Update app.py

app.py

@@ -75,14 +75,16 @@ async def convert_video_task(input_path, downscale, faster, use_mp3, audio_only,
         ffmpeg_video_cmd = [
             'ffmpeg', '-y', '-hwaccel', accel, '-i', input_path
         ]
-        if custom_bitrate:
+    
+    if custom_bitrate:
             ffmpeg_video_cmd += ['-b:v', f"{int(video_bitrate)}k"]
         else:
             ffmpeg_video_cmd += video_base_opts
         
-        if faster:
-                ffmpeg_video_cmd.extend(['-preset', 'ultrafast'])
-        ffmpeg_video_cmd += [
+    if faster:
+             ffmpeg_video_cmd.extend(['-preset', 'ultrafast'])
+    
+    ffmpeg_video_cmd += [
             '-c:a', 'libmp3lame', '-b:a', '8k', '-ar', '24000', '-ac', '1',
             output_video
         ]