[theReal]

I'm not sure if a preroll of 2 is good - it works just as well without this parameter, but I thought 2 can't hurt...

I only used the example of delogo to show how you can load (most) VDub filters in avisynth. It is, as neuron2 said, made to remove logos (which it does quite well).

The commandline:
(1, "", "", "", "", "G:/ProSieben.bmp", 10, 140, 0, 0)

is copied and pasted directly from a VDub .vcf file: I configured the filter in VDub, then I saved the processing settings ("File"->"Save processing settings") to a .vcf file. I opened this file with a text editor and looked for the commandline for the delogo filter. I just copied everything between the brackets right into the avisynth script, ready!

btw. in LoadVirtualDubPlugin("H:\avisynth2\delogo.vdf", "delogo", 2) the second parameter "delogo" is the name with which you can call the filter later on in the avisynth script. So if you write "xyz" instead, you have to call the filter like this:

xyz(*parameters*)