fix(api): convert to "RGB" if image mode is "RGBA"

            image.save(output_bytes, format="PNG", pnginfo=(metadata if use_metadata else None), quality=opts.jpeg_quality)

        elif opts.samples_format.lower() in ("jpg", "jpeg", "webp"):

            if image.mode == "RGBA":

                image = image.convert("RGB")

            parameters = image.info.get('parameters', None)

            exif_bytes = piexif.dump({

                "Exif": { piexif.ExifIFD.UserComment: piexif.helper.UserComment.dump(parameters or "", encoding="unicode") }