Encoding black and white material

[ux-3]

I am trying to encode a movie from the 60ties, which is in b/w, but not interlaced. Since it is b/w, I somehow hoped that there is a switch, which would only allow greyscale encoding. Well, I searched CCEs manual without success.

Searching the board yielded a few articles regarding greyscale filters, ususally in divx threads. These are said to eliminate color shades in the b/w, which I noticed in test encodes too. The articles were old, the links were dead.

Can anyone point me at a page or manual which explains how I can improve my b/w encoding using DVD2SVCD? This would probably be done by adding some filter, right?

The results from pure DVD2SVCD are quite acceptable, but
a) there is always room for improvement
b) I like to learn how it should be done
c) wouldn't hurt to get rid of the purple shades...

I don't expect anyone to write a guide for me, but a working link or added filter line whould be nice.

[ux-3]

Would it be better to post this in the advanced forum?

[manono]

Hi ux-3

Adding a greyscale filter to your .avs is a good idea for B&W movies. The easiest way to do it is to add the Tweak.dll (the AviSynth version of the Hue, Saturate, Intensity filter for VDub) into your collection. Then do the Load Plugin thing. and in your .avs also add the line:

Tweak(Sat=0)

From the Tweak Help File:

Values below 1.0 reduce the saturation. Use sat=0 to convert to grayscale.

[ux-3]

It took me a while to find that filter. In the end, it was obvious, but a search didn't lead me there directly.
Here is the link to Donald Grafts page:
http://sauron.mordor.net/dgraft/mine.html

I have tweak.dll downloaded and will give it a try.