HOW to encode XGA (1024x768, 10bit grayscale data) in DM368

I want to capture XGA(1024x768,10bit @30fps) by DM368. This steam is generated by a FPGA which will give a 10-bit thermal camera output (only grayscale-no colour info) at XGA resolution. This data i want encode using DM368. Which is the better approach? Should i give it as a RAW input & provide pixel clock,hsync & vsync OR how do i generate BT.656 stream to directly map to DM368. Please help.