Error in merging videos

[nauman415]

String intermediate1 = getExternalFilesDir(null).getAbsoluteFile()+"/intermediate1.ts";
String intermediate2 = getExternalFilesDir(null).getAbsoluteFile()+"/intermediate2.ts";
String filein = getExternalFilesDir(null).getAbsoluteFile()+"/in.mp4";
String fileout = getExternalFilesDir(null).getAbsoluteFile()+"/out.mp4";
String fileouts = getExternalFilesDir(null).getAbsoluteFile()+"/outs.mp4";
/************************************************/
Controller.getInstance().run(new String[]{
"-i",
filein,
"-c",
"copy",
"-bsf:v h264_mp4toannexb",
"-f",
"mpegts",

            intermediate1
    });
    Controller.getInstance().run(new String[]{
            "-i",
            fileout,
            "-c",
            "copy",
            "-bsf:v h264_mp4toannexb",
            "-f",
            "mpegts",

            intermediate2
    });

[https://trac.ffmpeg.org/wiki/Concatenate]
/*****************************************/
below is your code

from this files are created but not merge into 1 file

Controller.getInstance().run(new String[]{
"-f",
"-i",
filein,
"-vcodec",
"copy",
"-an",
intermediate2
}); Controller.getInstance().run(new String[]{
"-f",
"-i",
fileout,
"-vcodec",
"copy",
"-an",
intermediate1
});
Controller.getInstance().run(new String[]{
"-i",
"concat:"+intermediate1+"|"+intermediate2,
"-c",
"copy",
"-bsf:a aac_adtstoasc",
fileouts
});
Application is closed when this code is run
Please help