don't forget that:
- you'll need a version a quicktime intalled (not quicktime alternative)
- pspvideo9 encodes the video directly into the 16/9 format of the psp, not 3gp (usefull for 4/3 video files)
- 3gpconverter is faster than pspvideo9
- 768kbit/s is way enough for many videos, if you want to save some space
- both applications rename the files correctly so that the psp recognizes them. but the original name of the video will appear on the psp