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• javacpp-presets ffmpeg : Trying to access Ebur128Context->integrated_loudness but unsuccessful

  11 avril 2019, par Sourabh Jain

  [FFMPEG] Trying to access Ebur128Context->integrated_loudness but unsuccessful , using javacpp presets

  I am trying to run ebur128Filter on audio file . similar to be doing
  [http://ffmpeg.org/doxygen/2.6/f__ebur128_8c_source.html#l00135]

  ffmpeg -i sample.wav -filter_complex ebur128=peak=true -f null -

  result of which is :

  [Parsed_ebur128_0 @ 0x7f9d38403ec0] Summary:
  
  
  
  Integrated loudness:
  
  I: -15.5 LUFS
  
  Threshold: -25.6 LUFS
  
  
  
  Loudness range:
  
  LRA: 1.5 LU
  
  Threshold: -35.5 LUFS
  
  LRA low: -16.3 LUFS
  
  LRA high: -14.8 LUFS
  
  
  
  True peak:
  
  Peak: -0.4 dBFS 

  package org.bytedeco.javacv;
  
  
  
  import org.bytedeco.javacpp.BytePointer;
  
  import org.bytedeco.javacpp.Pointer;
  
  import org.bytedeco.javacpp.avfilter;
  
  import org.junit.jupiter.api.Test;
  
  
  
  import java.io.InputStream;
  
  import java.nio.ByteBuffer;
  
  import java.util.logging.Level;
  
  import java.util.logging.Logger;
  
  
  
  import static org.bytedeco.javacpp.avutil.av_opt_get;
  
  
  
  public class LoudnessAndTruePeakTest {
  
  
  
      @Test
  
      public void ebur1228FilterTest() throws FrameFilter.Exception, FrameGrabber.Exception {
  
          Logger.getGlobal().setLevel(Level.ALL);
  
          String filter = "ebur128=peak=true:framelog=verbose";
  
          FFmpegFrameFilter fFmpegFrameFilter = new FFmpegFrameFilter(filter, 2);
  
          InputStream is = getClass().getResourceAsStream("/resources/sample.wav");
  
          FFmpegFrameGrabber fFmpegFrameGrabber = new FFmpegFrameGrabber(is);
  
          fFmpegFrameFilter.start();
  
          fFmpegFrameGrabber.start();
  
          Frame frame;
  
          while ((frame = fFmpegFrameGrabber.grabSamples()) != null) {
  
              fFmpegFrameFilter.push(frame);
  
  
  
  
  
          }
  
              printFilterState(fFmpegFrameFilter);
  
  
  
  
  
          fFmpegFrameGrabber.stop();
  
          fFmpegFrameFilter.stop();
  
  
  
      }
  
  
  
      private void printFilterState(FFmpegFrameFilter fFmpegFrameFilter) {
  
          avfilter.AVFilterContext filters = fFmpegFrameFilter.afilter_graph.filters(3);
  
          Pointer value = filters.priv();
  
          String name = filters.name().getString();
  
          System.out.println(name);
  
          Pointer pointer = new BytePointer(8);
  
          ByteBuffer buffer = pointer.asByteBuffer();
  
  
  
          av_opt_get(value, "integrated_loudness", 0, buffer);
  
          double db = buffer.getDouble();
  
          System.out.println("integrated_loudness : " + db);
  
  
  
          pointer = new BytePointer(8);
  
          buffer = pointer.asByteBuffer();
  
          av_opt_get(value, "i400.rel_threshold", 0, buffer);
  
          db = buffer.getDouble();
  
          System.out.println("i400.rel_threshold :" + db);
  
  
  
          pointer = new BytePointer(8);
  
          buffer = pointer.asByteBuffer();
  
          av_opt_get(value, "loudness_range", 0, buffer);
  
          db = buffer.getDouble();
  
          System.out.println("loudness_range :" + db);
  
  
  
          pointer = new BytePointer(8);
  
          buffer = pointer.asByteBuffer();
  
          av_opt_get(value, "i3000.rel_threshold :", 0, buffer);
  
          db = buffer.getDouble();
  
          System.out.println("i3000.rel_threshold :" + db);
  
  
  
          pointer = new BytePointer(8);
  
          buffer = pointer.asByteBuffer();
  
          av_opt_get(value, "lra_low", 0, buffer);
  
          db = buffer.getDouble();
  
          System.out.println("lra_low :" + db);
  
  
  
          pointer = new BytePointer(8);
  
          buffer = pointer.asByteBuffer();
  
          av_opt_get(value, "lra_high", 0, buffer);
  
          db = buffer.getDouble();
  
          System.out.println("lra_high :" + db);
  
      }
  
  }

  Output from program is :
  
  
  
  Input #0, wav, from 'java.io.BufferedInputStream@2a40cd94':
  
  Metadata:
  
  title : test
  
  album : test
  
  artist : test
  
  genre : Cinematic
  
  Duration: N/A, bitrate: 256 kb/s
  
  Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, 2 channels, s16, 256 kb/s
  
  Invalid return value 0 for stream protocol
  
  Invalid return value 0 for stream protocol
  
  Parsed_ebur128_0
  
  integrated_loudness : 2.315841784746324E77
  
  i400.rel_threshold :2.315841784746324E77
  
  loudness_range :2.315841784746324E77
  
  i3000.rel_threshold :1.3561678660795056E248
  
  lra_low :2.315841784746324E77
  
  lra_high :2.0858062529025373E-306
  
  [Parsed_ebur128_0 @ 0x7f8942683940] Summary:
  
  
  
  Integrated loudness:
  
  I: -70.0 LUFS
  
  Threshold: 0.0 LUFS
  
  
  
  Loudness range:
  
  LRA: 0.0 LU
  
  Threshold: 0.0 LUFS
  
  LRA low: 0.0 LUFS
  
  LRA high: 0.0 LUFS
  
  
  
  True peak:
  
  Peak: -inf dBFS
  
  
  
  Process finished with exit code 0

  not sure what I am doing wrong here

• How to access docker container from another container

  5 mars 2020, par M P

  Consider this solution

  Ubuntu 18.04 -
  Installed docker -
  Created openlitespeed container -
  Created ffmpeg container -

  In my host this command is ok :

  $ docker exec -it ffmpeg-container ffmpeg -version

  ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers

  but How to access in openlitespeed container to ffmpeg container with php code ?

  <?php
$code='docker exec -it ffmpeg-container ffmpeg -version';
echo exec($code);

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  18 novembre 2011, par Sebastian Tschan

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