Update app.py

app.py

@@ -85,12 +85,12 @@ async def convert_video_task(input_path, downscale, faster, use_mp3, audio_only,
 
     # Compress video without audio
     video_cmd = [
-    'ffmpeg', '-y', '-hwaccel', accel, '-i', input_path
-]
+        'ffmpeg', '-y', '-hwaccel', accel, '-i', input_path
+    ]
+
+    if downscale:
+        video_cmd += ['-vf', 'scale=-2:144']
 
-if downscale:
-    video_cmd += ['-vf', 'scale=-2:144']
-    
     if custom_bitrate:
         video_cmd += ['-b:v', f"{int(video_bitrate)}k"]
     else:
@@ -102,15 +102,26 @@ if downscale:
     await run_subprocess(video_cmd)
 
     if audio_only:
+        # User wants audio only, no merged video
+        # Clean intermediates except audio_output
+        for f in [audio_wav, video_output]:
+            try:
+                os.remove(f)
+            except FileNotFoundError:
+                pass
         return audio_output, None
 
-    # Merge video + audio
+    # Merge audio + video into final file
     merged_output = os.path.join(CONVERTED_FOLDER, f"{uuid.uuid4()}.mp4")
     await run_subprocess([
-        'ffmpeg', '-y', '-i', video_output, '-i', audio_output, '-c', 'copy', merged_output
+        'ffmpeg', '-y',
+        '-i', video_output,
+        '-i', audio_output,
+        '-c', 'copy',
+        merged_output
     ])
 
-    # Cleanup intermediates
+    # Cleanup intermediate files
     for f in [audio_wav, audio_output, video_output]:
         try:
             os.remove(f)