Update app.py

app.py

@@ -117,7 +117,7 @@ def process_video(radio, video, target_language):
         subprocess.run(cmd, shell=True)
     else:
         # Merge audio with the original video without running Wav2Lip
-        cmd = f"ffmpeg -i {video_path} -i {run_uuid}_output_synth.wav -c:v copy -c:a aac -strict experimental {run_uuid}_output_video.mp4"
+        cmd = f"ffmpeg -i {video_path} -i {run_uuid}_output_synth.wav -c:v copy -c:a aac -strict experimental -map 0:v:0 -map 1:a:0 {run_uuid}_output_video.mp4"
         subprocess.run(cmd, shell=True)
 
     if not os.path.exists(f"{run_uuid}_output_video.mp4"):