using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using AForge.Video.FFMPEG;
using AForge.Imaging.Filters;

namespace FrameSub
{
    class Program
    {
        static void Main(string[] args)
        {
            string path = System.IO.Directory.GetCurrentDirectory() + "/1.mp4";
            VideoFileReader reader = new VideoFileReader();
            VideoFileWriter writer = new VideoFileWriter();

            reader.Open(path);
            writer.Open(path, reader.Width, reader.Height, reader.FrameRate, VideoCodec.MPEG4);
            Difference diff = new Difference(reader.ReadVideoFrame());
            for (int i = 1; i < reader.FrameCount; i++)
            {
                Bitmap frame = reader.ReadVideoFrame();
                Bitmap result = diff.Apply(frame);
                writer.WriteVideoFrame(result);

                diff.OverlayImage = frame;
                result.Dispose();
            }
            writer.Close();
            reader.Close();
            Console.ReadKey();
        }
    }
}