nvenc_compress.cmd

@echo off
@setlocal enableextensions enabledelayedexpansion
set exclude=_COMPRESSED_

for /f "tokens=*" %%a in ('dir . /b') do (
    set fname=%%~na
    set ext=%%~xa
    if !ext!==.mp4 (
        echo !fname!!ext!
        echo.!fname! | findstr /C:"!exclude!">nul && (
            echo skip: !fname!
        ) || (
            echo compressing...
            ffmpeg -i "!fname!!ext!" -c:v hevc_nvenc "%exclude%!fname!!ext!" -hide_banner -n
            rem ffmpeg -i "!fname!!ext!" -c:v av1_nvenc -preset p7 -tune hq -pix_fmt yuv420p -g 60 -b:v 8M "%exclude%!fname!!ext!" -hide_banner -n
        )
        echo.
    )
)

echo.DONE
endlocal
pause