avisynth - How to write avisynth script for rgba overlay

[moelover]

I use these code

LoadPlugin("F:\Program\megui\tools\avisynth_plugin\VSFilter.dll")

raw = DirectShowSource("F:\raw.mkv", fps=23.976, 
audio=false, convertfps=true)
logorgb = aviSource("F:\Logo RGB.avi")
logoalpha = aviSource("F:\Logo Alpha.avi")

raw

clip1 = raw.trim(0,2231)+trim(2232,2252).overlay(logorgb,0,0,logoalpha)+trim(2253,88000)

fin=clip1

return(fin)

but this code is problem when my logo fading



now I have 2 file Raw File (mkv file) and RGBA File (avi file).
and i want to slove problem from my old code
what should i do.
please show reference or example code
my eng is very bad sorry for these

Thank for help.

[jagabo]

We probably need to see your logo and alpha videos.

Here's an example script using a single image (cropped from your sample image):

Logo.png:

function RgbFade(clip vid, float fade)
{
    RgbAdjust(vid, r=fade, g=fade, b=fade)
}

logo = ImageSource("logo.png") 
alpha = ImageSource("logo.png").Invert().Animate(0,100, "RgbFade", 0.0, 1.0)
ColorBars()
Overlay(logo, 0, 0, alpha)
Trim(0,100)

Add "Return(alpha)" just after creating alpha to see what the alpha video should look like.

[poisondeathray]

deja vu
http://forum.doom9.org/showthread.php?t=170058

[moelover]

sorry for confuse. but i dont understand old topic
i will explain my problem by image.



This is my code

LoadPlugin("F:\Subtitles\Program\megui\tools\avisynth_plugin\VSFilter.dll")

raw = DirectShowSource("F:\Subtitles\Work\Subtitles\Hoshizora e Kakaru Hashi BD\ Hoshizora e Kakaru Hashi - OP.mkv", fps=23.976, audio=false, convertfps=true)
oprgb   = DirectShowSource("F:\Subtitles\Work\Subtitles\Hoshizora e Kakaru Hashi BD\OP RGB.avi").ConvertToRGB32()
opalpha = DirectShowSource("F:\Subtitles\Work\Subtitles\Hoshizora e Kakaru Hashi BD\OP ALPHA.avi").ConvertToRGB32()

raw

clip1 = raw.trim(0,4)+trim(5,272).overlay(oprgb,0,0,opalpha)+trim(272,88000)

fin=clip1

return(fin)

what should i do .