Filter paid videos from RSS and channel list

src/invidious.cr

@@ -1909,6 +1909,7 @@ get "/feed/channel/:ucid" do |env|
 
   page = 1
   videos, count = get_60_videos(ucid, page, auto_generated)
+  videos.select! { |video| !video.paid }
 
   host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"]?)
   path = env.request.path
@@ -2173,6 +2174,7 @@ get "/channel/:ucid" do |env|
   end
 
   videos, count = get_60_videos(ucid, page, auto_generated, sort_by)
+  videos.select! { |video| !video.paid }
 
   templated "channel"
 end

src/invidious/helpers/helpers.cr

@@ -317,10 +317,10 @@ def extract_items(nodeset, ucid = nil)
         premium = false
       end
 
-      if node.xpath_node(%q(.//span[contains(text(), "Get YouTube Premium")]))
-        paid = true
-      else
+      if !premium || node.xpath_node(%q(.//span[contains(text(), "Free episode")]))
         paid = false
+      else
+        paid = true
       end
 
       items << SearchVideo.new(