ios swift - uiimage数组到视频中断和翻转

Question

我在此链接https://github.com/justinlevi/imagesToVideo中修改了时间推移构建器类中的一些代码，以接收图像数组而不是网址。

就拍摄图像和制作视频而言，一切似乎都很好;但是，我在视频中显示图像的方式存在一些问题。

这是图像的真实外观以及它们在iphone上的外观：

我觉得问题出在fillPixelBufferFromImage方法中：

func fillPixelBufferFromImage(image: UIImage, pixelBuffer: CVPixelBuffer, contentMode:UIViewContentMode){

    CVPixelBufferLockBaseAddress(pixelBuffer, 0)

    let data = CVPixelBufferGetBaseAddress(pixelBuffer)
    let rgbColorSpace = CGColorSpaceCreateDeviceRGB()
    let context = CGBitmapContextCreate(data, Int(self.outputSize.width), Int(self.outputSize.height), 8, CVPixelBufferGetBytesPerRow(pixelBuffer), rgbColorSpace, CGImageAlphaInfo.PremultipliedFirst.rawValue)

    CGContextClearRect(context, CGRectMake(0, 0, CGFloat(self.outputSize.width), CGFloat(self.outputSize.height)))

    let horizontalRatio = CGFloat(self.outputSize.width) / image.size.width
    let verticalRatio = CGFloat(self.outputSize.height) / image.size.height
    var ratio: CGFloat = 1

//    print("horizontal ratio \(horizontalRatio)")
//    print("vertical ratio \(verticalRatio)")
//    print("ratio \(ratio)")
//    print("Image Width -  \(image.size.width). Image Height - \(image.size.height)")


    switch(contentMode) {
    case .ScaleAspectFill:
      ratio = max(horizontalRatio, verticalRatio)
    case .ScaleAspectFit:
      ratio = min(horizontalRatio, verticalRatio)
    default:
      ratio = min(horizontalRatio, verticalRatio)
    }

    //print("after ratio \(ratio)")


    let newSize:CGSize = CGSizeMake(image.size.width * ratio, image.size.height * ratio)

    let x = newSize.width < self.outputSize.width ? (self.outputSize.width - newSize.width) / 2 : 0
    let y = newSize.height < self.outputSize.height ? (self.outputSize.height - newSize.height) / 2 : 0

    //print("x \(x)")
    //print("y \(y)")

    CGContextDrawImage(context, CGRectMake(x, y, newSize.width, newSize.height), image.CGImage)

    CVPixelBufferUnlockBaseAddress(pixelBuffer, 0)
  }

请指教。谢谢

编辑：有人可以帮忙吗？我非常坚持让这些图像在视频中显示，就像他们拍摄时一样。谢谢你的帮助