A colourful media converter for Windows

ffmpeg_all.bat

@echo off
setlocal EnableDelayedExpansion
cls

echo  ALL TO .MP4 
echo.

set looking=".\*.avi"
set total=0
set current=0
set converted=0
set failed=0

if not "%1"=="" (
  set looking=%1
)

for %%f in (%looking%) do (
  set /a total+=1
  echo   - %%~nf
)

if %total%==0 (
  echo  There are no files... 
) else (
  echo.
  echo  There are !total! files to convert! 
  echo.

  for %%f in (%looking%) do (
    set /a current+=1
    echo  Converting ^(!current!/!total!^)  '%%~nxf'
    echo.
    ffmpeg -loglevel quiet -stats -i %%~dpnxf %%~dpnf.mp4 > NUL
    echo.
    if not errorlevel 1 (
      set /a converted+=1
      echo  Success  '%%~nf.mp4'
    ) else (
      set /a failed+=1
      echo  Failure  '%%~nxf'
    )
    echo.
  )

  echo  !converted! files were converted^^!  !failed! failed  
)

echo.
echo Press any key to exit...
pause > NUL