Cortar pedaço de video utilizando java

public void cortar(File file, int segundos) throws FileNotFoundException, IOException, InterruptedException {
    InputStream is = null;
    OutputStream os = null;
    try {
        is = new FileInputStream(file);
        os = new FileOutputStream(new File("..."));
        byte[] buffer = new byte[1024];
        int length;
        int total = 0;

        while ((length = is.read(buffer)) > 0 && total < is.available() / 2) {
            os.write(buffer, 0, length);
            total += length;
        }
    } finally {
        is.close();
        os.close();
    }
}