new method for bypassing age restriction (#2996)

src/invidious/videos.cr

@@ -585,7 +585,7 @@ struct Video
 
   def allowed_regions
     info
-      .dig("microformat", "playerMicroformatRenderer", "availableCountries")
+      .dig?("microformat", "playerMicroformatRenderer", "availableCountries")
       .try &.as_a.map &.as_s || [] of String
   end
 
@@ -876,7 +876,7 @@ def extract_video_info(video_id : String, proxy_region : String? = nil, context_
 
   client_config = YoutubeAPI::ClientConfig.new(proxy_region: proxy_region)
   if context_screen == "embed"
-    client_config.client_type = YoutubeAPI::ClientType::WebScreenEmbed
+    client_config.client_type = YoutubeAPI::ClientType::TvHtml5ScreenEmbed
   end
 
   player_response = YoutubeAPI.player(video_id: video_id, params: "", client_config: client_config)

src/invidious/yt_backend/youtube_api.cr

@@ -14,6 +14,7 @@ module YoutubeAPI
     Android
     AndroidEmbeddedPlayer
     AndroidScreenEmbed
+    TvHtml5ScreenEmbed
   end
 
   # List of hard-coded values used by the different clients
@@ -60,6 +61,12 @@ module YoutubeAPI
       api_key: "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8",
       screen:  "EMBED",
     },
+    ClientType::TvHtml5ScreenEmbed => {
+      name:    "TVHTML5_SIMPLY_EMBEDDED_PLAYER",
+      version: "2.0",
+      api_key: "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8",
+      screen:  "EMBED",
+    },
   }
 
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