App crashes when converting images with different height or width

[flyinglionSJ]

Hi,

After changing inside the swiftvideogenertaor, the app crashes when convert images with different size.type = _type
audioURLs = _audios

     if self.type == .single {
       if let _image = VideoGenerator.shouldOptimiseImageForVideo ? _images.first?.resizeImageToVideoSize() : _images.first {
         self.images = [UIImage](repeating: _image, count: 2)
       }
     } else {
       
       for _image in _images {
          autoreleasepool {
            VideoGenerator.scaleHeight = CGFloat(Float(_image.getCropRatio()))
            let  height = VideoGenerator.scaleHeight
            if let imageData = _image.scaleImageToSize(newSize: CGSize(width: VideoGenerator.videoImageWidthForMultipleVideoGeneration, height: Int(CGFloat(VideoGenerator.videoImageWidthForMultipleVideoGeneration) * CGFloat(VideoGenerator.scaleHeight!))))?.pngData() {
              datasImages.append(imageData)
            }
          }
        }
        
        datasImages.forEach {
          if let imageData = $0, let image = UIImage(data: imageData, scale: UIScreen.main.scale) {
            self.images.append(image)
          }
        }
       
       datasImages.removeAll()
     }