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• ffmpeg audio property is blank in output video

  25 juin 2015, par hrs

  Here’s what I have to do,
  I want to convert two different images in different video file (ex : convert a.jpg into a.avi and b.jpg into b.avi).

  I am trying to generate video (.avi) from image file. Video file is generated successfully but I can’t see the audio properties when I right click on video and see details tab in property.

  Then I have one video file (.avi), using ffmpeg concat function, I am concating these three video files (a.avi, middle.avi which I already have, b.avi).
  After this, I am getting file output.avi but audio is not there in outout.avi file. I have middle.avi which already contains audio.

  Here’s my concat command,

  ffmpeg -i "concat:a.avi|middle.avi|b.avi" -vcodec copy 103_n4_2.avi

  I am trying to generate video (.avi) from only one image file. Video file is generated successfully but I can’t see the audio properties when I right click on video and see details tab in property.

  Here’s my command to convert image to video :

  ffmpeg -loop 1 -i bCopy.jpg -t 30 -q:v 0 -r 24 output_a.avi 

  PS : a.avi and b.avi (which I have generated from images does not contain audio) but only middle.avi contains the audio.

• Why menconder fps rate does not work ?

  2 mars 2016, par ACR

  I’m using mencoder to create a video out of some .png files. The problem is that the frame rate doesn’t change, regardless of the -fps flag. The output video has different time lengths (in their properties), but the video’s size and speed are always the same (regardless of the FPS chosen).

  I just want to create a shorted video by using higher FPS rates. In short, a "time-lapse" of my original set of images. What am I doing wrong with mencoder ? I’m using the following command :

  mencoder mf://./IMG/images*.png -mf w=800:h=600:fps=20:type=png -ovc copy -oac copy -o video.avi

• how to merge an audio file with an image in android using javaCV

  11 mai 2016, par Darshan Soni

  I have aleady tried some code but it is throwing exception like this,

  05-11 17:34:00.449 1838-2316/darshan.fragments_demo E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
  
                                                                        Process: darshan.fragments_demo, PID: 1838
  
                                                                        java.lang.RuntimeException: An error occurred while executing doInBackground()
  
                                                                            at android.os.AsyncTask$3.done(AsyncTask.java:309)
  
                                                                            at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
  
                                                                            at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
  
                                                                            at java.util.concurrent.FutureTask.run(FutureTask.java:242)
  
                                                                            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
  
                                                                            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
  
                                                                            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
  
                                                                            at java.lang.Thread.run(Thread.java:818)
  
                                                                         Caused by: java.lang.UnsatisfiedLinkError: org.bytedeco.javacpp.avutil
  
                                                                            at java.lang.Class.classForName(Native Method)
  
                                                                            at java.lang.Class.forName(Class.java:324)
  
                                                                            at org.bytedeco.javacpp.Loader.load(Loader.java:413)
  
                                                                            at org.bytedeco.javacpp.Loader.load(Loader.java:381)
  
                                                                            at org.bytedeco.javacpp.avformat$AVFormatContext.<clinit>(avformat.java:2597)
  
                                                                            at org.bytedeco.javacv.FFmpegFrameGrabber.startUnsafe(FFmpegFrameGrabber.java:386)
  
                                                                            at org.bytedeco.javacv.FFmpegFrameGrabber.start(FFmpegFrameGrabber.java:380)
  
                                                                            at darshan.fragments_demo.Layout1$Test.doInBackground(Layout1.java:166)
  
                                                                            at darshan.fragments_demo.Layout1$Test.doInBackground(Layout1.java:136)
  
                                                                            at android.os.AsyncTask$2.call(AsyncTask.java:295)
  
                                                                            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  
                                                                            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
  
                                                                            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
  
                                                                            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
  
                                                                            at java.lang.Thread.run(Thread.java:818)
  
  </clinit>

   
  Now in gradle file I’ve included some libraries my gradle file is as follow,

  apply plugin: 'com.android.application'
  
  
  
  android {
  
      compileSdkVersion 23
  
      buildToolsVersion "23.0.2"
  
  
  
          packagingOptions {
  
              exclude 'META-INF/LICENSE'
  
              exclude 'META-INF/LICENSE-FIREBASE.txt'
  
              exclude 'META-INF/NOTICE'
  
              exclude 'META-INF/services/javax.annotation.processing.Processor'
  
              pickFirst  'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.properties'
  
              pickFirst  'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.xml'
  
              pickFirst  'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.properties'
  
              pickFirst  'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.xml'
  
  
  
          }
  
  
  
  
  
      defaultConfig {
  
          applicationId "darshan.fragments_demo"
  
          minSdkVersion 16
  
          targetSdkVersion 23
  
          versionCode 1
  
          versionName "1.0"
  
      }
  
      buildTypes {
  
          release {
  
              minifyEnabled false
  
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  
          }
  
      }
  
  }
  
  
  
  dependencies {
  
      compile fileTree(dir: 'libs', include: ['*.jar'])
  
      testCompile 'junit:junit:4.12'
  
  
  
      compile 'com.android.support:appcompat-v7:23.1.1'
  
      compile 'com.android.support:design:23.1.1'
  
      compile group: 'org.bytedeco', name: 'javacv', version: '1.1'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '2.4.11-0.11', classifier: 'android-arm'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '2.4.11-0.11', classifier: 'android-x86'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.6.1-0.11', classifier: 'android-arm'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.6.1-0.11', classifier: 'android-x86'
  
  
  
  
  
  }

  And java file is as follow,

  public class Test extends AsyncTask {
  
  
  
      ProgressDialog dialog;
  
      FFmpegFrameRecorder recorder;
  
      String videoPath;
  
      protected void onPreExecute() {
  
          dialog = new ProgressDialog(Layout1.this);
  
          dialog.setMessage("Genrating video, Please wait.........");
  
          dialog.setCancelable(false);
  
          //dialog.show();
  
      };
  
      @Override
  
      protected Void doInBackground(Void... params) {
  
  
  
          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
  
  
  
              FFmpegFrameGrabber grabber2 = new FFmpegFrameGrabber(folder.getAbsolutePath()+"/bluetooth/abcd.mp3");
  
  
  
              //video grabber
  
              FFmpegFrameGrabber grabber1 = new FFmpegFrameGrabber(path+"/1.jpg");
  
              grabber1.start();
  
  
  
              grabber2.start();
  
  
  
              recorder = new FFmpegFrameRecorder(path
  
                      + "/" + "test_sham_"+millis+".mp4",  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(30);
  
              recorder.setSampleRate(grabber2.getSampleRate());
  
              recorder.setVideoBitrate(30);
  
              long 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;
  
      }
  
  }
  
  </string></string>

  I just cant figure out what is wrong with the implementation
  Please help