Make Every Class Internal

Util/FFmpegVideoBGPlayer.cs

@@ -9,7 +9,7 @@ using FFmpeg.AutoGen;
 namespace ADOFAIRenderer.Util
 {
     // ReSharper disable once InconsistentNaming
-    public class FFmpegVideoBGPlayer : MonoBehaviour
+    internal class FFmpegVideoBGPlayer : MonoBehaviour
     {
         private static readonly int YTex = Shader.PropertyToID("_YTex");
         private static readonly int UVTex = Shader.PropertyToID("_UVTex");