How about the software of Avex DVD to PSP Video Suite?
Avex DVD to PSP Video Suite
is an All-in-One & One-Click solution to create PSP movies. It converts DVDs, TV shows and home videos directly to PSP. The software combines DVD to PSP Converter and PSP Video Converter in one package at great discount.
1.Convert DVD, MPEG, Tivo, WMV, AVI, DivX/Xvid, RM, MOV videos, etc to PSP video.
2.Built-in X!-Speed™ transcode technology. Up to 3x faster than conventional converter.
3.Fully optimized for Dual-Core, HyperThread Processors, SSE2/SSE/MMX/3DNow!
4.Support H.264(High quality) and MPEG4 in MP4 format used in Sony PSP
5.Adjustable video size: 320x240, 368x208 and even undocumented 400x192 (extra-widescreen secrete resolution).
6.Optimized settings for superb video playback on PSP devices.
7.Included PSP video manager. Easy to build your to-be-watched list and click to transfer.
8.Support conversion in batch mode.
Detail information at Avex DVD to PSP Video Suite