not in ignore:
-        val = func(val)
-    return template % val if val not in ignore else default
+    val = traverse_obj(obj, *variadic(field))
+    if val in ignore:
+        return default
+    return template % (func(val) if func else val)
 
 
 def clean_podcast_url(url):