@echo off

title low
cls
set path=
set /p path="URL: "
cls
echo lowering
ffmpeg -i %path% -c:a libopus -ac 1 -ar 8000 -b:a 6000 -vbr constrained -f opus - ^
| ffmpeg -i - -b:a 1k -y "%path% low"
echo.
echo done.
exit