Recherche avancée

Sur d’autres sites (8406)

• Evolution #3962 (Nouveau) : Générer des JPEG progressifs

  18 juin 2017, par Michel Bystranowski

  Le format JPEG propose un encodage « progressif » qui permet aux navigateurs d’afficher une version peu détaillée de l’image avant la réception complète, ce qui améliore l’expérience utilisateur sur des mauvaises connections. En cherchant un peu je ne trouve pas de contre-indications. Les vieux IE ne supportent pas ce format, mais affichent quand même les images après réception complète, donc pas de changement par rapport aux JPEG « classiques ».

  La librairie GD permet de générer ce genre de JPEG très facilement, il suffit d’appeler la fonction imageinterlace (https://secure.php.net/manual/en/function.imageinterlace.php) avant de générer le JPEG.

  Du coup il me semble qu’on pourrait utiliser ça dans SPIP, en ajoutant simplement un petit imageinterlace($img, 1); dans la fonction _image_imagejpg qui se trouve dans ecrire/inc/filtres_images_mini.php.

• bash loop through list of file paths - characters get removed when sending to ffmpeg [duplicate]

  9 octobre 2018, par Brad Johnson

  This question already has an answer here :

  • Bash while loop stops for no reason ?
    
    1 answer
    

  I have a text file that contains a list of paths to flac files I want to convert to wav. Here is a small section of it :

  /mnt/nfs/Music/Rob D/1995 - Clubbed To Death/Rob D - 02 - Clubbed To Death _Kurayamino Variation_.flac
  
  /mnt/nfs/Music/Blonde Redhead/2000 - Melody of Certain Damaged Lemons/11 - For the Damaged Coda.flac
  
  /mnt/nfs/Music/I Monster/2001 - Daydream In Blue/01 - Daydream In Blue.flac
  
  /mnt/nfs/Music/Moby/2002 - Extreme Ways/01 - Extreme Ways.flac
  
  /mnt/nfs/Music/RJD2/2002 - Deadringer/01 - The Horror.flac
  
  /mnt/nfs/Music/RJD2/2002 - Deadringer/03 - Smoke & Mirrors.flac
  
  /mnt/nfs/Music/RJD2/2002 - Deadringer/06 - Ghostwriter.flac
  
  /mnt/nfs/Music/RJD2/2002 - Deadringer/10 - Chicken-Bone Circuit.flac
  
  /mnt/nfs/Music/FC Kahuna/2003 - Hayling/01 - Hayling _Original_.flac
  
  /mnt/nfs/Music/Lamb/2003 - Between Darkness and Wonder/04 - Angelica.flac

  I’m trying to loop through it like so :

  while read -r line; do
  
   wavfile=$(basename "$line")
  
   wavfile="${wavfile%.*}"
  
   ffmpeg -i "$line" "$2/$wavfile.wav"
  
  done <$1

  ...where $1 is where I would pass the name of the text file and $2 is the destination directory.

  Here is the output with the irrelevant ffmpeg junk pruned out :

  Input #0, flac, from '/mnt/nfs/Music/Rob D/1995 - Clubbed To Death/Rob D - 02 - Clubbed To Death _Kurayamino Variation_.flac':
  
  ...
  
  Output #0, wav, to '/mnt/gray/Clubbed To Death/Rob D - 02 - Clubbed To Death _Kurayamino Variation_.wav':
  
  ...
  
  /nfs/Music/Blonde Redhead/2000 - Melody of Certain Damaged Lemons/11 - For the Damaged Coda.flac: No such file or directory
  
  ...
  
  Input #0, flac, from '/mnt/nfs/Music/I Monster/2001 - Daydream In Blue/01 - Daydream In Blue.flac':
  
  ...
  
  Output #0, wav, to '/mnt/gray/Clubbed To Death/01 - Daydream In Blue.wav':
  
  ...
  
  nt/nfs/Music/Moby/2002 - Extreme Ways/01 - Extreme Ways.flac: No such file or directory
  
  ...
  
  Input #0, flac, from '/mnt/nfs/Music/RJD2/2002 - Deadringer/01 - The Horror.flac':
  
  ...
  
  Output #0, wav, to '/mnt/gray/Clubbed To Death/01 - The Horror.wav':
  
  ...
  
  nt/nfs/Music/RJD2/2002 - Deadringer/03 - Smoke & Mirrors.flac: No such file or directory
  
  ...
  
  Input #0, flac, from '/mnt/nfs/Music/RJD2/2002 - Deadringer/06 - Ghostwriter.flac':
  
  ...
  
  Output #0, wav, to '/mnt/gray/Clubbed To Death/06 - Ghostwriter.wav':
  
  ...
  
  nt/nfs/Music/RJD2/2002 - Deadringer/10 - Chicken-Bone Circuit.flac: No such file or directory
  
  ...
  
  Input #0, flac, from '/mnt/nfs/Music/FC Kahuna/2003 - Hayling/01 - Hayling _Original_.flac':
  
  ...
  
  Output #0, wav, to '/mnt/gray/Clubbed To Death/01 - Hayling _Original_.wav':
  
  ...
  
  /nfs/Music/Lamb/2003 - Between Darkness and Wonder/04 - Angelica.flac: No such file or directory

  If you pay attention to the paths that ffmpeg reports don’t exist, you’ll see that a seemingly random number of characters has been removed from the beginning. This appears to happen on even numbered lines, but odd numbered lines work. I can only reproduce this behavior when using ffmpeg. If I replace the ffmpeg line with a simple echo statement, every file path is shown to be correct. How can this be ?

  Other suggestions of accomplishing this are also welcome, however I do need the files processed in the order by which I have them listed in the file.

• Can't find ffmpeg in phpinfo()

  11 août 2012, par Alkam

  Yesterday, I downloaded a Video Sharing Website Script from clip-bucket.com. When I started to install this script, I couldn't find ffmpeg in my phpinfo().

  This is my server :

  • Windows Server 2003
  • Wampserver (32-bit with PHP 5.4) 2.2E
  • Apache 2.2.22 – Mysql 5.5.24 – PHP 5.4.3 XDebug 2.1.2 XDC 1.5 PhpMyadmin 3.4.10.1 SQLBuddy 1.3.3 webGrind 1.0

  What should I do ?