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• Automator shell script (using ffmpeg) won't run on other machine

  24 mai 2014, par kava

  I have an Automator patch that runs a shell script that calls ffmpeg on a 10.9.3 mac.

  I just try to call it via

  ffmpeg

  for test reasons without any arguments.

  but it returns

  ffmpeg: command not found. 

  But I can open ffmpeg regularly from terminal AND I can run the script on my other machine (10.9.2)

  What’s wrong ?

  EDIT : I also tried to add :

  /opt/local/bin

  in the shell script to the path variable, but it still won’t run.
  also

  /opt/local/bin/ffmpeg -arguments....

  won’t run

• How do I run a shell script through a "for" or "foreach" loop in order to batch convert ?

  28 mars 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 ?

• ffmpeg not using wildcard properly from batch script

  20 mars 2013, par Paul Green

  What I want to do is actually super simple and is working just fine if executed from within the cmd window, though it does not work when used within a batch script. The following command would normally get all .png files with the pattern anim_xxxx.png (%04d stands for 4 numbers in ffmpeg).

  ffmpeg -f image2 -i anim_%04d.png -vcodec mjpeg -q:v 0 -r 25 foo.avi

  Now the error I get is with the wildcard for my image sequence and I have no clue what the problem is. Using another wildcard like * gives me the same error.

  [image2 @ 000000000033e8c0] Could find no file with with path
  'anim_render.bat4d.png' and index in the range 0-4
  anim_render.bat4d.png : No such file or directory

  does %04d resemble any variable in a batch file that does not exist outside of batch files ? I could not find any similar cases so far.