Unfortunately I didn't have any luck wringing meaning out of their image identification strings...
I also found out rather late in the game that they use an interesting cookie based scheme for defeating people trying to link to their images from external sites...
IMDB's format for resizing images: [server hostname]/images/M/[image identifier]._V1._SX[width]_SY[HEIGHT]_.[format]
eg: http://ia.media-imdb.com/images/M/MV5BNzEwNzQ1NjczM15BMl5Ban...
Unfortunately I didn't have any luck wringing meaning out of their image identification strings...
I also found out rather late in the game that they use an interesting cookie based scheme for defeating people trying to link to their images from external sites...