Combine an image into audio file and make a video file in android programmatically

Question

I gone through the tutorial of ffmpeg library to combine the image into audio file.

This is looking very complex and getting error with environment value is null.

Answer 1

ffmpeg does not come with android phones. You need to compile it yourself for android and deploy on the device.

FFmpeg on Android

Answer 2

I didnt compiled FFMPEG, simply I used javacv for android and resolved my problem to combine audio and image and make it as video file. Steps: First Follow the steps provided here and then place the below code in your activity and make sure that to change the path of input files and output file.

 new AsyncTask<Void, Void, Void>() {
            ProgressDialog dialog;
            FFmpegFrameRecorder recorder;
            protected void onPreExecute() {
                dialog = new ProgressDialog(RecordActivity.this);
                dialog.setMessage("Genrating video, Please wait.........");
                dialog.setCancelable(false);
                dialog.show();
            };

            @Override
            protected Void doInBackground(Void... arg0) {

                File folder = Environment.getExternalStorageDirectory();
                String path = folder.getAbsolutePath() + "/DCIM/Camera";
               // ArrayList<String> paths = (ArrayList<String>) getListOfFiles(path, "jpg");
                long millis = System.currentTimeMillis();

                videoPath = path + "/" + "test_sham_"+millis+".3gp";

                try {



                //audio grabber
                FrameGrabber grabber2 = new FFmpegFrameGrabber(folder.getAbsolutePath()+"/Samsung/Music/Over_the_horizon.mp3"); 

                //video grabber
                FrameGrabber grabber1 = new FFmpegFrameGrabber(path+"/20140527_133034.jpg"); 
                    grabber1.start();

                    grabber2.start();

                  recorder = new FFmpegFrameRecorder(path
                          + "/" + "test_sham_"+millis+".3gp",  grabber1.getImageWidth(), grabber1.getImageHeight(),2);

                    //recorder.setVideoCodec(5);
                    recorder.setVideoCodec(avcodec.AV_CODEC_ID_MPEG4);
                     // recorder.setVideoCodec(avcodec.AV_CODEC_ID_MP4ALS);

                    recorder.setFormat("3gp");
                  //  recorder.setFormat("mp4");
                    recorder.setFrameRate(frameRate);
                    recorder.setSampleRate(grabber2.getSampleRate());
                    recorder.setVideoBitrate(30);
                    startTime = System.currentTimeMillis();
                    recorder.start();

                    Frame frame1, frame2 = null; 

                    while ((frame1 = grabber1.grabFrame()) != null || 

                          (frame2 = grabber2.grabFrame()) != null) { 

                        recorder.record(frame1); 

                        recorder.record(frame2); 

                    } 

                    recorder.stop(); 

                    grabber1.stop(); 

                    grabber2.stop(); 




                    System.out.println("Total Time:- " + recorder.getTimestamp());

                } catch (Exception e) {
                    e.printStackTrace();
                }

                return null;
            }

            protected void onPostExecute(Void result) {
                dialog.dismiss();
                Intent intent = new Intent(Intent.ACTION_VIEW); 
                intent.setDataAndType(Uri.parse(videoPath), "video/3gp");
                startActivity(intent);
                Toast.makeText(RecordActivity.this, "Done:::"+videoPath, Toast.LENGTH_SHORT)
                        .show();
            };
        }.execute();

For references:ref1, ref2