77七

@echo off
rem 批处理保存为utf-8编码格式
chcp 65001 >nul
set t1=00:00:00,000
(for /f "tokens=1* delims=[]" %%i in ('find /n /v "" ^<"%~1"') do (
	if "%%j" neq "" (
		for /f "tokens=1-3" %%x in ("%%j") do (
			if "%%y" equ "-->" (
				setlocal enabledelayedexpansion
				for /f "tokens=1-4 delims=:," %%a in ("%%z") do (
					set /a "t2ms=((1%%a%%100*60+1%%b%%100)*60+1%%c%%100)*1000+1%%d%%1000,p=t2ms%%100%%20"
					if !p! leq 10 (
						set /a t2ms-=p
					) else (
						set /a t2ms+=20-p
					)
				)
				set /a "h=t2ms/1000/60/60+100,m=t2ms/1000/60%%60+100,s=t2ms/1000%%60+100,ms=t2ms%%1000+1000"
				set t2=!h:~1!:!m:~1!:!s:~1!,!ms:~1!
				echo !t1! --^> !t2!
				for /f "delims=" %%t in ("!t2!") do (
					endlocal
					set t1=%%t
				)
			) else (
				echo=%%j
			)
		)
	) else (
		echo=
	)
))>$
move $ "%~1"
pauseCOPY