diff --git a/rffmpeg b/rffmpeg
index 1e7c862..db28164 100755
--- a/rffmpeg
+++ b/rffmpeg
@@ -210,6 +210,7 @@ def load_config():
     # Set the database path
     config["db_path"] = config["state_dir"] + "/rffmpeg.db"
 
+
     # Set a list of special flags that cause different behaviour
     config["special_flags"] = [
         "-version",
@@ -218,7 +219,9 @@ def load_config():
         "-hwaccels",
         "-filters",
         "-h",
-    ]
+        "-muxers",
+        "-fp_format",
+    ] + config_commands.get("special_flags", [])
 
     # Set the current PID of this process
     config["current_pid"] = os.getpid()