Get the time lenght from video files using the next repo https://github.com/caprica/vlcj-info

Example.java

import uk.co.caprica.vlcjinfo.MediaInfo;
import uk.co.caprica.vlcjinfo.Section;
import uk.co.caprica.vlcjinfo.Sections;

public class Ejemplo {

    public static void main(String[] args) {
        System.setProperty("jna.library.path", "C:\\Program Files\\MediaInfo"); //windows path
        MediaInfo media = MediaInfo.mediaInfo("C:\\Videos\\yourVideo.mp4");
        Sections sections = media.sections("Video");
        Section section = sections.first();
        System.out.println(section.value("Duration"));
    }
}