FFmpeg - Loop all vids, add thumbnail, and encode with x265

rem this script will loop all mkv files in folder
rem it will create a single jpg from the mkv video found and embed it in the output video
rem it will rename the video output by appending the text "(1080p)" to the end of file name
rem at it will -map the video stream and name the stream "set title="%%~nI" (mkv video's name)
rem it will capture audio stream 0:2 and name it "Surround 5.1 (DTS)"
rem it will re-encode audio stream 0:2 to eac encoder
rem it will delete the jpg at the end of encoding

@echo off
setlocal enabledelayedexpansion
prompt $g
color 0a

pushd "%~dp0"

set FF=C:\MAB\local64\bin-video\ffmpeg.exe

:: create cover art jpg file
for %%G in (*.mkv) do (
%FF% -hide_banner -ss 30 -y -i "%%G" -vframes 1 -an cover.jpg
)

:: run ffmpeg x265
for %%I in (*.mkv) do (
set fname="%%~nxI"
set title="%%~nI"
set fout="%%~nI(1080p).mkv"
call :runFF !fname! !title! !fout!
del /s /q *.jpg
pause
goto:eof
)

:runFF
%FF% ^
-y ^
-i "%~1" ^
-attach cover.jpg ^
-map_metadata 0 ^
-map_chapters 0 ^
-metadata title="%~2" ^
-map 0:0 -metadata:s:v:0 language=eng -metadata:s:s:0 language=eng -metadata:s:s:0 title="English" -metadata:s:t:0 filename="cover.jpg" -metadata:s:t:0 mimetype="image/jpeg" ^
-map 0:2 -metadata:s:a:0 language=eng -metadata:s:a:0 title="Surround 5.1 (DTS)" ^
-c:v libx265 -preset medium -crf 20 -vf "scale=1920:-1" -threads 0 ^
-c:a ac3 -b:a 640k -ac 6 ^
"%~3"
exit /b