watch movie on your PSP

I bought it several months ago. Mainly for my kids to play the games on it. But, last night they ask me if they can watch a cartoon on it. I googled and found a tons of tutorials about how to convert movie to psp format which is MP4. So far so good. I converted the Rio DvdRip to MP4. I connected the PSP with my laptop hoping that i will just copy the converted cartoon to the stick and it will work. But i was wrong. I put it to the root of the memory stick but it didn’t work at all. The PSP was not able to find the movie. Then i googled again and found a lots of tutorials about how to put movie on your PSP. They all suggested the same which is creating a two folders MP_ROOT and 100MNV01 inside it. Some of them even suggested that i name the files M4V10001.MP4, M4V10001.MP4 etc. respectively.  None of these worked for me. Rather i tested something pretty silly as it seemed from beginning. Meaning, i created a brand new folder named VIDEO in the root of the memory stick and i put the converted file as is Rio 2011.mp4. Final result X:\VIDEO\Rio 2011.mp4 !!! Voila!

It worked like a charm. My kids were very happy because of that. Hopefully someone else will find this useful too.