Use the Source Pre-Processing settings to determine whether resize is performed on full progressive frames, or on either (or both) of the interlaced fields.
(a) Source Fields Toggle button
Use Both Field buttonEnable to use both fields of an interlaced clip to process the resizing. Disabled when Field Merge or Deinterlace are enabled.
Field Merge buttonEnable to merge the two fields of an interlaced clip to process the resizing. Disabled when Use Both Field or Deinterlace are enabled.
Deinterlace buttonEnable to select one of the two fields in an interlaced clip to process the resizing. Disabled when Use Both Field or Field Merge are enabled.
Source Fields Toggle buttonSelect Field 1 or Field 2 when processing the resizing on only one field of an interlaced clip. Active when Deinterlace is enabled.