Add additional parameters in the API comments, highlight the user name in the uploader comments and I finished permalink of the comments.

assets/css/default.css

@@ -1,3 +1,10 @@
+.channel-owner {
+  background-color: #008BEC;
+  color: beige;
+  border-radius: 9px;
+  padding: 1px 6px;
+}
+
 .h-box {
   padding-left: 1em;
   padding-right: 1em;

src/invidious/comments.cr

@@ -159,6 +159,8 @@ def fetch_youtube_comments(id, continuation, proxies, format, locale)
         json.field "commentCount", comment_count
       end
       
+      json.field "videoId", id
+
       json.field "comments" do
         json.array do
           contents.as_a.each do |node|
@@ -217,6 +219,16 @@ def fetch_youtube_comments(id, continuation, proxies, format, locale)
               json.field "publishedText", translate(locale, "`x` ago", recode_date(published))
               json.field "likeCount", node_comment["likeCount"]
               json.field "commentId", node_comment["commentId"]
+              json.field "authorIsChannelOwner", node_comment["authorIsChannelOwner"]
+              
+              if node_comment["creatorHeart"]?
+                json.field "creatorHeart" do
+                  json.object do
+                    json.field "creatorThumbnail", node_comment["creatorHeart"]["creatorHeartRenderer"]["creatorThumbnail"]["thumbnails"][2]
+                    json.field "creatorName", node_comment["creatorHeart"]["creatorHeartRenderer"]["creatorThumbnail"]["accessibility"]["accessibilityData"]["label"]
+                  end
+                end
+              end
 
               if node_replies && !response["commentRepliesContinuation"]?
                 reply_count = node_replies["moreText"]["simpleText"].as_s.delete("View all reply replies,")
@@ -326,12 +338,12 @@ def template_youtube_comments(comments, locale)
       <div class="pure-u-20-24 pure-u-md-22-24">
         <p>
           <b>
-            <a href="#{child["authorUrl"]}">#{child["author"]}</a>
+            <a class="#{child["authorIsChannelOwner"] == true ? "channel-owner" : ""}" href="#{child["authorUrl"]}">#{child["author"]}</a>
           </b> 
           <p style="white-space:pre-wrap">#{child["contentHtml"]}</p>
           <span title="#{Time.unix(child["published"].as_i64).to_s(translate(locale,"%A %B %-d, %Y"))}">#{translate(locale, "`x` ago", recode_date(Time.unix(child["published"].as_i64)))}</span>
           |
-          <a href="https://www.youtube.com/watch?v=%s&lc=#{child["commentId"]}" title="#{translate(locale, "Youtube permalink of the comment")}">[YT]</a>
+          <a href="https://www.youtube.com/watch?v=#{comments["videoId"]}&lc=#{child["commentId"]}" title="#{translate(locale, "Youtube permalink of the comment")}">[YT]</a>
           | 
           <i class="icon ion-ios-thumbs-up"></i> #{number_with_separator(child["likeCount"])} 
         </p>