diff --git a/.github/workflows/Build&Release.yml b/.github/workflows/Build&Release.yml
index 47a5aa0..72f6aab 100644
--- a/.github/workflows/Build&Release.yml
+++ b/.github/workflows/Build&Release.yml
@@ -1,9 +1,6 @@
 name: Build with PyInstaller and Create Release
 
 on:
-  push:
-    branches:
-      - master
   pull_request:
     branches:
       - master
diff --git a/Smelt.py b/Smelt.py
index e34b034..963c680 100644
--- a/Smelt.py
+++ b/Smelt.py
@@ -836,7 +836,10 @@ def handle_audio_operations(self):
         Handle audio processing operations.
         """
         self.construct_audio_commands()
-        self.execute_ffmpeg_commands(['ffmpeg_lossless_audio_cmd', 'ffmpeg_audio_cmd'])
+        if self.mezzaninfilCheckBox.isChecked():
+            self.execute_ffmpeg_commands(['ffmpeg_lossless_audio_cmd', 'ffmpeg_audio_cmd'])
+        else:
+            self.execute_ffmpeg_commands(['ffmpeg_audio_cmd'])
 
     def construct_dpx_commands(self):
         """
@@ -885,6 +888,9 @@ def construct_dpx_commands(self):
         """
         base_filename = os.path.basename(self.images_path)
         prefix = re.match(r'^\D*', base_filename).group()
+
+        start_number = extract_number(self.images_path)
+
         ffmpeg_input_pattern = os.path.join(self.folder_path, '{}%06d.dpx'.format(prefix))
 
         self.ffmpeg_base = [
@@ -897,7 +903,7 @@ def construct_dpx_commands(self):
             '-f', 'image2',
             '-vsync', '0',
             '-framerate', self.fps,
-            '-start_number', '0',
+            '-start_number', str(start_number),
             '-i', ffmpeg_input_pattern,
         ]