Batch Convertion of media files

The "ffmpeg.exe" file can be used to convert a media file from one type to another.

To convert all media files in all subdirectories, one way is to make the converting program  "ffmpeg.exe" recursively walking into the directories from the current directory.

The following is the batch file for recursively converting:

echo converting
REM set /D+(*.*) for directory; set /R for walking from current directory
FOR /D /R %%a in (*.*) DO CALL :subconvert "%%a"
echo convertion complete
pause
GOTO:EOF

:subconvert
cd /D %1
echo convert files in %1
for /F "usebackq delims==" %%d in (`dir /b *.dat`); do (
    ffmpeg.exe -i "%%d" -target vcd "%%~nd.mp4")

The batch file can be executed by a short-cut with "Target" is the location of the batch file and the "Start in" is the parent directory to be performed convertion.