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• Using FFmpeg or Similar to Normalize audio in a video to EBU R128 standard

  12 mai 2020, par MrNeedHelpPlease

  This is my first time here on stack overflow asking question.

  



  I am stuck and really struggling with this. I am trying to make some of my MXF video files to be EBU r128 standard for its audio.

  



  This means that it has to be -23 and not higher than 0.5.

  



  My current process

  



  Watch_folder > Encoding to MXF > Output_folder

  



  I need to makesure when its comes to output folder, those MXF files are EBU R128 Loudness compliant.

  



  What I have done so Far :

  



  FFMPEG :

  



  ffmpeg -i input.mxf -af loudnorm=I=-23:LRA=7:tp=-2:print_format=json -f null -

  



  got the result :

  



  Input Integrated : -15.1 LUFS
Input True Peak : +0.0 dBTP
Input LRA : 17.1 LU
Input Threshold : -26.2 LUFS

  



  Output Integrated : -17.1 LUFS
Output True Peak : -1.5 dBTP
Output LRA : 5.3 LU
Output Threshold : -27.6 LUFS

  



  Normalization Type : Dynamic
Target Offset : +1.1 LU

  



  then i did

  



  ffmpeg -i input.mxf  -af loudnorm=I=-23:LRA=7:tp=-2:measured_I=-15.1:measured_LRA=17.1:measured_tp=0:measured_thresh=-27.6:offset=1.1 -ar 48k -y output.mxf

  



  However, when i put it through the software Eff, it says that its not EBU compliant.

  



  *EDIT :
This also reduces the quality. for example ; my 6 Gb becomes 250 MB and you can tell the quality downgraded

  



  ffmpeg-normalize

  



  I did the following

  



  ffmpeg-normalize input.mxf -c:a pcm_s32le -ar 48000 -o output.mxf
but this gives me errors.

  



  if i do it without the output file type, i get a mkv which will not work for me. i need it to be mxf.

  


• Revision 0d80584327 : vp8_loop_filter_bh_y_sse2 : save/restore xmm registers xmm[6-11] should be saved

  21 novembre 2012, par James Zern

  Changed Paths : Modify /vp8/common/x86/loopfilter_block_sse2.asm vp8_loop_filter_bh_y_sse2 : save/restore xmm registers xmm[6-11] should be saved and restored for Windows x64 ; prevents an encoder mismatch and some datarate issues. Change-Id : (...)

• Split into video frames and save as jpeg

  3 janvier 2017, par Selman Akbulut

  I want to split all frames and save the jpeg file but Error getBuffredImage

  public static void main( String[] args )
  
  {
  
      FFmpegFrameGrabber g = new FFmpegFrameGrabber("C:\1.mp4");
  
      g.start();
  
  
  
      for (int i = 0 ; i < 50 ; i++) {
  
          ImageIO.write(g.grab().getBufferedImage(), "png", new File(System.currentTimeMillis() + ".png"));
  
      }
  
      g.stop(); 
  
  }