Whats the normal time to encode from avi to mpeg?

[tavuslokus]

My P4 1.4Ghz 128RAM is taking the same tyime the .avi files lasts to encode it to mpeg. Is that the expectedon TMPGEnc B12j?? Here's an example:
Lets say I've got a .avi that is 352 x 288, 24 bits, 62328 imágenes, 20,000 imágenes/seg, 55 KB/s., KS-MPEG4 V3, it's size is 168MB and lasts about 50 minutes.
This is the same is takes to convert the file to Video-CD NTSCFilm (MPEG-1 352x240 23.976fps CBR 1150kbps, Layer-2 44100Hz 224k. The resulting file is 518MB. Am I selecting the right encoding settings??
Another thing I'm thinking is that I'd have to make 2 CDs for each movie or is there a way to compress it onto a single 74 or 80 min CD-R?

[adam]

One post is enough.