diff --git a/lib/render_workers/blender_worker.py b/lib/render_workers/blender_worker.py
index ba292e0..73d62c8 100644
--- a/lib/render_workers/blender_worker.py
+++ b/lib/render_workers/blender_worker.py
@@ -61,6 +61,11 @@ class BlenderRenderWorker(BaseRenderWorker):
         # all frames or single
         cmd.extend(['-a'] if self.render_all_frames else ['-f', str(self.frame_to_render)])
 
+        # Convert raw args from string if available
+        raw_args = self.get_raw_args()
+        if raw_args:
+            cmd.extend(raw_args)
+
         return cmd
 
     def _parse_stdout(self, line):
diff --git a/lib/render_workers/ffmpeg_worker.py b/lib/render_workers/ffmpeg_worker.py
index 36aa102..fee773f 100644
--- a/lib/render_workers/ffmpeg_worker.py
+++ b/lib/render_workers/ffmpeg_worker.py
@@ -44,9 +44,9 @@ class FFMPEGRenderWorker(BaseRenderWorker):
             cmd.extend(['-vf', f"scale={self.args['x_resolution']}:{self.args['y_resolution']}"])
 
         # Convert raw args from string if available
-        raw_args = self.args.get('raw', None)
+        raw_args = self.get_raw_args()
         if raw_args:
-            cmd.extend(raw_args.split(' '))
+            cmd.extend(raw_args)
 
         # Close with output path
         cmd.append(self.output_path)
diff --git a/lib/render_workers/render_worker.py b/lib/render_workers/render_worker.py
index c78241b..4ee6cb6 100644
--- a/lib/render_workers/render_worker.py
+++ b/lib/render_workers/render_worker.py
@@ -99,18 +99,22 @@ class BaseRenderWorker(object):
 
     def generate_subprocess(self):
         # Convert raw args from string if available and catch conflicts
-        cmd = self.generate_worker_subprocess()
-        raw_args = self.args.get('raw', None)
-        if raw_args:
+        generated_args = self.generate_worker_subprocess()
+        generated_args_flags = [x for x in generated_args if x.startswith('-')]
+        if len(generated_args_flags) != len(set(generated_args_flags)):
+            msg = "Cannot generate subprocess - Multiple arg conflicts detected"
+            logger.error(msg)
+            logger.debug(f"Generated args for subprocess: {generated_args}")
+            raise ValueError(msg)
+        return generated_args
+
+    def get_raw_args(self):
+        raw_args_string = self.args.get('raw', None)
+        raw_args = None
+        if raw_args_string:
             import shlex
-            args_split = shlex.split(raw_args)
-            flags = [x for x in args_split if x.startswith('-')]
-            conflict = any(element in flags for element in args_split)
-            if conflict:
-                raise ValueError("Custom args conflicts set parameters")
-            else:
-                cmd.extend(args_split)
-        return cmd
+            raw_args = shlex.split(raw_args_string)
+        return raw_args
 
     def generate_worker_subprocess(self):
         raise NotImplementedError("generate_worker_subprocess not implemented")