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• 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...

• Revision db8e731b8d : Add vpx_dsp_common.h file Move the clamp functions to vpx_dsp_common.h file. Cl

  15 juillet 2015, par Jingning Han

  Changed Paths :
   Modify /vp9/common/vp9_common.h

  
   Modify /vp9/common/vp9_loopfilter_filters.c

  
   Modify /vpx_dsp/vpx_dsp.mk

  
   Add /vpx_dsp/vpx_dsp_common.h

  
  
  Add vpx_dsp_common.h file

  Move the clamp functions to vpx_dsp_common.h file. Clear out the
  dependency of vp9_loopfilter_filters.c on vp9_common.h file.

  Change-Id : I9c4b928bcd7f597106b5aa96354356d3775a3431

• ffmpeg m3u8 segment file and relative path for file names

  15 mars 2013, par Luuk D. Jansen

  This must be a simple issue, but I have a difficulty with the M3U8 file created by FFMPEG as it contains the absolute path to the files, and not just the file names which I need. I am trying to be able to view the stream while it is encoded, and this seems the last hurdle.

  My FFMPEG command is (ignore the comma's) :

  ffmpeg, -i, /Users/User/Documents/Java/server/data/media/1/1/Promo-2013.mov, -dn, -y, -f, mpegts, -c:a, libfdk_aac, -strict, -2, -ar, 48000, -b:a, 128000, -s, 640x360, -c:v, libx264, -b:v, 700000, -aspect, 640:360, -r, 25, -level, 3.0, -vprofile, baseline, -flags, +loop, -cmp, chroma, -coder, 0, -me_range, 16, -keyint_min, 25, -sc_threshold, 40, -i_qfactor, 0.71, -bt, 200k, -maxrate, 700000, -bufsize, 700000, -rc_eq, 'blurCplx^(1-qComp)', -qcomp, 0.6, -qmin, 10, -qmax, 51, -qdiff, 4, -level, 30, -g, 30, -async, 2, -partitions, +parti4x4+partp8x8+partb8x8, -subq, 5, -trellis, 1, -refs, 1, -vbsf, h264_mp4toannexb, -flags, -global_header, -map, 0, -f, segment, -segment_time, 10, -segment_list, /Users/User/Documents/Java/server/data/media/1/3/prog_index.m3u8, -segment_list_flags, +live, -segment_format, mpegts, /Users/User/Documents/Java/server/data/media/1/3/segment_%05d.ts

  The resulting file is :

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-MEDIA-SEQUENCE:0
  
  #EXT-X-ALLOW-CACHE:YES
  
  #EXT-X-TARGETDURATION:12
  
  #EXTINF:10.005333,
  
  /Users/User/Documents/Java/server/data/media/1/10/segment_00000.ts
  
  #EXTINF:11.952000,
  
  /Users/User/Documents/Java/server/data/media/1/10/segment_00001.ts
  
  #EXTINF:10.002667,
  
  /Users/User/Documents/Java/server/data/media/1/10/segment_00002.ts
  
  #EXTINF:10.008000,
  
  /Users/User/Documents/Java/server/data/media/1/10/segment_00003.ts
  
  #EXTINF:0.266667,
  
  /Users/User/Documents/Java/server/data/media/1/10/segment_00004.ts
  
  #EXT-X-ENDLIST

  It all works perfect, but I only want e.g. 'segment_00000.ts, and not the complete absolute path, as that is of no use for live streaming. As this is a very ordinary application, I must do something wrong.