libvideo (aka VideoLibrary) is a modern .NET library for downloading YouTube videos. It is portable to most platforms and is very lightweight.

• Documentation
• Example Application
• Fast Downloader with Chunks

You can grab a copy of the library on NuGet by running:

Install-Package VideoLibrary

Alternatively, you can try building the repo if you like your assemblies extra-fresh.

• NET ve .NET Core | 1.0, 1.1, 2.0, 2.1, 2.2, 3.0, 3.1, 5.0, 6.0, 7.0
• .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1, 4.8.2
• Mono | 4.6, 5.4, 6.4
• Xamarin.iOS | 10.0, 10.14, 12.16
• Xamarin.Mac | 3.0, 3.8, 5.16
• Xamarin.Android | 7.0, 8.0, 10.0
• Universal Windows Platform | 8.0, 8.1, 10.0, 10.0.16299, TBD
• Unity | 2018

Here's a small sample to help you get familiar with libvideo:

using VideoLibrary;

void SaveVideoToDisk(string link)
{
    var youTube = YouTube.Default; // starting point for YouTube actions
    var video = youTube.GetVideo(link); // gets a Video object with info about the video
    File.WriteAllBytes(@"C:\" + video.FullName, video.GetBytes());
}

Or, if you use Visual Basic:

Imports VideoLibrary

Sub SaveVideoToDisk(ByVal link As String)
     Dim video = YouTube.Default.GetVideo(link)
     File.WriteAllBytes("C:\" & video.FullName, video.GetBytes())
End Sub

If you'd like to check out some more of our features, take a look at our docs. You can also refer to our example application (named Valks, yes, I know, it's a silly name) if you're looking for a more comprehensive sample.

libvideo is licensed under the BSD 2-clause license.