Using
            the GMask node in Batch or the Modular Keyer, you can render garbage
            masks in Interlaced mode to accommodate video material. 
         
         To render garbage masks in Interlaced mode:
         
         
            - Do one of the following:
               
                  - From the GMask node's menu, select Interlaced
                     from the Rendering box.
                  
 
               
               
                  - From the Keyer's Setup menu, select Interlaced
                     from the Rendering box. This setting affects both the Keyer and
                     any garbage masks you create. For more information, see 
                              Field and Frame Rendering.