scaler usage in run time control

In my project i want to develop video system which can support upto 1920x1080 resolution and I am not using sopc builder.

I want to use the deinterlacer function with 10bit input of 3 colour planed in parallel.I am using ddr2sdram for frame buffering.

1.can u help me regarding the datawidth of ddr2sdram required.Avalon interface usage.

2.I want to use ddr2 high performance memory controller.so how can i interface my 30bit din_data to the ddr2 controller in input

3.can u help me in selecting the avalon master parameters in megawizard for efficient implementation .

4.It would be great help if u had any detailed deinterlacer function application interfacing document

regards

Ysc