Foi tão simples assim:
@ECHO OFF
SETLOCAL
set /p Input= Drop file here, and click enter.
set ffmpeg=C:\Windows\User\ffmpeg.exe
set file=%Input%
FOR %%i IN (%file%) DO (
ECHO filedrive=%%~di
ECHO filepath=%%~pi
ECHO filename=%%~ni
ECHO fileextension=%%~xi
ECHO %filename%
)
%ffmpeg% -i %Input% -an -c:v libx264 -preset medium -crf 22 "%%~di%%~pi%%~ni.mp4"
pause