https://github.com/Bluegrams/YoutubeDLSharp




            var ytdl = new YoutubeDL();
            // set the path of the youtube-dl and FFmpeg if they're not in PATH or current directory
            ytdl.YoutubeDLPath = "d:\\youtube-dl.exe";
            ytdl.FFmpegPath = "d:\\ffmpeg.exe";
            // optional: set a different download folder
            ytdl.OutputFolder = "d:\\";
            // download a video
          //  var res = await ytdl.RunVideoDownload("https://www.youtube.com/watch?v=XVfZT7CKIb0");
            // the path of the downloaded file
            //string path = res.Data;


            var res = await ytdl.RunVideoDataFetch("https://www.youtube.com/watch?v=XVfZT7CKIb0");
            // get some video information
            VideoData video = res.Data;

            string title = video.Title;
            string uploader = video.Uploader;
            long? views = video.ViewCount;
            // all available download formats
            FormatData[] formats = video.Formats;