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• How can start a process and stop the process if "error" string appear in the console output strings in one line commands set

  25 janvier 2018, par Thm Lee

  Now I want one line cmd commands set which start a process and monitor the consol output strings stream. And so if error message appear in the process’s console output, then could stop the process immediately.

  For example, I tried below commends sets, but failed. It seems find command didn’t get any strings streams in which search key word "error"

  ffmpeg "endcoding process options set" | find "error" && exit

  or,

  ffmpeg "endcoding process options set" 2>&1 find "error" && exit

  Is there any solutions about this ?

  Thanks in advance

• mismatching process id from process execution. Why do they not match and how to fix script to get the correct pid ?

  26 février 2013, par buggedcom

  I'm running a script that executes ffmpeg and outputs stout to a temp file. Along side the output from ffmpeg I'm sending two tokens. one a marker for a failed execution. The other for marking when ffmpeg is completed. I'm trying to output the process id back to the executing script (which is php) however the process id being returned is not that of ffmpeg, rather the bash script.

  The script is as below.

  ((/opt/local/bin/ffmpeg -i '/Users/ollie/Sites/@Projects/PHPVideoToolkit/v2/git/examples/media/BigBuckBunny_320x180.mp4' -y -t '20' -strict 'experimental' -s '142x80' -aspect '16:9' -b:v '10000k' '/Users/ollie/Sites/@Projects/PHPVideoToolkit/v2/git/examples/output/test-1361797899.mp4' && echo '') || echo '' '') 2>&1 > '/Users/ollie/Sites/@Projects/PHPVideoToolkit/v2/git/examples/tmp/phpvideotoolkit_GmxT4T' 2>&1 & echo $!

  Example output from the script is as follows :

  [19] 19316

  However querying ps. The process id of ffmpeg is different. For example :

  Olivers-Mac-Pro:~ ollie$ ps
  
    PID TTY           TIME CMD
  
  19025 ttys002    0:00.00 -bash
  
  19026 ttys002    0:00.00 -bash
  
  19316 ttys002    0:00.00 -bash
  
  19317 ttys002    0:00.00 -bash
  
  19318 ttys002    0:46.56 /opt/local/bin/ffmpeg -i /Users/ollie/Sites/@Projects/PHPVideoToolkit/v2/git/examples/media/BigBuckBunny_320x180.mp4 -y -strict experimental -s 142x80 -aspect 16:9 -b:v 10000k /Users
  
    849 ttys003    0:00.12 -bash
  
   7558 ttys004    0:00.03 -bash

  You see that the process id returned by the script does not match the ffmpeg process id given by ps. Why is this and how can I ammend the original script to get the correct process id ?

• I cannot find bin folder fmpeg when downloading from official site

  13 janvier 2017, par Moudiz

  I want to run and use ffmpeg I download it from this site https://ffmpeg.org/

  and I coudlnt find bin folder as in the tutorials they mentioned i need bin to execute the command

  

  but if i download from site https://ffmpeg.zeranoe.com/builds/ i find bin folder , so what is the difference between the 2 ?