private static byte[] DownloadAudio(IEnumerable<VideoInfo> videoInfos)
{
/*
* 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(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments),
RemoveIllegalPathCharacters(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.
*/
var result = audioDownloader.GetMusicStream();
return result;
//audioDownloader.Execute();
//return null;
}