How to make a Youtube downloader using YoutubeExtractor in C#. YoutubeExtractor is a library for .NET, written in C#, that allows to download videos from YouTube and/or extract their audio track
Step 1: Click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "DownloadYoutube" and then click OK
Step 2: Right click on your project select Manage NuGet Packages -> Search youtube extractor -> Install
Step 3: Design youtube download form as below
Step 4: Add code to handle download file
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Windows.Forms;
using YoutubeExtractor;
namespace DownloadYoutube
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
cboResolution.SelectedIndex = 0;
}
private void btnDownload_Click(object sender, EventArgs e)
{
progressBar.Minimum = 0;
progressBar.Maximum = 100;
//Get url video
IEnumerable<VideoInfo> videos = DownloadUrlResolver.GetDownloadUrls(txtUrl.Text);
VideoInfo video = videos.First(p => p.VideoType == VideoType.Mp4 && p.Resolution == Convert.ToInt32(cboResolution.Text));
if (video.RequiresDecryption)
DownloadUrlResolver.DecryptDownloadUrl(video);
//Download video
VideoDownloader downloader = new VideoDownloader(video, Path.Combine(Application.StartupPath + "\\", video.Title + video.VideoExtension));
downloader.DownloadProgressChanged += Downloader_DownloadProgressChanged;
//Create a new thread to download file
Thread thread = new Thread(() => { downloader.Execute(); }) { IsBackground = true };
thread.Start();
}
private void Downloader_DownloadProgressChanged(object sender, ProgressEventArgs e)
{
//Update progressbar
Invoke(new MethodInvoker(delegate ()
{
progressBar.Value = (int)e.ProgressPercentage;
lblPercentage.Text = $"{string.Format("{0:0.##}", e.ProgressPercentage)}%";//C# 6.0
progressBar.Update();
}));
}
}
}
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