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• How to create bash script with ffmpeg to stitch together AVI files, then rotate 180 degrees ?

  25 septembre 2022, par Maude Rozencrance's Cat

  I'm trying to make a bash script in linux to stitch a bunch of AVI files together then rotate the vid 180 degrees. My code works, but without the rotation part.

  


  >videos.txt

files=DSCF*.AVI

for f in $files
do
    #make list of vids, copy to videos.txt
    echo "file '$f'" >> videos.txt;
    echo "duration 10.0" >> videos.txt;
    
done

#stitch all vids together
ffmpeg -f concat -safe 0 -i videos.txt -c copy bigvid.AVI


  


• Bash script to convert imgs in subfolders to video (using ffmpeg and Ubuntu)

  2 novembre 2015, par mcExchange

  I’m trying to convert all files in folders given by

   allFolders.txt
  
  > head folderNames.txt
  
  0001 
  
  0002 
  
  0003 
  
  0004 
  
  0005 
  
  ...

  to a video using ffmpeg

  ffmpeg version 2.2.3 Copyright (c) 2000-2014 the FFmpeg developers  built on Apr 20 2015 13:38:52 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
  configuration: --prefix=/home/myUsername/usr/local --enable-nonfree --enable-gpl --enable-pic --enable-shared --enable-libx264 --disable-vaapi

  According to some answers here on stackoverflow I wrote the following bash script :

  #!/bin/bash
  
  while read p; do
  
      cd "$p"
  
      ffmpeg -f concat -i "allImgNames.txt" -framerate 30 -c:v libx264 -profile:v high -crf 20 -pix_fmt yuv420p output.mp4
  
      cd -
  
  done < folderNames.txt

  where allImgNames.txt is a text file containing all the image names.

  The strange thing is that it works for a few videos but for the rest of the filelist it fails saying allImgNames.txt: No such file or directory, which is not true. I checked all paths several times. Also I can execute the ffmpeg ... command above manually without problems.
  I don’t know what I’m doing wrong. All file / folder names are normal (no special characters). Maybe I don’t understand enough about bash or ffmpeg.

• Convert cmd ffmpeg script to shell

  30 octobre 2015, par uran M

  its very simple code for cmd but i cant get how its should work on my nas with shell

  Please help to convert script :

  @echo off
  
  setlocal enableextensions enabledelayedexpansion

  Settings

  set sWorkFolder=d:\workfolder
  
  set sSourceFolder=%sWorkFolder%\waiting-to-convert
  
  set sDestFolder=%sWorkFolder%\done
  
  set sBackupFolder=%sWorkFolder%\trash
  
  set sPath2ffmpeg=%sWorkFolder%\ffmpeg\bin\ffmpeg.exe

  Start cycle

  for /r "%sSourceFolder%" %%i in (*.mp4) do call :action "%%i"
  
  
  
  endlocal
  
  exit /b
  
  
  
  :action
  
  setlocal enableextensions enabledelayedexpansion
  
  
  
  set "sSourcePath=%~dp1"
  
  set "sDestPath=%sDestFolder%!sSourcePath:%sSourceFolder%=!"
  
  if not exist "%sDestPath%." md "%sDestPath%"
  
  set "sDestFile=%sDestPath%%~n1.720p%~x1"
  
  
  
  "%sPath2ffmpeg%" -i "%~f1" -vcodec h264 -vf "scale=trunc(oh*a/2)*2:min(720p\,ih)" -b:v 2000k -preset faster -acodec copy -y "%sDestFile%"
  
  
  
  set "sBackupPath=%sBackupFolder%!sSourcePath:%sSourceFolder%=!"
  
  if not exist "%sBackupPath%." md "%sBackupPath%"
  
  
  
  move /y "%~1" "%sBackupPath%"
  
  
  
  endlocal
  
  exit /b