c:\Program Files\Serviio\lib>ffmpeg.exe -i d:\tmp\8.mp4 -c:v mpeg2video -q:v 2 d
:\tmp\8.mpg

@echo off
for %%i in (*.*) do ffmpeg -i "%%i" -vf scale=-1:720 -c:v libx264 -crf 18 -preset fast -c:a copy "done\%%i"