func main() {
	downloadTestVideo("example.mp4")

	video, err := cinema.Load("example.mp4")
	check(err)

	video.Trim(10*time.Second, 20*time.Second) // trim video from 10 to 20 seconds
	video.SetStart(1 * time.Second)            // trim first second of the video
	video.SetEnd(9 * time.Second)              // keep only up to 9 seconds
	video.SetSize(400, 300)                    // resize video to 400x300
	video.Crop(0, 0, 200, 200)                 // crop rectangle top-left (0,0) with size 200x200
	video.SetSize(400, 400)                    // resize cropped 200x200 video to a 400x400
	video.SetFPS(48)                           // set the output framerate to 48 frames per second
	video.Render("test_output.mov")            // note format conversion by file extension

	// you can also generate the command line instead of applying it directly
	fmt.Println("FFMPEG Command", video.CommandLine("test_output.mov"))
}