Before you can watch movies on your PSP, you need to understand the directory structure, file types, and naming agreements. PSP does not play normal formats like WMV or Quick MOV files. It uses MPEG-4 codecs, and its own file naming to complicate things a bit. Once you understand this basics, you are well on your way to download any movie, music, games, and more you want on your PSP.
Once the PSP was launched, it would only accept one movie format – MPEG-4 SP standard. With subsequent updates although a better AVC format (also known as H.264 or MPEG-4 Part 10) can also be played on PSP.
MPEG-4 AAC files.
This is the default format originally used for PSP. It is commonly known as MPEG-4 Simple format, or as MPEG-4 Part 2, and MPEG-4 AAC.
MPEG-4 AAC movies should be placed in the MP_ROOT100MNV01 folder and must be named with a M4V prefix followed by random, like this; M4V00001, M4V00002, M4V00003 etc., with .MP4 extension.
When you browse a list of movies on your PSP, this type of file will be MPG4.
MPEG-4 AVC (Advanced Video Coding) Files.
This format is played on PSP after installing 2.0 or later hardware upgrade. AVC files are also known as MPEG-4 Part 10, or more often H.264.
AVC files are superior to simple vanilla MPEG-4 files and are really variants of the exact same format used for super UMD video disk movies.
MPEG-4 AVC movies should be placed in the MP_ROOT100ANV01 folder and must be marked with MAQ prefix and follow 5-digit random numbers like this, MAQ00001, MAQ00002, MAQ00003 etc., with .MP4 extension.
When you browse a list of movies on your PSP, this type of file will be AVC tagged.
Using lowercase means that PSP will not recognize the file at all. Always remember which folder to install the filmmaking and what the naming agreement is to use, so you must name all files only with CAPS.