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• Evolution #4754 (Nouveau) : Mettre à jeu le jeu des icônes de extensions

  30 avril 2021

  Suite à la refonte des icônes en SVG, les icônes des extensions des documents (pdf, excel, ....) paraissent vraiment archaïques.

  Il faudrait intégrer un nouveau jeu plus moderne sans doute issu d’un projet opensource d’OS.
  Je serai pour adopter un style neutre et plat pour rester dans la nouvelle charte mais aussi pour l’utilisation de ces images via #LOGO_DOCUMENT dans l’espace publique.

  Question bonus :
  Actuellement on propose le format PNG et SVG .
  Doit-on conserver le vignette png notamment pour les squelettes publiques ?

• Python Lambda function and ffmpeg command with stdout from jpg to ts file

  28 juillet 2021, par Sflagg

  I have a AWS Lambda Python function setup to process jpg and convert it to a ts file.

  


  I followed these instructions https://aws.amazon.com/blogs/media/processing-user-generated-content-using-aws-lambda-and-ffmpeg/ but changed the command from vfr to cfr conversion to a jpg to ts conversion.

  


  This is the command I am using

  


  ffmpeg_cmd = "/opt/bin/ffmpeg -r 30000/1001 -loop 1 -i \"" + s3_source_signed_url + "\" -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=48000 -t 30 -vcodec libx264 -crf 23 -s 1920x1080 -r 30000/1001 -g 150 -pix_fmt yuv420p -acodec aac -b:a 96k -ar 48000 -"

  


  Everything else is basically the same from the AWS article besides having s3 triggers in my Lambda look for jpeg and jpg suffixes.

  


  But this results in 0 byte ts file.

  


  I have a hunch that I need to modify the command that has a seekable output format (e.g. mpegts) when writing to stdout ; currently my command is likely not working for stdout and that is why I get an empty ts file. But I am having trouble formatting the command correctly. Any help with this would be greatly appreciated !

  


• Creating Thumbnails From Ffmpeg Hangs Php

  30 octobre 2012, par Piyush Arora

  I have been working on a php webservice, which receives videos(uploaded) from iphone and upload them to Amazon cloudFront. After uploading videos, I need to generate thumbnails for video from the Amazon link generated. I am using ffmpeg with shell_exec command for it. Here is the code for the same :

  public function createThumbnail($userId,$fileUrl,$imageName){
  
      //$imageUrl = 'http://184.168.116.177:81/json_api/json/bin/';
  
      if(!is_dir("images/".$userId)){
  
          mkdir("images/".$userId);
  
      }
  
      // path of installed ffmpeg
  
      $ffmpeg = $_SERVER['DOCUMENT_ROOT'] .'bin/ffmpeg';
  
      $cmd = "$ffmpeg  -itsoffset -1 -i $fileUrl -vcodec mjpeg -vframes 1 -an -f rawvideo -s 320x240 images/".$userId."/".$imageName;
  
  
  
      shell_exec($cmd);
  
  
  
      return "images/".$userId."/".$imageName;
  
  }

  The above code generates the thumbnail, but script does not execute after shell_exec command. So, there is no response sent to iphone end about the thumbnail link. This function works well video is uploaded from web browser of pc. If I comment, shell_exec command, then response is sent to iphone end, but obviousely image is not created.

  Thanks in advance.