Whenever capturing material, you must select a raster.
To select a raster for capture:
In the Video Device SDI group, toggle the Video/Graphics option box to display your video card (AVIO). See Capture Menu Options.
Select an option from the Link Type box. Select Single for a 4:2:2 video signal, and Dual for a 4:4:4 video signal.
Toggle the Format option box to the required raster format (SD, HD, Film, or Audio).
In the Raster list, select the raster that matches the material to capture.
(Optional) Remove 3:2 pulldown frames on capture. See Removing Pulldown when Capturing.