Create a function in Avisynth to apply a logo on a clip

[kaskaï]

Hello guys,
I want to create a function in Avisynth to call a dynamic logo/watermark.

Here is the useful part of my script (where vid is the initial clip on which we will apply the function) :

logo=CoronaSequence("D:\vid\Vdublogo\anim\i*.bmp").ColorKeyMask($4d4d4d,$000000).fadeio(10)
fixe=Imagesource("D:\vid\Vdublogo\anim\image0000.bmp",end=[<"gap", 200, 1880, 1165>]).convertfps(25).ConvertToRGB32()
logo=logo+fixe
logo=ColorKeyMask(logo,$4d4d4d,$000000)
logo=loop(logo)
ovl=Layer(vid,logo,"add",131,Width()-270,0)
return ovl

I have no idea if it's a basic or complex request.

Thank you very much for your help.

[kaskaï]

function mylogo(clip, int "gap"){
    gap = default(gap, 60) # valeur par défaut
    
    clip = (IsRGB32 (clip)==false) ? converttorgb32(clip) : last 
    helmet=CoronaSequence("D:\vid\Vdublogo\anim\i*.bmp").ColorKeyMask($4d4d4d,$000000).fadeio(10)
    BG=Imagesource("D:\vid\Vdublogo\anim\image0000.bmp",end=gap*25-26,fps=25).ConvertToRGB32()
    logo=ColorKeyMask(helmet+BG,$4d4d4d,$000000).loop()
    ovl=Layer(clip,logo,"add",131,Width(clip)-270,0)
    return ovl
}

Et Voilà