iPhoneMovieScalingMode.AspectFit 同比适配

iPhoneMovieScalingMode.AspectFit

Description描述

Scale the movie until one dimension fits on the screen exactly.

缩放影片直到一边在屏幕上准确匹配，也就是影片保持同比缩放。

In the other dimension, the region between the edge of the movie and the edge of the screen is filled with a black bar. The aspect ratio of the movie is preserved.

在另一边，影片的边和屏幕的边之间区域被填充为黑色条。影片的比率将被保持。