OSMF如何获取截图

Question

像这样的普通截图:bitmapData.draw(视频，new Matrix())；但是如何在osmf播放器中获取视频对象呢？我已经尝试在空白图像中绘制mediaPlayerSprite结果

var pictureData:BitmapData = new BitmapData(width, height); 
var x:DisplayObjectTrait = _mediaPlayer.media.getTrait(org.osmf.traits.MediaTraitType.DISPLAY_OBJECT) as DisplayObjectTrait; 
var y:Video = x.displayObject as Video; 
pictureData.draw(m_container, new Matrix());  
var byteArray:ByteArray = new JPEGEncoder(80).encode(pictureData);  
var file:FileReference = new FileReference();  
file.save(byteArray, "pic.jpeg");

Answer 1

要从视频中获取Bitmapdata：

var videoDisplay:VideoDisplay = video.videoDisplay;
var videoObject:Video = videoDisplay.videoObject;
var bitmapData:BitmapData = new BitmapData(videoObject.videoWidth, videoObject.videoHeight, true, 0x000000);