NeeD info about VFBC ?

[adam_lo]

Hello,
I need info about the
1- How did the VFBC work ?(Please,If anyone have pdf or link about this subject, send it to me :arrow: adam_lo@ymail.com )
2- what is the benefit of the stride ? and what is mean ?
I have spartan 3a 3400 and in the demo that came with it there is a VFBC core .
and it mentioned in the VSK_top.h

// Size of input image
#define VID_IN_STRIDE 4096
#define VID_IN_WIDTH 720
#define VID_IN_HEIGHT 480

// Size of output image
#define VID_OUT_HEIGHT 480
#define VID_OUT_WIDTH 640
#define VID_OUT_STRIDE 2944 // 2560
what is the stride ?

Thanks in advance

 

[adam_lo]

Please, any help
I need info. about VFBC so much
I used spartan 3a 3400 and it came as IP core with it but I did n't understand how

 

[mrflibble]

Google on "image width stride" to get some hits roughly related to image stride.