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• Windows Batch Script For loop

  14 avril 2013, par Dobbo1989

  I am new to batch scripts, I am trying to figure out how to create a script that will take all video files in a folder videos*.* and then use ffmpeg on each one and output the files to converted*.mp4 where the filenames are the same.

  However I cant figure out how to get the for loop working so that I can extract the name and extension type of file I am processing.

  for %%f IN (videos\*.*) DO (convert.bat %%f)

  convert.bat

  ffmpeg.exe -i %1 -f mp4 converted\%~n.mp4

  I have tried both with and without double quotes however it wont recognise the file.

• Zsh script using formatted date string in FFMPEG command [closed]

  1er juillet 2024, par coco

  In my zsh script, I am receiving a string that represents a Unix epoch, like :

  


  myTimestamp="1719742786"


  


  I want to change that date into a formatted string, and then store it in a variable so it can be used in an upcoming ffmpeg script. I'm doing it this way :

  


  theDate=$(date -u -r "$myTimestamp" "+%b %d, %H:%M:%S")
echo "$theDate"


  


  which prints to my screen what I want :

  


  Jun 30, 06:19:48


  


  but when I try to use this variable in my ffmpeg script, I get errors :

  


  ffmpeg -y -i "$file" -vf \
        "drawtext=text='$theDate':fontcolor=gray:fontsize=$fontSize:x=$width:y=$height:" \
        "$output"


  


  Note that if I change out '$theDate' in the script (to something like '$myTimestamp'), I do not get errors.

  


  What I do get, along with Error initializing filters, is this (possibly important ?) error :

  


  


  Both text and text file provided. Please provide only one

  


  


  Note I am on MacOS v14.5. The man date mentions The date utility is expected to be compatible with IEEE Std 1003.2 (“POSIX.2”).  With the exception of the -u option, all options are extensions to the standard.

  


  My full script :

  


  #!/bin/zsh
outDir="printed"
width=200
height=650
fontSize=95

for file in initial/*.png; do
    filename=$(basename "$file")
    prefix="${filename%.*}"
    theDate=$(date -u -r "$prefix" "+%b %d, %H:%M:%S")
    output="$outDir/$filename"

    echo "$theDate"

    ffmpeg -y -i "$file" -vf \
    "drawtext=text='$theDate':fontcolor=gray:fontsize=$fontSize:x=$width:y=$height:" \
       "$output"

done
exit


  


• Convert simple Bash script to PowerShell ?

  9 septembre 2019, par vulcan raven

  I have pulled the Bash script from here, which checks the AVI file for bad frames using ffmpeg and cygwin extension. I am able to execute the code in Mingw. I put ffmpeg.exe (ren ffmpeg), cygwin1.dll & cygz.dll in Mingw’s bin dir (/c/mingw/bin/). Now, I am looking to port this bash code to PowerShell. Can anyone shed some PowerShell light on this one ?

  Script : (path : /c/mygw/bin/AviConvert)

  #!/bin/bash
  
  
  
  FFMPEG="ffmpeg"
  
  LIST=`find | grep \.avi$`
  
  
  
  for i in $LIST; do
  
      OUTP="$i.txt"
  
      OUTP_OK="$i.txt.ok"
  
      TMP_OUTP="$i.tmp"
  
      if [ -f "$OUTP" -o -f "$OUTP_OK" ] ; then
  
      echo Skipping "$i"
  
      else
  
      echo Checking "$i"...
  
      RESULT="bad"
  
      ffmpeg -v 5 -i "$i" -f null - 2> "$TMP_OUTP" && \
  
          mv "$TMP_OUTP" "$OUTP" && \
  
          RESULT=`grep -v "\(frame\)\|\(Press\)" "$OUTP" | grep "\["`
  
      if [ -z "$RESULT" ] ; then
  
          mv "$OUTP" "$OUTP_OK"
  
      fi
  
      fi
  
  done