protected override void UpdateRenderTarget(SequenceUpdateResult action, TimeSpan time)
        {
            base.UpdateRenderTarget(action, time);
            if (m_image == null)
            {
                return;
            }
            // получаем кадр
            var localTime = time - StartTime;
            var frame     = m_image.GetFrame(localTime);

            if (frame == null)
            {
                return;
            }

            // m_render.SetImageSource(frame.ImageSource);
        }
 protected virtual void UpdateRenderTarget(SequenceUpdateResult action, TimeSpan time)
 {
 }