When cropping a landscape clip down to square allow the user to choose for each sequence which part is retained. This could be accomplished by allowing the user to scroll left or right on the preview of a square sequence to determine if the left, center, or right portion of the original landscape clip is retained. Ideally it would be fully variable and independent for each sequence (not applicable to the entire production). Maybe on scene one I like what was captured on the left side of the clip and for scene two I want to go with what was in the center.