How To Concat Mp4 Files?

I want to concat 2 mp4 audio files. I tired to use https://code.google.com/p/mp4parser/ What I want to achieve: i want to concat f1 and f2 and save it to f2.If f2 does not exists -

Solution 1:

And there is working solution: use library https://code.google.com/p/mp4parser/

download jars

isoparser-1.0.1.jar
aspectjrt-1.7.4.jar

constants

mFileNameFromRec = context.getCacheDir().getAbsolutePath();
        mFileNameFromRec += "/audiorecordtest.mp4";
        mFileNameToUse = context.getCacheDir().getAbsolutePath();
        mFileNameToUse += "/audioToUse.mp4";

code

privatevoidmergeSongs()throws Exception {
        Filemerge=newFile(mFileNameToUse);
        Stringf1= mFileNameFromRec;
        Stringf2= mFileNameToUse;
        if (!merge.exists()) {

            InputStreamin=newFileInputStream(newFile(f1));
            OutputStreamout=newFileOutputStream(newFile(f2));

            // Transfer bytes from in to outbyte[] buf = newbyte[1024];
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
            in.close();
            out.close();
            Log.d("audio concatenation", "was copied");

        } else {

            Movie[] inMovies;

            inMovies = newMovie[] { MovieCreator.build(f2),
                    MovieCreator.build(f1), };

            List<Track> videoTracks = newLinkedList<Track>();
            List<Track> audioTracks = newLinkedList<Track>();

            for (Movie m : inMovies) {
                for (Track t : m.getTracks()) {
                    if (t.getHandler().equals("soun")) {
                        audioTracks.add(t);
                    }
                    if (t.getHandler().equals("vide")) {
                        videoTracks.add(t);
                    }
                }
            }

            Movieresult=newMovie();
            if (videoTracks.size() > 0) {
                result.addTrack(newAppendTrack(videoTracks
                        .toArray(newTrack[videoTracks.size()])));
            }

            if (audioTracks.size() > 0) {
                result.addTrack(newAppendTrack(audioTracks
                        .toArray(newTrack[audioTracks.size()])));
            }

            Containerout=newDefaultMp4Builder().build(result);

            RandomAccessFileram=newRandomAccessFile(String.format(context
                    .getCacheDir() + "/output.mp4"), "rw");
            FileChannelfc= ram.getChannel();
            out.writeContainer(fc);
            ram.close();
            fc.close();
            // IsoFile out = (IsoFile) new DefaultMp4Builder().build(result);// FileOutputStream fos = new FileOutputStream(new File(// String.format(context.getCacheDir() + "/output.mp4")));// out.getBox(fos.getChannel());// fos.close();StringmergedFilepath= String.format(context.getCacheDir()
                    + "/output.mp4");

            copy(newFile(mergedFilepath), newFile(mFileNameToUse));
            Toast.makeText(getApplicationContext(), "success",
                    Toast.LENGTH_SHORT).show();
        }
    }