YoutubeExtractor is a library for .NET, written in C#, that allows to download videos from YouTube and/or extract their audio track with varius options regarding the audio quality. You can also directly stream audio only of the video.
The YouTube URL-extraction code is licensed under the MIT License
Get the download URLs
// Our test youtube link
string link = "insert youtube link";
/*
* Get the available video formats.
* We'll work with them in the video and audio download examples.
*/
IEnumerable<VideoInfo> videoInfos = DownloadUrlResolver.GetDownloadUrls(link);Download the video
/*
* Select the first .mp4 video with 360p resolution
*/
VideoInfo video = videoInfos
.First(info => info.VideoType == VideoType.Mp4 && info.Resolution == 360);
/*
* If the video has a decrypted signature, decipher it
*/
if (video.RequiresDecryption)
{
DownloadUrlResolver.DecryptDownloadUrl(video);
}
/*
* Create the video downloader.
* The first argument is the video to download.
* The second argument is the path to save the video file.
*/
var videoDownloader = new VideoDownloader(video, Path.Combine("D:/Downloads", video.Title + video.VideoExtension));
// Register the ProgressChanged event and print the current progress
videoDownloader.DownloadProgressChanged += (sender, args) => Console.WriteLine(args.ProgressPercentage);
/*
* Execute the video downloader.
* For GUI applications note, that this method runs synchronously.
*/
videoDownloader.Execute();Download the audio track
/*
* We want the first extractable video with the highest audio quality.
*/
VideoInfo video = videoInfos
.Where(info => info.CanExtractAudio)
.OrderByDescending(info => info.AudioBitrate)
.First();
/*
* If the video has a decrypted signature, decipher it
*/
if (video.RequiresDecryption)
{
DownloadUrlResolver.DecryptDownloadUrl(video);
}
/*
* Create the audio downloader.
* The first argument is the video where the audio should be extracted from.
* The second argument is the path to save the audio file.
*/
var audioDownloader = new AudioDownloader(video, Path.Combine("D:/Downloads", video.Title + video.AudioExtension));
// Register the progress events. We treat the download progress as 85% of the progress and the extraction progress only as 15% of the progress,
// because the download will take much longer than the audio extraction.
audioDownloader.DownloadProgressChanged += (sender, args) => Console.WriteLine(args.ProgressPercentage * 0.85);
audioDownloader.AudioExtractionProgressChanged += (sender, args) => Console.WriteLine(85 + args.ProgressPercentage * 0.15);
/*
* Execute the audio downloader.
* For GUI applications note, that this method runs synchronously.
*/
audioDownloader.Execute();Stream the audio track
/*
* We want the first extractable video with the highest audio quality.
*/
VideoInfo video = videoInfos
.Where(info => info.CanExtractAudio)
.OrderByDescending(info => info.AudioBitrate)
.First();
/*
* If the video has a decrypted signature, decipher it
*/
if (video.RequiresDecryption)
{
DownloadUrlResolver.DecryptDownloadUrl(video);
}
/*
* Create the audio streaner.
* The first argument is the video where the audio should be streamed from.
*/
var audioStreamer = new AduioStreamer(video);
// Register the progress events
audioStreamer.StreamStarted += (sender, args) => Console.WriteLine("Audio streaming started!");
audioStreamer.AudioExtractionProgressChanged += (sender, args) =>
{
Console.SetCursorPosition(0, Console.CursorTop);
Console.Write("{0}%", args.ProgressPercentage);
}
/*
* Execute the audio downloader.
* For GUI applications note, that this method runs synchronously. And will block until the stream ist finished.
*/
audioDownloader.Execute();