AVISynth Filter command to resize and add letterboxing?

[Bel]

Don't know if anyone has been following this thread:
http://www.vcdhelp.com/forum/viewtopic.php?t=112328

But, I was wondering what the AVISynth command would be to resize video to 720x480 but add letterboxing so the video would only cover say 720x360. I've figured out how to do it with Virtualdub, just wondering the syntax to do it with AVISynth. Thanks.

[vhelp]

Morning Bel.

I'm no expert at AVIsynth, but I'll take a stab at it. I just quickly did some
calculation, and here's how I arrived at my figures below.

* 480 - 360 = 120
* now, take the 120 and device by 2, you get 60, so...
* assuming you haven't added any boarders, and that your clip HAS NO
boarders, then using:

LetterBox(60,60)

...wouldn't hurt to try. Just make sure their's no boarders already, ie, don't
create any in vdub.

Let us know if this worked.
-vhelp

[Truman]

The Letterbox filter simply blackens out parts of the frame. If you want to add borders, use the AddBorders filter.

If you want to resize to 720*360 (hope you have calculated correctly), the script looks like this:
Avisource()
BilinearResize(720,360)#or bicubic or simple resize
AddBorders(0,60,0,60)# or (0,56,0,64) as you like

http://www.vcdhelp.com/forum/viewtopic.php?t=99389

[Bel]

Gotcha, Thanks guys