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• FFmpeg android video processing does not return error message

  25 août 2018, par Дмитрий Мельчин

  friends. I am creating a program that puts the sound and picture to video. I’m using the ffmpeg library https://github.com/bravobit/FFmpeg-Android.
  The command looks like this :

  String command = "-i /data/user/0/com.radpony.vhs.camcorder/files/RADVHS/camcorder_video.mp4 -i /data/user/0/com.radpony.vhs.camcorder/files/RADVHS/watermark_png.png -i /data/user/0/com.radpony.vhs.camcorder/files/RADVHS/playarrow.png -filter_complex [0]crop=720:720[croped];[1]scale=w=143:h=50[tmp];[croped][tmp]overlay=x=577:y=10[overlayed];[overlayed][2]overlay=x=150:y=10[overlayed2];[overlayed2]drawtext=fontfile=/data/user/0/com.radpony.vhs.camcorder/cache/VCR_OSD_MONO_1_001.ttf:text='PM 11\:06Aug..25 2018':fontcolor=white:fontsize=48:x=50:y=600[withdate];[withdate]drawtext=fontfile=/data/user/0/com.radpony.vhs.camcorder/cache/VCR_OSD_MONO_1_001.ttf:text='Play':fontcolor=white:fontsize=48:x=50:y=30 -codec:a copy -c:v libx264 -preset ultrafast /data/user/0/com.radpony.vhs.camcorder/files/RADVHS/rendered_video.mp4";

  It works great for Android 6, but on the Samsung devices with Android 7 while processing of video ffmpeg just stops without displaying an error message.
  If someone knows the solution to this problem, help, please

• doc : apply various grammar fixes

  10 août 2013, par Bryce W. Harrington

  doc : apply various grammar fixes
  The first sentence of each of the modified man pages are worded a bit
  
  awkwardly. These minor copy-edits should make them clearer.
  Signed-off-by : Bryce Harrington <b.harrington@samsung.com>
  
  Signed-off-by : Stefano Sabatini <stefasab@gmail.com>
  

  • [DH] doc/demuxers.texi
  • [DH] doc/ffmpeg.texi
  • [DH] doc/outdevs.texi
  • [DH] doc/protocols.texi

• how to merge a mp3 file into a mp4 file with low framerate(0.5) using FFmpeg wrapped in javacv

  21 février 2016, par hychanbb

  The video is with no sound only image and frame rate is 0.5, i want to merge a mp3 file into it, but it seem not work at all. Below it the code

              File folder = Environment.getExternalStorageDirectory();
  
              String path = folder.getAbsolutePath() + "/DCIM/Camera";
  
              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(avcodec.AV_CODEC_ID_MPEG4);
  
                  recorder.setFormat("3gp");
  
                  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();
  
              }

  I do the above and find out that the video contains no sound. Anyone knows how to deal with the framerate problem...