It's because iPhones and PSP's are not compatible.(they both use a different video format) You need to convert the video to a format the PSP can read..free video conversion software is available online
Do you mean "psp"? How to download a video to a psp? If you are trying to download videos from let say youtube and saving to your psp. Then I recommend you use Ant Video Downloader in getting videos off your browser. The videos downloaded by the tool works with any video converter allowing you to put them and view them in your psp.
Look on youtube.com
To put videos from YouTube to my PSP, I think you can first download YouTube video. A free video download is easily to found. Also you should convert video to mp4 format. I should recommend you Video Download Studio. It can help you do that. See http://www.downloadvideos-convert.com/
You can put television shows on your PSP but you can't watch actual television on it. There is a free program you can download called PSP Video 9 that is used to covert video viles into a format that is compatable with the PSP allowing you to watch television shows,movies, etc.
I'd like recommend you Video Download Studio, this tool just can download YouTube Video to your computer, if you want to import them to psp, you should change the format to mp4 format. http://www.downloadvideos-convert.com/
all psp support video player
Your video has to be MP4 format. You have to connect PSP and computer then you drag and drop the video file in the PSP VIDEO folder.
mp4 or PSP Video format
it allows you to download videos imbedded in web pages such as google video. hint: look up on wiki answers HOW TO PUT VIDEOS ON A PSP.
You need to put both in windows movie maker in the order that you want them in.
No, the video you may have seen of it running on a PSP is just a video being played on a PSP.