Pad a video with an image using ffmpeg

padVideo.bat

rem you need to download ffmpeg from here:
rem https://ffmpeg.org/download.html

rem This batch file pads a
rem a video with an given image

rem its called like this
rem padVideo.bat videoname.mp4 paddingImage.jpg 2:00:00
rem this would pad a 1920x1080 video to 2:00:00.

@echo off

ffmpeg -i %1 -loop 1 -t %3 -i %2 -f lavfi -t 1 -i anullsrc -filter_complex "[1:v]scale=1920x1080:force_original_aspect_ratio=decrease,pad=1920:1080:'(ow-iw)/2':'(oh-ih)/2'[i];[0:v][0:a][i][2:a] concat=n=2:v=1:a=1[v][a]" -c:v libx264 -c:a aac -map "[v]" -map "[a]" videoOut.mp4