diff --git a/FFMpegCore/FFMPEG/Argument/Atoms/ForceFormatArgument.cs b/FFMpegCore/FFMPEG/Argument/Atoms/ForceFormatArgument.cs
index 700d320..c2322e0 100644
--- a/FFMpegCore/FFMPEG/Argument/Atoms/ForceFormatArgument.cs
+++ b/FFMpegCore/FFMPEG/Argument/Atoms/ForceFormatArgument.cs
@@ -5,16 +5,17 @@ namespace FFMpegCore.FFMPEG.Argument
     /// <summary>
     /// Represents force format parameter
     /// </summary>
-    public class ForceFormatArgument : Argument<VideoCodec>
+    public class ForceFormatArgument : Argument<string>
     {
         public ForceFormatArgument() { }
+        public ForceFormatArgument(string format) : base(format) { }
 
-        public ForceFormatArgument(VideoCodec value) : base(value) { }
+        public ForceFormatArgument(VideoCodec value) : base(value.ToString().ToLower()) { }
 
         /// <inheritdoc/>
         public override string GetStringValue()
         {
-            return $"-f {Value.ToString().ToLower()}";
+            return $"-f {Value}";
         }
     }
 }
diff --git a/FFMpegCore/FFMPEG/Argument/Atoms/VideoCodecArgument.cs b/FFMpegCore/FFMPEG/Argument/Atoms/VideoCodecArgument.cs
index e8296ab..ac35f35 100644
--- a/FFMpegCore/FFMPEG/Argument/Atoms/VideoCodecArgument.cs
+++ b/FFMpegCore/FFMPEG/Argument/Atoms/VideoCodecArgument.cs
@@ -5,15 +5,17 @@ namespace FFMpegCore.FFMPEG.Argument
     /// <summary>
     /// Represents video codec parameter
     /// </summary>
-    public class VideoCodecArgument : Argument<VideoCodec>
+    public class VideoCodecArgument : Argument<string>
     {
         public int Bitrate { get; protected set; } = 0;
 
         public VideoCodecArgument() { }
 
-        public VideoCodecArgument(VideoCodec value) : base(value) { }
+        public VideoCodecArgument(string codec) : base(codec) { }
 
-        public VideoCodecArgument(VideoCodec value, int bitrate) : base(value)
+        public VideoCodecArgument(VideoCodec value) : base(value.ToString().ToLower()) { }
+
+        public VideoCodecArgument(VideoCodec value, int bitrate) : base(value.ToString().ToLower())
         {
             Bitrate = bitrate;
         }
@@ -21,7 +23,7 @@ public VideoCodecArgument(VideoCodec value, int bitrate) : base(value)
         /// <inheritdoc/>
         public override string GetStringValue()
         {
-            var video = $"-c:v {Value.ToString().ToLower()} -pix_fmt yuv420p";
+            var video = $"-c:v {Value} -pix_fmt yuv420p";
 
             if (Bitrate != default)
             {