有没有一个java API可以从youtube下载视频？

Question

我知道 YouTube Java API 不提供从 YouTube 下载视频的功能。但是，有没有办法使用 Java 下载给定浏览器 url 的 YouTube 视频并将其保存到文件中？我正在寻找类似的东西：

URL videoURL = getVideoURL();
// videoURL is input from user, as in http://www.youtube.com/watch?v=dfjghdjogdjgh
YoutubeVideo videoDownload = new YoutubeVideo(videoURL);
OutputStream outStream = new BufferedOutputStream(new FileOutputStream(getOutFile()));
//getOutfile gets file provided by user
InputStream inStream = new BufferedInputStream(videoDownload.getInputStream());
byte[] buffer = new byte[4096];
int n;
while ((n = inStream.read(buffer)) != -1){
    outStream.write(buffer, 0, n);
}
outStream.close();
inStream.close();