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• How to apply complex filters more than once with different parameters while avoiding "too many inputs" errors in ffmpeg ?

  15 mai 2019, par Hugh Walxet

  I’m trying to apply the displace complex filter more than once in a video, at specific intervals with no proportional relationship. In each instance, I want to apply the displace filter with slightly different parameters. If I list it twice in the commands for the complex_filter, I get an error saying I have too many inputs.

  I might as well ask, separately, how I could apply the same filter with the same parameters more than once in a video, without re-iterating the same filter more than once in the command line. Put differently, how do I run a filter as specific times without writing the command several times sequentially, each with a different trigger time ?

  C :\Users\Me>ffmpeg -i c :\users\Me\desktop\house2.mp4 -i c :\users\Me\desktop\house3.mp4 -i c:users\Me\desktop\house4.mp4 -filter_complex "shuffleframes=enable=’between(t,21,27)’:mapping=0 9 2 1 10 5 8 6 7 4 3, shuffleframes=enable=’between(t,3,7)’:mapping=0 4 9 1 10 5 8 6 2 7 4 3, shuffleframes=enable=’between(t,15,19)’:mapping=0 6 2 1 10 5 8 3 7 4 9, [0][1][2] displace=enable=’between(t,9,10)’:edge=wrap, [0][1][2] displace=enable=’between(t,20,21)’:edge=smear" c :\users\Me\desktop\houseglitch.mp4

• Anomalie #3988 : meta cache_signature trop restrictive

  4 septembre 2017, par Emmanuel Dreyfus

  cedric - a écrit :

  Le cas qui peut être problématique est celui de la base répliquée
  entre plusieurs serveurs, mais là on entre dans un autre sujet et
  pour qu’il y ait collision cela supposerait que le dossier tmp/cache
  est commun aux serveurs.

  On se heurte au problème dans ce contexte, mais chaque serveur
  a son dossier cache. La base de donnée est partagée, sauf certaines
  tables qui restent locales (jobs ; syndic, urls, transactions, visites, referers).

  Comme chaque machine a son cache, elle tente d’écrire la meta cache_signature avec une valeur qui rentre en conflit avec celle des autres, d’où l’idée d’avoir un nom de meta différente pour chaque cache.

• How do I confirm if a php shell_exec was completed

  21 juillet 2015, par iamthestreets

  I am running a php script using the cPanel Cron Jobs. The script is using shell_exec to convert a video using ffmpeg. It executes the script and everything is working but it is not sending me the email. I am basically trying to get the output of the shell_exec to start another function in the php script so I wanted to send my self the email to make sure I am getting the output.

  For example I wrote :

  $command = "ffmpeg -i $og_video -b 1500k -vcodec libx264 -vpre slow -vpre baseline -g 30 $mp4_video";
  
  
  
  //EXECUTE THE CONVERSION
  
  $output = shell_exec($command);
  
  echo $output;

  I also tested the email by removing the shell_exec and just echo the $command variable. This will send me the full string in an email.

  What I am trying to accomplish is basically if the shell_exec executed then do something else.

  How do I check if the shell_exec was completed ?