An 8051 cannot handle the real time data rates generated by todays webcam
resolution and color depth. Period. If you drop the frame rate and resolution
you might be able to manage a data stream from camera.
The alternative is use a video controller chip with webcam, and use 8051 to
do housekeeping chores. But again an 8051 will not mange live 30 fps video
data rates. Beyond its capability. There are processors that can, Freescale,
those chips have the additional HW onchip to handle the data rates. Dedicated
DMA often a required feature.
Epson display controllers freaturing reduction of load of the main CPU, low power consumption, improvement of drawing performance, and supporting for various types of LCD panles.
What are you trying to do with the video ?
Regards, Dana.