FFmpeg: Convert x264 to x265 Batch Script

@ECHO on &SETLOCAL

REM Change the working directory to your .mp4 files root folder.
CD %OneDrive%\Desktop\Vids

REM This scripts will recursively grab all mp4 files using a batch process and convert them into x265 using FFmpeg's command line (program used is ffmpeg.exe). If you don't have that you must obtain it. A good place to download and build ffmpeg.exe is with media autobuild suite on GitHub: https://github.com/jb-alvarado/media-autobuild_suite
REM Make sure to set ffmpeg.exe's folder path as an environmental variable in windows before running this script.

REM Set the below line to your root folder to recursively search for mp4 files.
SET "mp4PATH=%OneDrive%\Desktop\Vids\"

REM Create empty convert file.
COPY NUL "convert_movies.bat" >NUL 2>&1

REM Add ECHO off.
ECHO @ECHO off >>"convert_movies.bat"

REM Set counter.
SET /A COUNT=1

FOR /R "%mp4PATH%" %%G IN (*.mp4) DO (
    SET "fpath=%%~fG"
    SET "fname=%%~nG"
    SETLOCAL enabledelayedexpansion

    IF "!fname!"=="!fname:*(x265)=!" (
        CALL :DOFFmpegCLI "!fpath!"

REM Add line break space.
ECHO( >>"convert_movies.bat"

    ) ELSE ENDLOCAL
)
GOTO:EOF

:DOFFmpegCLI
REM Skip if the parameter is empty.
IF "%~1"=="" GOTO:EOF
    FOR %%A IN ("%~1") DO (
        SET "Folder=%%~dpA"
        SET "Name=%%~nxA"
    )

REM Run FFmpeg.exe in the cmd.exe window.
ECHO ffmpeg -ss 00:10:00 -t 1 -y -i "%~1" -c:v libx265 -preset slow -crf 18 -c:a aac "%Folder%%~n1(x265).mp4">>"convert_movies.bat" && ffmpeg | ffmpeg -ss 00:10:00 -t 1 -y -i "%~1" -c:v libx265 -preset slow -crf 18 -c:a aac "%Folder%%~n1(x265).mp4"
EXIT /B
PAUSE