diff --git a/FFMpegCore/FFMPEG/Argument/Atoms/ConstantRateFactorArgument.cs b/FFMpegCore/FFMPEG/Argument/Atoms/ConstantRateFactorArgument.cs
index a753e78..d948030 100644
--- a/FFMpegCore/FFMPEG/Argument/Atoms/ConstantRateFactorArgument.cs
+++ b/FFMpegCore/FFMPEG/Argument/Atoms/ConstantRateFactorArgument.cs
@@ -15,24 +15,6 @@ public ConstantRateFactorArgument(int crf) : base(crf)
             }
         }
 
-        public override string GetStringValue()
-        {
-            return $"-crf {Value} ";
-        }
-    }
-    /// <summary>
-    /// Constant Rate Factor (CRF) argument
-    /// </summary>
-    public class Variable : Argument<int>
-    {
-        public ConstantRateFactorArgument(int crf) : base(crf)
-        {
-            if (crf < 0 || crf > 63)
-            {
-                throw new ArgumentException("Argument is outside range (0 - 63)", nameof(crf));
-            }
-        }
-
         public override string GetStringValue()
         {
             return $"-crf {Value} ";