public void LoadFrames(Action frameLoadedCallback)
{
HdPakHandler.LoadFrames(this, frameLoadedCallback);
}
public void LoadPreviewImage()
{
var firstFrame = HdPakFrames.OrderBy(kv => kv.Key).Select(kc => kc.Value).FirstOrDefault();
PreviewImage = HdPakHandler.GetPreviewImage(firstFrame);
}