Update app.py

app.py

@@ -17,14 +17,14 @@ def merge_videos(video1_path, video2_path):
     desired_height = 1280
     desired_width = 720
     
-    # Comando ffmpeg revisado para usar a codificação NVENC
+    # Comando ffmpeg ajustado para um meio termo entre qualidade e velocidade
     ffmpeg_cmd = (
-        f'ffmpeg -hwaccel cuda -i "{video1_path}" -i "{video2_path}" '
+        f'ffmpeg -i "{video1_path}" -i "{video2_path}" '
         f'-filter_complex '
-        f'"[0:v]scale_cuda=-2:{desired_height}:force_original_aspect_ratio=decrease,scale_cuda={desired_width}:{desired_height}:force_original_aspect_ratio=increase,crop={desired_width}:{desired_height}[v0];'
-        f'[1:v]scale_cuda=-2:{desired_height}:force_original_aspect_ratio=decrease,scale_cuda={desired_width}:{desired_height}:force_original_aspect_ratio=increase,crop={desired_width}:{desired_height}[v1];'
+        f'"[0:v]scale={desired_width}:{desired_height}:force_original_aspect_ratio=decrease,pad={desired_width}:{desired_height}:(ow-iw)/2:(oh-ih)/2[v0];'
+        f'[1:v]scale={desired_width}:{desired_height}:force_original_aspect_ratio=decrease,pad={desired_width}:{desired_height}:(ow-iw)/2:(oh-ih)/2[v1];'
         f'[v0][v1]vstack=inputs=2[v]" '
-        f'-map "[v]" -c:v h264_nvenc -preset fast {output_filename}'
+        f'-map "[v]" -c:v libx264 -preset medium -crf 21 {output_filename}'
     )
     
     subprocess.run(ffmpeg_cmd, shell=True, check=True)