Re-Encoding 720p H.264 MKVs to 400p XviD AVIs?

[Kid Ryan]

I have already tried using XviD4PSP 5.37, but it takes me 1 hour and 40 minutes to do a 2-pass.

Here are my computer's specs for reference.

System Information

Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3

Processor: Intel® Pentium® 4 CPU 2.20GHz

DirectX Version: DirectX 9.0c (4.09.0000.0904)

Physical RAM: 254MB

Virtual Memory: 2047MB