"William Johnston" <wi******@tenbase2.comwrote:
>
Still getting black thumbnails after setting BeginTime for MediaTimeLine object.
Here is my modifed thumbnail creator code:
private void CreateThumbnail(string file, string outputDir)
{
try
{
MediaPlayer mp = new MediaPlayer();
MediaTimeline mt = new MediaTimeline(new Uri(file));
mt.BeginTime = new TimeSpan(00, 00, 02);
MediaClock mc = mt.CreateClock();
string beginTime = null;
if (debug)
{
beginTime = mc.Timeline.BeginTime.ToString();
System.Console.WriteLine("beginTime: [" + beginTime + "]");
}
mp.Clock = mt.CreateClock();
if (debug)
{
beginTime = mp.Clock.Timeline.BeginTime.ToString();
System.Console.WriteLine("beginTime: [" + beginTime + "]");
}
RenderTargetBitmap rtb = new RenderTargetBitmap(130, 92, 1 / 200, 1 / 200, PixelFormats.Pbgra32);
DrawingVisual dv = new DrawingVisual();
DrawingContext dc = dv.RenderOpen();
RectAnimation ra = new RectAnimation();
dc.DrawVideo(mp, new Rect(0, 0, 130, 92));
dc.Close();
rtb.Render(dv);
string filename = GetFileName(file);
//create the output filename
object[] formatParams = new object[2];
formatParams[0] = outputDir;
formatParams[1] = filename;
string outputFileName = null;
outputFileName = string.Format("{0}\\tn_{1}.bmp", formatParams);
BmpBitmapEncoder encoder = new BmpBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(rtb));
using (FileStream writer = new FileStream(outputFileName, FileMode.Create))
{
System.Console.WriteLine("Saving [{0}]", outputFileName);
encoder.Save(writer);
}
}
catch (Exception e)
{
System.Console.WriteLine("CreateThumbnail: " + e.Message);
System.Environment.Exit(1);
}
}
Thanks,
William Johnston