Recherche avancée

Sur d’autres sites (10879)

• Bash Script to get info from ffprobe

  14 novembre 2016, par Alan

  I am trying to create a script to process videos, but I was hoping to get bit_rate, width, and height info from the incoming files so I could better tune the output. The script works when I do the files one at a time, but when I put it into a loop all of a sudden I don’t get any info.

  So this works :

  #!/bin/bash
  
  eval $(ffprobe -v quiet -show_format -of flat=s=_ -show_entries stream=height,width,nb_frames,duration,codec_name input.mp4);
  
  width=${streams_stream_0_width};
  
  height=${streams_stream_0_height};
  
  bitrate=$((${format_bit_rate}/1000));
  
  echo $width,$height,$bitrate;

  This doesn’t when executed from find ./ -type f -regex ".*\.\(mkv\|mp4\|wmv\|flv\|webm\|mov\|avi\)" -print0 | xargs -0 /root/newbatch.sh

  for i; do
  
  eval '$(ffprobe -v quiet -show_format -of flat=s=_ -show_entries stream=height,width,nb_frames,duration,codec_name $i)';
  
  width=${streams_stream_0_width};
  
  height=${streams_stream_0_height};
  
  bitrate=${format_bit_rate};
  
  kbitrate=$((bitrate/1000));
  
  echo $i,$width,$height,$kbitrate;
  
  
  
  done

  I also get an error with the math of bitrate in the loop, but even when I comment it out I still get no results. Since it works one at a time, I am assuming the problem is a bash scripting and nothing to do with ffmpeg / ffprobe.

  That being said, I can do this :

  echo $i,$width,$height,$bitrate;

  and get back

  ./file1.mkv,,,
  
  ./file2.mkv,,,
  
  ./file3.mkv,,,
  
  ./file4.mkv,,,

  So it does get some info back, but it loses the info from the eval statement.

• Converting stereo file to mono but preserving peak and RMS loudness

  14 juin 2020, par user319249

  I am converting stereo audio files to mono using ffmpeg.

  



  ffmpeg -i $1 -ac 1 -ab 192k mono_$1


  



  However, after conversion, the RMS and peak loudness levels are not the same.

  



  Tests-iMac:auditions test$ ./rms.sh mono_test.mp3 
 mean_volume: -20.1 dB
 max_volume: -0.2 dB
 Peak level dB: -0.150201
 RMS level dB: -20.138039
 RMS peak dB: -10.650649
 RMS trough dB: -94.923318
 Flat factor: 0.000000
 Peak count: 2.000000
 Bit depth: 32/32
 Number of samples: 5800320
 Number of NaNs: 0.000000
 Number of Infs: 0.000000
 Number of denormals: 0.000000
Tests-iMac:auditions test$ ./rms.sh test.mp3 
 mean_volume: -22.9 dB
 max_volume: -2.9 dB
 Peak level dB: -2.896314
 RMS level dB: -22.883812
 RMS peak dB: -13.397327
 RMS trough dB: -95.943631
 Flat factor: 0.000000
 Peak count: 2.000000
 Bit depth: 32/32
 Number of samples: 5800320
 Number of NaNs: 0.000000
 Number of Infs: 0.000000
 Number of denormals: 0.000000


  



  The first ouput is the mono file which is technically louder than the stereo file, listed second. How can I preserve the peak and RMS values while also converting to mono ? I have no issue scripting in order to obtain the stereo loudness values to pass to the mono conversion process.

  



  Thanks !

  


• Anomalie #4579 (Nouveau) : Deprecated en php 8 à la création d’un article

  19 octobre 2020, par Franck D

  Hello :)

  Easyphp
  Apache 2.4.43 x64
  PHP 8.0.0 beta 1 x64
  MySQL 8.0.20 x64
  Firefox 81.0.2
  Windows 10 (1909)

  J’ai fait la création d’une rubrique, puis après avoir fait un clique pour la création d’un article, j’ai un Deprecated qui apparait au dessus du champ "titre de l’article"
  Deprecated : Required parameter $do follows optional parameter $idem in C :\...\ecrire\inc\chercher_rubrique.php on line 282