1)   AVI/WMV PSP Converter 1.5
WinXMedia AVI/WMV PSP Converter is a powerful and easy-to-use PSP MP4 video converter. With it, you can convert AVI(DivX, XviD, MPEG-4, YUV...), MPEG1 MPEG2 WMV ASF video to PSP MP4 video files and play them in your Sony PSP.

 2)   iWellsoft Video to PSP Converter 4.3.1612
iWellsoft Video to PSP Converter is a powerful PSP converter which can convert almost all popular video formats to PSP/AAC/M4A/MP3 clips and play them in PSP or other software PSP player.