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• Problem with ffmpeg syntax in a for loop in batch file [duplicate]

  24 février 2019, par user1738673

  This question already has an answer here :

  • Batch character escaping
    
    4 answers
    

  My goal is to loop through my music folders, read the bitrate of each file, and if greater than 192k, convert it to 192k, then delete the original. I have working batch files that will do each task. The problem comes when I try to combine the lines from the working code. Depending on where I put the quotation marks, I get varying errors about filenames. So, I need someone who really knows how to read this code to solve the issue.

  Here are each of the working batch files. They do everything exactly as they should.

  First : Loop through files and get the bitrate

  @echo off & setlocal
  
  FOR /r %%i in (*.mp3) DO (
  
              ffprobe -v error -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "%%~fi"
  
              )
  
  ECHO Completed %~n0
  
  PAUSE

  Here is the output :

  320000
  
  320000
  
  192000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  Completed BrTestLoop6
  
  Press any key to continue . . .

  Next, the batch file for converting all MP3 files to 192k, then deleting the orginal :

  @echo off & setlocal
  
  FOR /r %%i in (*.mp3) DO (
  
                ffmpeg -i "%%~fi" -ab 192k -map_metadata 0 -id3v2_version 3 "%%~dpni_192.mp3"
  
                if not errorlevel 1 if exist "%%~fi" del /q "%%~fi"
  
              )
  
  ECHO Completed %~n0
  
  PAUSE

  I get perfect conversions at 192k and all of the originals are deleted.

  Now, the combined version :

  @echo off & setlocal
  
  
  
  FOR /R %%i in (*.mp3) DO (
  
      FOR /F "TOKENS=1 DELIMS==" %%H IN ('ffprobe -v error -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "%%i"') DO (
  
          IF %%H GTR 192000 ffmpeg -i "%%i" -ab 192k -map_metadata 0 -id3v2_version 3 "%%~dpni_192.mp3"
  
      )
  
  )
  
  
  
  PAUSE

  I get the following output :

  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Press any key to continue . . .

• Video modifications using ffmpeg and bash command

  26 février 2019, par macenike

  I have a series of 8 videos which have different number of frames, some of them lose a couple of them at the beginning. I was trying to concatenate at the beginning of the videos with less frame a copy of their first frame. Unfortunately my code either crash while comparing the length of the videos or fail to accomplish the task required. Here I add the code that I’m using.

  @ECHO off
  
  SETLOCAL EnableDelayedExpansion
  
  MKDIR COMPRESSED\
  
  MKDIR RAW\
  
  SET  j=0
  
  SET  jj=1
  
  SET max=1
  
  FOR %%a IN (*.avi) DO (
  
      SET /A j=j+1
  
      FOR /F "delims=" %%V IN ('ffprobe.exe -v error -count_frames -select_streams v:0 -show_entries stream^=nb_read_frames -of       default^=noprint_wrappers^=1:nokey^=1 ".\%%~nxa" 2^>^&1') DO SET elem[!j!]=%%V
  
  SET elem[!j!]
  
  )
  
  
  
  FOR %%a IN (*.avi) DO (
  
      IF !elem[%jj%]! GTR !elem[%max%]!(
  
          SET max=!jj!
  
      )
  
  SET /A jj=jj+1  
  
  ) 
  
  SET max
  
  
  
  SET /A x=1
  
  FOR %%a IN (*.avi) DO ( 
  
  
  
      IF "!elem[!x!]!" LSS "!elem[!max!]!" (
  
              ffmpeg -i ".\%%~nxa" -vf "select=eq(n\,0)" -q:v 3 output_image.jpg
  
              ffmpeg -y -i ".\%%~nxa" -loop 1 -i output_image.jpg -t 0.01 -s 1936x1216 ".\%%~nxa"
  
              SET elem[!x!]=elem[!x!]+1
  
              SET elem[!x!]                   
  
      )
  
  SET /A x=x+1    
  
  ) 
  
  
  
  
  
  FOR %%a IN (*.avi) DO (
  
      ffprobe -v error -count_frames -select_streams v:0 -show_entries stream=nb_read_frames ".\%%~nxa"
  
      ffmpeg -i ".\%%~nxa" -c:v libxvid -vtag xvid -qscale:v 2 -force_key_frames 1 -s 968x400 -r 100 ".\COMPRESSED\%%a"
  
      SET mystr=%%~na
  
      SET mystr=!mystr:~-1!
  
      IF !mystr! == 3 (
  
          ffmpeg -i ".\%%~nxa" -c:v mpeg4 -b:v 4M -c:a libfdk_aac -b:a 192k ".\COMPRESSED\%%~na.mp4"
  
      )
  
      IF !mystr! == 5 (
  
          ffmpeg -i ".\%%~nxa" -c:v mpeg4 -b:v 4M -c:a libfdk_aac -b:a 192k ".\COMPRESSED\%%~na.mp4"
  
      )
  
  )

• Problem with ffmpeg syntax in a looping batch file. Windows, not Ubuntu

  24 février 2019, par user1738673

  My goal is to loop through my music folders, read the bitrate of each file, and if greater than 192k, convert it to 192k, then delete the original. I have working batch files that will do each task. The problem comes when I try to combine the lines from the working code. Depending on where I put the quotation marks, I get varying errors about filenames. So, I need someone who really knows how to read this code to solve the issue.

  Here are each of the working batch files. They do everything exactly as they should.

  First : Loop through files and get the bitrate

  @echo off & setlocal
  
  FOR /r %%i in (*.mp3) DO (
  
              ffprobe -v error -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "%%~fi"
  
              )
  
  ECHO Completed %~n0
  
  PAUSE

  Here is the output :

  320000
  
  320000
  
  192000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  320000
  
  Completed BrTestLoop6
  
  Press any key to continue . . .

  Next, the batch file for converting all mp3 files to 192k, then deleting the orginal :

  @echo off & setlocal
  
  FOR /r %%i in (*.mp3) DO (
  
                ffmpeg -i "%%~fi" -ab 192k -map_metadata 0 -id3v2_version 3 "%%~dpni_192.mp3"
  
                if not errorlevel 1 if exist "%%~fi" del /q "%%~fi"
  
              )
  
  ECHO Completed %~n0
  
  PAUSE

  I get perfect conversions at 192k and all of the originals are deleted.

  Now, the combined version :

  @echo off & setlocal
  
  
  
  FOR /R %%i in (*.mp3) DO (
  
      FOR /F "TOKENS=1 DELIMS==" %%H IN ('ffprobe -v error -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "%%i"') DO (
  
          IF %%H GTR 192000 ffmpeg -i "%%i" -ab 192k -map_metadata 0 -id3v2_version 3 "%%~dpni_192.mp3"
  
      )
  
  )
  
  
  
  PAUSE

  I get the following output :

  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Argument 'noprint_wrappers' provided as input filename, but 'bit_rate' was already specified.
  
  Press any key to continue . . .

  Can anyone help, please ?