ok.. this is what i got so far.. i will keep updating this.
in the other thread about it.. all it says for mac users is to give ipsp a shot.. i dont know about all other mac users... but i would like a little more help than that.
You have an .AVI DivX, a VOB file, or a movie in some other format, and you want to encode it for playback on the Sony PSP. The Sony PSP uses MP4 video with a non-standard header and very specific encoding parameters. ffmpegX has a special preset to encode video in such format.
Open ffmpegX and drop your movie file to ffmpegX icon or "Open" field or "From" area to open it, or click the Open.. button to locate the file from your hard disk.
The "Save as..." name will be set by ffmpegX. At encoding time, the special file naming format needed by the PSP will be defined by ffmpegX.
Click the Target Format pulldown menu in the Summary tab and choose "PSP". The preset use XviD video and AAC audio in a MP4 container.
Don't change the preset framerate value.
You may increase video bitrate up to 450kbps and audio bitrate up to 128kbps if you want to improve quality a little, though preset values are already extremely good.
You may go in the Filters tab to add cropping and/or padding if needed.
Subtitles are not supported (unless you create a file beforehand with subtitles burned in the image, and then encode such file). In the Options tab, set the "PSP name" field with the name you want to use in the PSP to catalog your movie. You should note that ffmpegX can not open back PSP movie file to convert them again.
Click the "Encode" button.
Encoding takes places in ffmpegX Progress window.
You can continue working with other applications while encoding. OSX Unix core reallocates processor ressources in realtime as needed.
Locate the encoded file by clicking the icon.
Connect the PSP to your Mac using the USB connection, and choose the ?USB connection? option on the PSP menu.
When the drive appears on your OSX desktop, create the following directories in the ROOT of the drive (i.e. NOT in the PSP directory):
MP_ROOT/100MNV01
Now copy the MP4 file created by ffmpegX to the MP_ROOT/100MNV01 directory. Dismount the PSP memory stick drive.
Go to the Movies menu on the PSP. You should now see the movie and be able to play it. Pressing the triangle button gives access to menu options. Among these you will find one for screen size. This allows letterboxed movies to use the whole screen. Scroll through the options using the circle button. When you?re happy with the format, press the triangle button again.
i know there is handbrake out there... but it doesnt give you the greatest quality...