smart resize, letterbox and AviSynth-script

[Wilbert]

I'm checking the avisynth-script of smart resize (see below) that I found somewhere on the internet. I encountered the following problem:

The borders (when letterboxing) can be given any color. For example: black 0x000000, red 0xff0000 or blue 0x0000ff.

We have for example:

VD_SmartResize(320,240,1,4,320,320,0,"0 1 1 4 320 240 100 0 0 0 0 4 4 2 2")

The color argument 0 gives black borders and 255 blue borders. But if you subsitute 0x000000 (black) or 0xff0000 (red) it results
in an error. Is there a simple way to obtain red borders ???


script:

#################################################################
# SmartResize by Donald Graft #
# #
# Values: #
# - letterbox [0,1] : 0 - without, 1 - with letterboxing #
# - mode [0, 1, 2 , 3, 4, 128, 129, 130, 131, 132] : #
# noninterlaced : 0 - nearest neighbor #
# 1 - bilinear #
# 2 - bicubic #
# 3 - precise bilinear #
# 4 - precise bicubic #
# interlaced : 128 - nearest neighbor #
# 129 - bilinear #
# 130 - bicubic #
# 131 - precise bilinear #
# 132 - precise bicubic #
# - color [0]: 0 - black by default (of bars when letterboxing) #
# - calculator : doesn't matter for now #
#################################################################

function VD_SmartResize(clip clip, int "new_width", int "new_height", int "letterbox", int "mode",
\ int "frame_width", int "frame_height", int "color", string "calculator")

{
LoadVirtualdubPlugin(VirtualDub_plugin_directory+"\Resize.vdf", "_VD_SmartResize")
return clip._VD_SmartResize(new_width, new_height, letterbox, mode, frame_width, frame_height, color, calculator)
}

[dividee]

Hexadecimal notation in avisynth is with a $
red will be $ff0000 (you could also use the decimal value: 16711680 ;) )

[Wilbert]

I figured it out already yesterday (after reading the docs), but thanks anyway. It's a shame that I didn't try the decimal value 16711680 = 15*16^5 + 15*16^4.

A related question which I couldn't find in the docs. Are if-then-else constructions possible ?

Something like "if (mode==1) {y=0} else {y=1}", or did I mess up the syntax?

[dividee]

No, there is no if/then/else per se, but there is the ternary operator ?: as in C:
y = mode==1?0:1

Be aware that the values of the variable has to be known when the script is initialized: you can use the clip width or height or it's number of frames in expressions, but not the current frame number.