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• Naming FFMpeg output file after Container Conversion

  29 juin 2023, par Clippers

  I repackage .mkv and .avi to .mp4 using this command.

  


  setlocal enabledelayedexpansion
for %%a in ( "*.mkv" "*.avi" ) do (
(ffmpeg -i "%%a" -c:v copy -c:a copy -y "%%a.mp4"))


  


  The problem is my output files get named filename.mkv.mp4 or filename.avi.mp4 How do I declude the .mkv/.avi part ?

  


  I've found a batch file that finds filenames containing any keyboard key or combination and removes them, which I provide for anyone who needs to remove/replace characters appearing anywhere in a filename.

  


  I use this batch file to remove the .mkv, .avi which appear anywhere in the filename. But.. a space is left in place of .mkv. I recently found the fix for removing the .mkv not leaving a space, which is at the bottom.

  


  setlocal enabledelayedexpansion
for /f "usebackq delims=" %%N in (`dir /s /b`) do 
(
set var=%%~nN
set var=!var:^.mkv= !
set var=!var:%%= !

if not "!var!"=="%%~nN" (
  if not exist "%%~dpN!var!%%~xN" (
      echo "%%N" --^> "!var!%%~xN"
      ren "%%N" "!var!%%~xN"
    ) else (
      echo File "!var!%%~xN" ^(from %%N^) already 
exists.
    )
  )
)


  


  To remove .mkv and not replace it with a space, all that I had to do was to remove the space right before the first occurrence of explanation point.
By the way, this file will not remove the last period in a file name. Also, if you want to delete more keyboard keys, then add more lines right below them. Two lines for each thing you want removed. You can use any keyboard character. For example, to remove .mkv not leaving a space ; and, replace all & with a space, use :

  


  set var=!var:^.mkv=!
set var=!var:%%= !
set var=!var:^&= !
set var=!var:%%= !


  


  Finally, I didn't write this script but since I did not document it's originator, I don't want to take credit for its authenticity.

  


• Redirecting the output of the result of a command to FFMPEG (Android)

  16 avril 2020, par DepressingUtopian

  Is there a way to save the result of the FFMPEG command in RAM without saving to disk ?
I am developing a video editor on Android, and I need to apply filters to the video in real time, displaying the result to the user. If done in a standard way, then a delay occurs, since the data is flushed to disk. The user must select a piece of video, select a filter and play it with the filter already applied.

  



  I use the library :https://github.com/tanersener/mobile-ffmpeg

  



  Thanks for answers !

  


• Anomalie #3625 : Utilisation de classe "namespacée" en tant que filtre.

  12 février 2017

  Je pense qu’on peut simplifier encore plus pour les namespaces, et gérer aussi le cas "name\space\fonction".
  Les méthodes de classes sont forcément statiques pour être appelées en tant que filtre de la sorte.
  Par conséquent, tester is_callable(array("name\space\Classe::methode")) est correct.

  On obtiendrait quelque chose comme :
  

          // fonction ou name\space\fonction
          if (is_callable($f)) 
              return $f ;
          
          // méthode statique d’une classe Classe::methode ou name\space\Classe::methode
          elseif (false === strpos($f, ’: :’) and is_callable(array($f))) 
              return $f ;