如何翻转flash.media.Video？

import flash.media.Video;

var video:Video = new Video(320, 240);
video.scaleX = -1; // 水平翻转
video.scaleY = -1; // 垂直翻转

import flash.media.Video;
import flash.geom.Matrix;

var video:Video = new Video(320, 240);
var matrix:Matrix = new Matrix();
matrix.scale(1, -1); // 垂直翻转
video.transform.matrix = matrix;

import flash.media.Video;
import flash.display.BitmapData;

var video:Video = new Video(320, 240);
var bitmapData:BitmapData = new BitmapData(video.width, video.height);
bitmapData.draw(video);
bitmapData.draw(video, new Matrix(1, 0, 0, -1, 0, video.height)); // 垂直翻转