DE1 and SDram

Hi everybody!.

I have a project.

I need capture the VGA signal (RGB 8 color) with resolution is 640x480 and convert it to Vga signal (RGB 8 color) with resolution is 800x600.

I have used MCU STM32f429 and try to do that but MCU seem slow then it can not work well.

I trying to change to FPGA to do that, i'm learning Verilog and i can write some easy code. I need use SDram to buffer for input signal data and scale it from resolution 640x480 to 800x600.

I try to understand about Qsys, Nios but My knowledge about FPGA is not much. I think, it needn't use Qsys and Nios. I had tryed to search example verilog code on internet about DE1 and SDsam but i couldn't found anything. Somebody help me.?.