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• Selfoptimization ffmpeg script

  20 November 2023, by TheRob87

  I'd like to split mp3 Files at a specific range by silence.
To do that I have the following script, but don't know how to stop and restart the search function:

  


   $minDuraton = 180
 $maxDuraton = 480
 $paramDB = -42
 $w_paramDB = $paramDB


 $silparam = [string]$w_paramDB+"dB:d=0.2"

C:\ffmpeg\bin\ffmpeg.exe -v warning -i "C:\mp3\test.mp3" -af silencedetect=$silparam,ametadata=mode=print:file=-:key=lavfi.silence_start -vn -sn  -f s16le  -y D:\Mailbox\09_Tools\PS_Scripte\mp3\Tmp_silents_part.txt|
%{ if ($_ -match "start"){
    $i++
    $text,$time = $_ -split "="
    $p_Duration = $time - $StartPart
    if($p_Duration -gt ($maxDuraton +10)){
    # Stop ffmepg and restart with new parameter

     ##### -please help- #####

    # editing Parameter
    $w_paramDB = [INT]($w_paramDB * 1,10)

        }
    elseif($p_Duration -ge $minDuraton ){
        $null = $PartArr.Add($time)
        $StartPart = $time
        } 
    }
}

$PartArr
$i
$segments = ($PartArr) -join ","   #PartArr | Join-String -Separator ','

$segmentsC:

C:\ffmpeg\bin\ffmpeg.exe -i "C:\mp3\test.mp3" -f segment -segment_times $segments "C:\mp3\output_silc_%03d.mp3"


  


• ffmpeg not using wildcard properly from batch script [closed]

  25 October 2024, by timonsku

  What I want to do is actually super simple and is working just fine if executed from within the cmd window, though it does not work when used within a batch script. The following command would normally get all .png files with the pattern anim_xxxx.png (%04d stands for 4 numbers in ffmpeg).

  



  ffmpeg -f image2 -i anim_%04d.png -vcodec mjpeg -q:v 0 -r 25 foo.avi


  



  Now the error I get is with the wildcard for my image sequence and I have no clue what the problem is. Using another wildcard like * gives me the same error.

  



  


  [image2 @ 000000000033e8c0] Could find no file with with path
 'anim_render.bat4d.png' and index in the range 0-4
 anim_render.bat4d.png: No such file or directory

  


  



  does %04d resemble any variable in a batch file that does not exist outside of batch files? I could not find any similar cases so far.

  


• run ffmpeg from PHP web script

  18 February 2014, by it6

  I need to manage the recording/capture of a website mindwhile it is running a slide-show to get videos form these slides.

  My approach is:

  <?php 
  
  
  
  define('FFMPEG_LIBRARY', '/usr/bin/ffmpeg ');
  
  
  
  $ffmpegcmd = "ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/output.mpg";
  
  
  
  shell_exec($ffmpegcmd);  
  
  
  
  ?>

  But i get this error from php error log:

  [x11grab @ 0x81e8aa0] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600
  
  No protocol specified
  
  No protocol specified
  
  [x11grab @ 0x81e8aa0] Could not open X display.
  
  :0.0: Input/output error

  Similar command from console run good.

  Please, any help to get display and be able to control ffmpeg from browser php script?

  Thanks in advance.

  ---

  thanks for your time.

  I got rid the X display error, but not I still haven't got the capture.

  Using xvfb I get an unknown file at /tmp written by www-data user:
   rw-r—r— 1 www-data www-data 11252 Sep 12 09:49 server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm

  Running startx I got also an unknown file at /tmp
   rw------- 1 www-data www-data 59 Sep 12 09:53 serverauth.oLcFlG7tXC

  any of both grow in size so it is not capturing anything. The content is some binary thing.
  What are those files about?

  What I am trying is to write a script in which I can control the time ffmpeg is capturing the desktop to create a video from a jquery slide displayed on a website.

  My try from console is closer, but if I can do it by browser I will be able to know when to stop sending an AJAX request once the slide is finished.

  This is my try from console:

  #!/bin/bash
  
  
  
  # start the slide website: I will need to change it to control by querystring the language and course level
  
  firefox http://www.languagecourse.net/vocabulary-trainer.php &
  
  # start recording: I will need to adjust the frame to capture
  
  ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/output2.mpg &
  
  # since I can't control the time a course takes I pause an arbitrary time
  
  sleep 5
  
  # look for the capture PID and close it
  
  for i in $(ps aux | grep ffmpeg | sed "s/  */#/g" | cut -f2 -d#)
  
  do
  
    echo "proceso $i killed"
  
    kill -9 $i
  
  done

  I wonder once the website is opened I can continue doing the control from AJAX, but not know if I will be able to get the ffmpeg PID to stop the command.

  I will appreciate any kind of comments.

  Regards,
  ·_-