Explaining about TMPGenc

[Toolman]

HI...

Ive read the guide about TMPGenc, but i didn't find out what these following options really do...

I'm encoding a Divx movie into a VCD



What do these following options REALLY do(these are the options i select when i encode):

Advanced --> source aspect ratio --> 4:3 625 line PAL
--> Sharpen edges
Quantize matrix --> mpeg standaard
--> soften block noise (50 * 50)
Audio --> 224 kb


thank you 4 your assistence along my Impossible journey