You could have downloaded Digiters DVD to PSP Converter 3.6 from our software library for free. The most popular version among the software users is 3.6. The common filename for the program's installer is dvd2psp.exe. This program was originally created by Digiters Software Co., Ltd. The software lies within Multimedia Tools, more precisely Editors & Converters.
From the developer:
Digiters DVD to PSP Converter is an easy DVD PSP ripper application that enables you to convert DVDs to PSP video format. The program allows you to convert DVD to PSP by custom file size, rip DVD's any segment to PSP MP4 video, select target subtitle and audio track, and so on.
You may want to check out more software, such as Ideal DVD to PSP Converter, ImTOO DVD to PSP Converter or Sothink DVD to PSP Converter, which might be similar to Digiters DVD to PSP Converter.