我要视频文件缩略图。获取视频路径并转换为图像。然后转换为bmp,并将bmp保存为图像文件。如果可以的话,请告诉我一种方法。
private void add_Video_Image(string sFullname_Path_of_Video)
{
//*create mediaplayer in memory and jump to position
MediaPlayer mediaPlayer = new MediaPlayer();
mediaPlayer.MediaOpened += new EventHandler(mediaplayer_OpenMedia);
mediaPlayer.ScrubbingEnabled = true;
mediaPlayer.Open(new Uri(sFullname_Path_of_Video));
mediaPlayer.Position = TimeSpan.FromSeconds(0);
}
private void mediaplayer_OpenMedia(object sender, EventArgs e)
{
MediaPlayer mediaPlayer = sender as MediaPlayer;
DrawingVisual drawingVisual = new DrawingVisual();
DrawingContext drawingContext = drawingVisual.RenderOpen();
drawingContext.DrawVideo(mediaPlayer, new Rect(0, 0, 160, 100));
drawingContext.Close();
double dpiX = 1 / 200;
double dpiY = 1 / 200;
RenderTargetBitmap bmp = new RenderTargetBitmap(160, 100, dpiX, dpiY, PixelFormats.Pbgra32);
bmp.Render(drawingVisual);
Image newImage = new Image();
newImage.Source = bmp;
newImage.Stretch = Stretch.Uniform;
newImage.Height = 100;
//save bmp to image
}
答案 0 :(得分:-1)
请检查此链接。它包含您问题的答案:Easiest way of saving wpf Image control to a file 您可以先进行保存,然后再将“ RenderTargetBitmap”设置为“图像控件”。