Resize movie image size using ffmpeg

convResizeMp4.bat

rem @echo off
setlocal ENABLEDELAYEDEXPANSION

set FFMPEG="C:\\asd\\tool\\ffmpeg-20170827-ef0c6d9-win64-static\\bin\\ffmpeg"

set /a HEIGHT=1080

cd /d %~dp1

for %%f in (%1\*.mp4) do (
  %FFMPEG% -y -i  %%f -vf scale=-1:%HEIGHT%  %%f_out.mp4
)


pause