diff --git a/client/src/main/java/ctbrec/ui/settings/RemuxerPaneFactory.java b/client/src/main/java/ctbrec/ui/settings/RemuxerPaneFactory.java
index 6c016986..b0a204d0 100644
--- a/client/src/main/java/ctbrec/ui/settings/RemuxerPaneFactory.java
+++ b/client/src/main/java/ctbrec/ui/settings/RemuxerPaneFactory.java
@@ -11,13 +11,16 @@ public class RemuxerPaneFactory extends AbstractPostProcessingPaneFactory {
 
     @Override
     public Preferences doCreatePostProcessorPane(PostProcessor pp) {
+        var preFfmpegParameters = new SimpleStringProperty(null, Remux.PRE_FFMPEG_ARGS, pp.getConfig().getOrDefault(Remux.PRE_FFMPEG_ARGS, ""));
         var ffmpegParams = new SimpleStringProperty(null, Remux.FFMPEG_ARGS, pp.getConfig().getOrDefault(Remux.FFMPEG_ARGS, "-c:v copy -c:a copy -movflags faststart -y -f mp4"));
         var fileExt = new SimpleStringProperty(null, Remux.FILE_EXT, pp.getConfig().getOrDefault(Remux.FILE_EXT, "mp4"));
+        properties.add(preFfmpegParameters);
         properties.add(ffmpegParams);
         properties.add(fileExt);
 
         return Preferences.of(new MapPreferencesStorage(),
                 Category.of(pp.getName(),
+                Setting.of("FFmpeg pre-input (Experimental)", preFfmpegParameters, "FFmpeg pre-input parameters used when post-processing\nExperimental! DO NOT USE unless you know what you are doing!!!"),
                         Setting.of("FFmpeg parameters", ffmpegParams),
                         Setting.of("File extension", fileExt)
                         )
diff --git a/common/src/main/java/ctbrec/recorder/postprocessing/Remux.java b/common/src/main/java/ctbrec/recorder/postprocessing/Remux.java
index 3994830b..5e661a81 100644
--- a/common/src/main/java/ctbrec/recorder/postprocessing/Remux.java
+++ b/common/src/main/java/ctbrec/recorder/postprocessing/Remux.java
@@ -18,6 +18,7 @@ public class Remux extends AbstractPostProcessor {
 
     private static final Logger LOG = LoggerFactory.getLogger(Remux.class);
 
+    public static final String PRE_FFMPEG_ARGS = "preffmpeg.args";
     public static final String FFMPEG_ARGS =  "ffmpeg.args";
     public static final String FILE_EXT =  "file.ext";
 
@@ -79,9 +80,14 @@ public class Remux extends AbstractPostProcessor {
     }
 
     private String[] prepareCommandline(File inputFile, File remuxedFile) throws IOException {
+        String[] argsPreFfmpeg = getConfig().get(PRE_FFMPEG_ARGS).isEmpty() 
+                               ? new String[] {}  // If empty, create an empty array
+                               : getConfig().get(PRE_FFMPEG_ARGS).split(" ");
         String[] args = getConfig().get(FFMPEG_ARGS).split(" ");
-        String[] argsPlusFile = new String[args.length + 3];
+        String[] argsPlusFile = new String[argsPreFfmpeg.length + args.length + 3];
         int i = 0;
+        System.arraycopy(argsPreFfmpeg, 0, argsPlusFile, i, argsPreFfmpeg.length);
+        i += argsPreFfmpeg.length;
         argsPlusFile[i++] = "-i";
         argsPlusFile[i++] = inputFile.getCanonicalPath();
         System.arraycopy(args, 0, argsPlusFile, i, args.length);
@@ -92,6 +98,10 @@ public class Remux extends AbstractPostProcessor {
     @Override
     public String toString() {
         String s = getName();
+        if(getConfig().containsKey(PRE_FFMPEG_ARGS)) {
+            s = "[" + getConfig().get(PRE_FFMPEG_ARGS) + "] " + s;
+        }
+
         if(getConfig().containsKey(FFMPEG_ARGS)) {
             s += " [" + getConfig().get(FFMPEG_ARGS) + ']';
         }