Working and tested python function to make a landscape image from any resolution by adding background

 def makeLandscapeImage(normal_path, output_path, background_path = "bg.png"):

    from PIL import Image

    try:

        # Load images

        background_img = Image.open(background_path)

        normal_img = Image.open(normal_path)

        # Check if normal image has transparency before resizing

        has_transparency = normal_img.mode in ("RGBA", "P")

        # Use LANCZOS filter for scaling (or another supported PIL filter)

        normal_img = normal_img.resize((

            int((background_img.height/normal_img.height ) * normal_img.width),

            background_img.height

        ), Image.LANCZOS)

        # Preserve transparency if necessary

        if has_transparency:

            mask = normal_img.convert("L").point(lambda p: 0 if p == 0 else 255)  # Create binary transparency mask

            normal_img = normal_img.convert("RGBA").copy()  # Convert to RGBA with alpha channel

            background_img.paste(normal_img, (0, 0), mask)  # Use mask for transparency

        else:

            background_img.paste(normal_img, ((background_img.width - normal_img.width) // 2, 0))  # Center horizontally

        # Save the image

        background_img.save(output_path)

        print(f"Successfully overlaid images and saved to {output_path}")

        return output_path

    except FileNotFoundError:

        print("Error: One or both image files were not found.")

        return False

    except (ImportError, ValueError) as e:

        print(f"Error occurred: {e}")

        return False