went

bat

@echo off
setlocal enabledelayedexpansion
set /a "max=20,count=max,folderNum=0"
for %%i in (*.mp4) do (
	if "!count!"=="%max%" (
		set "count=0"
		set /a "folderNum+=1"
		set "folderName=0000!folderNum!"
		mkdir "m!folderName:~-3!"
	)
	set /a count+=1
	move /y "%%i" "m!folderName:~-3!" >nul
)
pause&exit
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