4.1

Chapter 4 Advanced adjustments 35
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Field order: Use the pop-up menu to set the output scanning method (either the eld
dominance or a conversion to progressive scanning). There are four options:
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Same as Source: Maintains the same scanning method used by the source media le.
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Progressive: Scans complete frames (not frames divided into interlaced elds).
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Top First: Scans interlaced elds, giving dominance (eld order) to the top eld, also known
as eld two, the upper eld, or the odd eld.
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Bottom First: Scans interlaced elds, giving dominance (eld order) to the bottom eld, also
known as eld one, the lower eld, or the even eld.
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Scale image to preserve aspect ratio: Select this checkbox to scale the output les to use square
pixels and maintain the original aspect ratio (which results in an increase or decrease in the
number of horizontal and vertical pixels).
Cropping and padding
Customize the nal cropping, sizing, and aspect ratio using the Cropping & Padding properties.
Cropping removes video content from an image. Padding scales the image to a smaller size while
retaining the output image’s frame size. For more information about these properties, see Modify
frame size overview on page 69.
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Cropping: This pop-up menu sets the dimension of the output image. The custom option
allows you to enter your own image dimensions in the elds; other options use predetermined
sizes. The Letterbox Area of Source option detects image edges and automatically enters crop
values to match them. This is useful if you want to crop out the letterbox area (the black bars
above and below a widescreen image) of a source media le.
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Padding: This pop-up menu sets the scaling of the output image while retaining the output
image’s frame size. The custom option allows you to enter your own scaling dimensions in the
elds; other options use predetermined dimensions.
Quality
The following properties determine how the video will be resized, retimed, and otherwise
adjusted when transcoded.
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Resize lter: This pop-up menu sets the resizing method. There are three options:
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Fast (Nearest Pixel): Provides the fastest processing time.
•
Better (Linear Filter): Provides a medium trade-o between processing time and
output quality.
•
Best (Statistical Prediction): Provides the highest output quality, but takes longer.
•
Retiming Quality: This pop-up menu sets the retiming method. There are four options:
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Fast (Nearest Frame): Uses a copy of the nearest available frame to ll the new
in-between frames.
•
Better (Motion Adaptive): Uses deinterlacing on areas of the source le that contain
movement to produce good-quality output.
•
Best (Motion Compensated): Uses deinterlacing on areas of the source le that contain
movement to produce high-quality output.
•
Reverse Telecine: Removes the extra elds added during the telecine process to convert the
lm’s 24 fps to NTSC’s 29.97 fps. Choosing this item disables all the other Quality controls. For
more information, see About reverse telecine on page 74.
67% resize factor