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• Encode Android AudioRecord raw pcm data to other format using ffmpeg

  31 juillet 2013, par crazy

  I am using AudioRecord class to read the data in bytes. Since the data received in the AudioRecord.read(byte[], int, int) is in raw form(too big), I want to encode it in some other compressed format like Vorbis(.ogg) using ffmpeg C Api. I have compiled the libffmpeg.so file which I will call through JNI. I want to know how this will be done.

  After successfully encoding I want to create a video with this same audio and a single image attached to it.

  Thanks.

• how to integrate audio with video in android using javacv/opencv ?

  11 mai 2016, par rams

  For my application i created video from set of images by using javacv/opencv in android.but that video plays with out sound.so i want to add my recorded audio(mp3 file) to that generated video how can i achieve it ?

  This is my code which is used to get video from images,

                  String path =SCREENSHOT_FOLDER2; 
  
  
  
              File folder = new File(path);
  
  
  
  
  
                  listOfFiles = folder.listFiles();  
  
                  if(listOfFiles.length>0)
  
                  {
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
                iplimage = new opencv_core.IplImage[listOfFiles.length];
  
  
  
  
  
                 for (int j = 0; j < listOfFiles.length; j++) {
  
  
  
                   String files="";       
  
  
  
                 if (listOfFiles[j].isFile()) 
  
                 {
  
                 files = listOfFiles[j].getName();
  
  
  
                   }   
  
  
  
  
  
                  String[] tokens = files.split("\\.(?=[^\\.]+$)");
  
                 String name=tokens[0]; 
  
  
  
                  System.out.println(" j " + name);
  
  
  
  
  
  
  
  
  
                iplimage[j]=cvLoadImage("/mnt/sdcard/images/"+name+".png");
  
  
  
  
  
                 }
  
  
  
              } 
  
  
  
  
  
  
  
                  File videopath = new File(SCREENSHOT_FOLDER3);
  
                  videopath.mkdirs();
  
                   FFmpegFrameRecord recorder = new          
  
                      FFmpegFrameRecord(SCREENSHOT_FOLDER3+
  
                    "video"+System.currentTimeMillis()+".mp4",320,480);
  
  
  
                   try {
  
                       recorder.setCodecID(CODEC_ID_MPEG4); //CODEC_ID_MPEG4                            
  
                       //CODEC_ID_MPEG1VIDEO
  
                       recorder.setBitrate(sampleVideoBitRate);
  
                       recorder.setFrameRate(10);                     
  
                       recorder.setPixelFormat(PIX_FMT_YUV420P); //PIX_FMT_YUV420P
  
  
  
  
  
                       recorder.start();
  
  
  
                       int x = 0;
  
                       int y = 0;
  
                      for (int i=0;i< 300 && x(y+10)) {
  
                              y=y+1;
  
                              x++;
  
                          }
  
  
  
                          }
  
                       recorder.stop();
  
                      }
  
                   catch (Exception e){
  
                       e.printStackTrace();
  
                     }

  now how to integrate audio file(.mp3) file in this code.

• How to build FFmpeg 2.0 for android on linux ?

  4 août 2013, par Md. Arafat Al Mahmud

  I have downloaded and extracted android-ndk-r9 on my Ubuntu11.04. I want to build FFmpeg latest version which I have downloaded from here
  using git. I followed the procedure described here. I have replaced this script suggested there with this. But I got the following error :

  

  How to resolve this issue or can you suggest me a better approach ?