Size

interface Size {
  size?: {
    // defaults to undefined
    format?: 'fill' | 'fit' | 'stretch'

    // number of pixels,
    // defaults to original media height or composition height
    height?: number

    // ratio of size increase or decrease, 1 is normal
    scale?: number

    // number of pixels,
    // defaults to original media width or composition width
    width?: number
  }
}