Merging MP4 video files with Mp4parser

First, import the associated. jar file

Compile ' com.googlecode.mp4parser:isoparser:1.1.21 '

You can also use the download jar package

After the association is complete, use the following code to implement the merge

public class MergerMp4 {

    public  void MergeMP4 () {
        list<string> fileList = new arraylist<string> ();
        list<com.googlecode.mp4parser.authoring.movie> movieslist = new linkedlist<> ();

Add files that need to be merged Filelist.add ("/sdcard/video/20161122135659.mp4");
        Filelist.add ("/sdcard/video/20161122135810.mp4");
        Filelist.add ("/sdcard/video/20161122144321.mp4");
        Filelist.add ("/sdcard/video/20161122144357.mp4");

        Filelist.add ("/sdcard/video/20161122144447.mp4");
            try{for (String file:filelist) {movieslist.add (moviecreator.build (file));
        }} catch (IOException e) {e.printstacktrace ();
        } list<track> videotracks = new linkedlist<track> ();
        list<track> audiotracks = new linkedlist<track> ();
            for (Com.googlecode.mp4parser.authoring.Movie m:movieslist) {to (track t:m.gettracks ())
                {if (T.gethandler (). Equals ("Soun")) {Audiotracks.add (t);
       } if (T.gethandler (). Equals ("vide"))         {Videotracks.add (t);

        }}} Movie result = new movie (); try {if (audiotracks.size () > 0) {result.addtrack (new Appendtrack (AUD
            Iotracks.toarray (New Track[audiotracks.size ()))); } if (Videotracks.size () > 0) {result.addtrack (new Appendtrack (Videotracks.toa
            Rray (New Track[videotracks.size ()))); }} catch (IOException e) {//TODO auto-generated catch block E.printstac
        Ktrace ();

        } Container out = new Defaultmp4builder (). Build (result); try {

Output the merged file
            filechannel fc = new Randomaccessfile ("/sdcard/video/small/output2.mp4", "RW"). Getchannel ();
            Out.writecontainer (FC);
            Fc.close ();
        }
        catch (Exception e)
        {
            //TODO auto-generated catch block
            e.printstacktrace ();
        }

        Movieslist.clear ();
        Filelist.clear ();

    }

}