private FFMpegSlideShowTask MakeSlideShow(string file = "slideshow.mp4", decimal slidesPerSecond = 0.5m) { InitSlideFiles(); FileSystemHelper.DeleteIfExists(Path.Combine(dir, file)); var slidetask = new FFMpegSlideShowTask { TargetFile = Path.Combine(dir, file), WorkingFolder = dir, SlidesPerSecond = slidesPerSecond }; FFMpeg.CreateSlideShow(slidetask); return(slidetask); }