That’s right.  One of the world’s best portable video game  systems has already undermined its proprietary format and cut  all further production of UMD movies.  Sony’s medium of choice  for the PSP is now Sony’s somewhat other failed format: The  Memory Stick.  Don’t worry, it gets worse.  According to  EHomeUpgrade, Sony’s PSP can handle 480×272 - what you’d expect  all your movies in, right?  Guess again.  Sony’s Memory Stick  movies will be scaled down to 320×240 - probably done to reduce  size and accomplish the necessary “squeeze”.  What does this  mean for Sony PSP games?  Who knows, but we gotta question Blu  Ray, and oh ya, there is that damn Mini Disc format that never  quite took off, but just won’t disappear.