void saveGif(String fileName, Iterable<Image> frames, {double fps = 24}) {
    final int frameDuration = (100 / fps).round();
    final GifEncoder encoder = GifEncoder(delay: 0, repeat: 0);

    for (Image frame in frames) {
      encoder.addFrame(frame, duration: frameDuration);
    }
    final Uint8List? image = encoder.finish();

    if (image != null) {
      File(fileName).writeAsBytesSync(image);
    } else {
      throw Exception('Failed to encode GIF.');
    }
}