How i can make an timer (countup/countdown)?

[RGMOfficial]

I've been thinking how i can do an countdown in AviSynth?
So, i need some help because i want to know how i can make an custom counter that...


Be either countup or countdown
Support for both non-drop and drop frame rates
And be a custom counter (as ShowSMPTE it's not very customizable)

[Reel.Deel]

Maybe this will help you: Timer (kinda like ShowTime()) (https://forum.doom9.org/showthread.php?t=168241)

[RGMOfficial]

Maybe this will help you: Timer (kinda like ShowTime()) (https://forum.doom9.org/showthread.php?t=168241)

Oh, thanks. ;)