ffmpeg转换字符动画

using FFmpeg.NET;
using System;
using System.DrawingCore;
using System.Text;
using System.Threading;

namespace VideoToChar
{
    class Program
    {
        static void Main(string[] args)
        {
            //Console.BackgroundColor = ConsoleColor.White;
            //Console.ForegroundColor = ConsoleColor.Black;
            Console.SetBufferSize(Console.WindowWidth, Console.WindowHeight);
            //Console.SetBufferSize(1800, 800);


            var inputFile = new MediaFile(@"d:\ffmpeg\1.mp4");
            var outputFile = new MediaFile(@"d:\ffmpeg\1.jpg");

            var ffmpeg = new Engine(@"d:\ffmpeg\ffmpeg.exe");

            var fls = System.IO.Directory.GetFiles(@"d:\ffmpeg\img\");
            if (fls.Length < 1)
            {
                try
                {
                    double ss = 0.0;
                    while (ss < 10)
                    {
                        // 保存位于视频第 s 秒的帧。
                        var options = new ConversionOptions { Seek = TimeSpan.FromSeconds(ss) };

                        var url = $@"d:\ffmpeg\img\{ss}.jpg";
                        var img = new MediaFile(url);

                        ffmpeg.GetThumbnailAsync(inputFile, img, options).Wait();

                        //ConvertToChar(new Bitmap(url), 3, 6);

                        ss += (1.0 / 24);
                    }
                }
                catch (Exception)
                {
                    Console.ReadKey();
                }
            }


            foreach (var item in System.IO.Directory.GetFiles(@"d:\ffmpeg\img\"))
            {
                ConvertToChar(new Bitmap(item), 2, 3);
                Thread.Sleep(1000 / 24);
            }

            Console.ReadKey();
        }

        /// <summary>
        /// 将图片转换为字符画
        /// </summary>
        /// <param name="bitmap">Bitmap类型的对象</param>
        /// <param name="WAddNum">宽度缩小倍数（如果输入3，则以1/3倍的宽度显示）</param>
        /// <param name="HAddNum">高度缩小倍数（如果输入3，则以1/3倍的高度显示）</param>
        public static void ConvertToChar(Bitmap bitmap, int WAddNum, int HAddNum)
        {
            StringBuilder sb = new StringBuilder();
            string replaceChar = "@*#$%XB0H?OC7>+v=~^:_-'`. ";
            for (int i = 0; i < bitmap.Height; i += HAddNum)
            {
                for (int j = 0; j < bitmap.Width; j += WAddNum)
                {
                    //获取当前点的Color对象
                    Color c = bitmap.GetPixel(j, i);
                    //计算转化过灰度图之后的rgb值（套用已有的计算公式就行）
                    int rgb = (int)(c.R * .3 + c.G * .59 + c.B * .11);
                    //计算出replaceChar中要替换字符的index
                    //所以根据当前灰度所占总rgb的比例(rgb值最大为255，为了防止超出索引界限所以/256.0)
                    //（肯定是小于1的小数）乘以总共要替换字符的字符数，获取当前灰度程度在字符串中的复杂程度
                    int index = (int)(rgb / 256.0 * replaceChar.Length);
                    //追加进入sb
                    sb.Append(replaceChar[index]);
                }
                //添加换行
                sb.Append("\r\n");
            }
            Console.Clear();
            Console.Write(sb.ToString());
        }

    }
}