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• How to convert mp4 to flv a bunch of files ?

  21 avril 2013, par jerdiggity

  Assuming I had a bunch of videos sitting inside the directory /home/user/videos/awaiting_conversion how would I go about using cron to run a script similar to this one to batch convert each video into a different format ?

  /bin/sh -c $'nice /usr/bin/ffmpeg -i \044'\'$'/home/user/videos/awaiting_conversion/video_file_1.mp4'\'$' -s \044'\'$'480x320'\'$' -vcodec libx264 -acodec libmp3lame -ab \044'\'$'64k'\'$' -vpre fast -crf \044'\'$'30'\'$' -ar \044'\'$'22050'\'$' -f flv -y \044'\'$'/home/user/videos/converted/video_file_1.flv'\'$''

  The above script works fine for a single conversion, but :

  1. It assumes that the name of the video is static/known (which will not be the case when batch converting).
  2. It assumes that there is only one video to convert (which may or may not be the case), i.e. there's no "loop".
  3. It leaves the original file in place instead of deleting it (which is what I would want to happen to prevent duplicate conversions).

  The ultimate question would be how do I run that script for each video that exists inside /home/user/videos/awaiting_conversion, passing the file name as a variable ?

• Shell Script - Issue while assigning command from shell script

  18 novembre 2013, par Simon

  I want to build a script for converting a set of .avi movies from a folder to .wmv movies by using the ffmpeg converter.

  My script has the following content :

  for file in *.avi
  
  do
  
  replace_string="wmw";
  
  new_file=${file/avi/$replace_string};
  
  #echo $new_file
  
  #echo $file
  
  ffmpeg -i $file -b:v 2500k /home/alin/WmvMovies/$new_file
  
  done

  However, it doesn't work. I receive the following error :

  [NULL @ 0x1849040] Unable to find a suitable output format for '/home/alin/WmvMovies/Teo_Pose90.wmw'
/home/alin/WmvMovies/Teo_Pose90.wmw: Invalid argument

  However, if I try this independently, it works. If I introduce into shell the following command :

  ffmpeg -i Teo_Pose90.avi -b:v 2500k /home/alin/WmvMovies/Teo_Pose90.wmv

  Can someone please explain to me why do I get this behaviour ?

• ffmpeg in not working in php exec()

  10 septembre 2016, par TNTWap WapChat

  FFMPEG is not working in exec but its working when using ssh on that us
  but other commands work with exec !

  Here is the code :

  exec("ffmpeg -i /home/setare/public_html/kanalmanager/wt/230307754.mp4 -i /home/setare/public_html/kanalmanager/wt/230307754_logo.png \
  
   -filter_complex  "[1]colorchannelmixer=aa=1,scale=iw*1.4:-1[wm];[0][wm]overlay=x=(W-w)/2:y=(H-h)/2" /home/setare/public_html/kanalmanager/wt/230307754_send.mp4 -y");