diff --git a/src/zutil/osal/app/ffmpeg/FFmpegInput.java b/src/zutil/osal/app/ffmpeg/FFmpegInput.java
index 873851c..f25d0a8 100644
--- a/src/zutil/osal/app/ffmpeg/FFmpegInput.java
+++ b/src/zutil/osal/app/ffmpeg/FFmpegInput.java
@@ -24,6 +24,12 @@
 
 package zutil.osal.app.ffmpeg;
 
+import zutil.StringUtil;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 /**
  * Class includes data related to a single input into FFmpeg
  */
@@ -34,6 +40,7 @@ public class FFmpegInput {
     private Float duration;
     private Float positionStart;
     private Float positionEnd;
+    private List<String> additionalArgs = new ArrayList<>();
 
     // Audio Options
 
@@ -77,6 +84,13 @@ public class FFmpegInput {
         this.positionEnd = position;
     }
 
+    /**
+     * Add additional args that may not be supported by the API, these values will be inserted to the command line as is.
+     */
+    public void addAdditionalArg(String... args) {
+        additionalArgs.addAll(Arrays.asList(args));
+    }
+
     // ----------------------------------------------------
     // Audio Options
     // ----------------------------------------------------
@@ -135,6 +149,7 @@ public class FFmpegInput {
         if (!subtitleEnabled)
             command.append(" -sn");
 
+        command.append(StringUtil.join(" ", additionalArgs));
         command.append(" -i ").append(input);
         return command.toString().trim();
     }
diff --git a/src/zutil/osal/app/ffmpeg/FFmpegOutput.java b/src/zutil/osal/app/ffmpeg/FFmpegOutput.java
index c985a2d..8c86378 100644
--- a/src/zutil/osal/app/ffmpeg/FFmpegOutput.java
+++ b/src/zutil/osal/app/ffmpeg/FFmpegOutput.java
@@ -24,10 +24,15 @@
 
 package zutil.osal.app.ffmpeg;
 
+import zutil.StringUtil;
 import zutil.osal.app.ffmpeg.FFmpegConstants.FFmpegAudioCodec;
 import zutil.osal.app.ffmpeg.FFmpegConstants.FFmpegSubtitleCodec;
 import zutil.osal.app.ffmpeg.FFmpegConstants.FFmpegVideoCodec;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 /**
  * Class includes data related to a single output from FFmpeg
  */
@@ -40,6 +45,7 @@ public class FFmpegOutput {
     private Float positionEnd;
     private Long fileSize;
     private Integer encodingPass;
+    private List<String> additionalArgs = new ArrayList<>();
 
     // Video Options
 
@@ -115,6 +121,13 @@ public class FFmpegOutput {
         this.encodingPass = pass;
     }
 
+    /**
+     * Add additional args that may not be supported by the API, these values will be inserted to the command line as is.
+     */
+    public void addAdditionalArg(String... args) {
+        additionalArgs.addAll(Arrays.asList(args));
+    }
+
     // ----------------------------------------------------
     // Video Options
     // ----------------------------------------------------
@@ -336,6 +349,7 @@ public class FFmpegOutput {
         if (!subtitleEnabled)
             command.append(" -sn");
 
+        command.append(StringUtil.join(" ", additionalArgs));
         command.append(' ').append(output);
         return command.toString().trim();
     }