"-y -i input.mp4 -ss 00:00:01.00 -t 00:00:15.000 -c copy output.mp4"

"-y -i input.mp4 -ss 00:00:01.000 -t 00:00:15.000 -async 1 output.mp4"

String[] cmd = new String[]{"-y","-i",input,"-ss","00:00:05.000","-vcodec","copy",
            "-acodec","copy","-t","00:00:15.00","-strict","-2",output };

    final FFmpeg ffmpeg = FFmpeg.getInstance(this);
    try {
        ffmpeg.execute(cmd, new FFmpegExecuteResponseHandler() {
            @Override
            public void onSuccess(String message) {
                Log.i("VideoEditActivity", "Success " + message);
                is_video_generated_ = true;
            }

            @Override
            public void onProgress(String message) {
                Log.i("VideoEditActivity", "Progress updated " + message);
            }

            @Override
            public void onFailure(String message) {
                Log.e("VideoEditActivity", "ERROR! " + message);
            }

            @Override
            public void onStart() {
                progress_dialog_.setMessage(getString(R.string.str_video_generating));
                progress_dialog_.show();
            }

            @Override
            public void onFinish() {
                Log.i("VideoEditActivity", "Finished");
                progress_dialog_.hide();

                Intent intent = new Intent(getApplicationContext(), VideoPlayActivity.class);
                intent.putExtra("media", edited_video_path_);
                startActivity(intent);
            }
        });
    } catch (FFmpegCommandAlreadyRunningException e) {
        e.printStackTrace();
    }

/**
 * Command for cutting video
 */
private void executeCutVideoCommand(long startMs, long endMs) {

    String destPath = "/storage/emulated/0/DCIM/test/";//Replace ypur dest Path
    File externalStoragePublicDirectory = new File(destPath);
    if (!externalStoragePublicDirectory.exists() ? externalStoragePublicDirectory.mkdir() : true) {
        String yourRealPath = "YOUR INPUT PATH";//getPath(MainActivity.this, selectedVideoUri);
        String filePrefix = yourRealPath.substring(yourRealPath.lastIndexOf("."));
        String destFileName = "cut_video";
        boolean isFastMode = false;
        File dest = (filePrefix.equals(".webm") || filePrefix.equals(".mkv")) ? new File(externalStoragePublicDirectory, destFileName + ".mp4") : new File(externalStoragePublicDirectory, destFileName + filePrefix);
        int fileNo = 0;
        while (dest.exists()) {
            fileNo++;
            dest = (filePrefix.equals(".webm") || filePrefix.equals(".mkv")) ? new File(externalStoragePublicDirectory, destFileName + fileNo + ".mp4") : new File(externalStoragePublicDirectory, destFileName + fileNo + filePrefix);
        }
        Log.d(TAG, "startTrim: src: " + yourRealPath);
        Log.d(TAG, "startTrim: dest: " + dest.getAbsolutePath());
        Log.d(TAG, "startTrim: startMs: " + startMs);
        Log.d(TAG, "startTrim: endMs: " + endMs);
        filePath = dest.getAbsolutePath();
        final String[] complexCommand = isFastMode ?
                (filePrefix.equals(".webm") || filePrefix.equals(".mkv") || filePrefix.equals(".m4v") || filePrefix.equals(".mov")) ?
                        new String[]{"-ss", "" + (startMs / 1000), "-y", "-i", yourRealPath, "-preset", "ultrafast", "-t", "" + ((endMs - startMs) / 1000), "-vcodec", "mpeg4", "-b:v", "2097152", "-b:a", "48000", "-ac", "2", "-ar", "22050", "-strict", "-2", filePath}
                        : new String[]{"-y", "-i", yourRealPath, "-preset", "ultrafast", "-ss", "" + (startMs / 1000), "-t", "" + ((endMs - startMs) / 1000), "-c", "copy", filePath}
                : (filePrefix.equals(".webm") || filePrefix.equals(".mkv") || filePrefix.equals(".m4v") || filePrefix.equals(".mov")) ?
                new String[]{"-ss", "" + (startMs / 1000), "-y", "-i", yourRealPath, "-t", "" + ((endMs - startMs) / 1000), "-vcodec", "mpeg4", "-b:v", "2097152", "-b:a", "48000", "-ac", "2", "-ar", "22050", "-strict", "-2", filePath} :
                new String[]{"-y", "-i", yourRealPath, "-ss", "" + (startMs / 1000), "-t", "" + ((endMs - startMs) / 1000), "-c", "copy", filePath};
        execFFmpegBinary(complexCommand);
    }
}

private void execFFmpegBinary(final String[] command) {
    try {
        ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
            @Override
            public void onFailure(String s) {
                Log.d(TAG, "FAILED with output : " + s);
            }

            @Override
            public void onSuccess(String s) {
                Log.d(TAG, "SUCCESS with output : " + s);

            }

            @Override
            public void onProgress(String s) {
                Log.d(TAG, "Started command : ffmpeg " + command);

            }

            @Override
            public void onStart() {
                Log.d(TAG, "Started command : ffmpeg " + command);

            }

            @Override
            public void onFinish() {
                Log.d(TAG, "Finished command : ffmpeg " + command);


            }
        });
    } catch (FFmpegCommandAlreadyRunningException e) {
        // do nothing for now
    }
}

-ss 00:00:00.00 -t 00:00:00.00 -noaccurate_seek -i input.mp4 -codec copy -avoid_negative_ts 1 output.mp4