4.1

Chapter 4 Advanced adjustments 30
Quality
The following properties provide instructions for image analysis, including frame resizing, clip
retiming, and deinterlacing.
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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.
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Better (Linear Filter): Provides a medium trade-o between processing time and
output quality.
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Best (Statistical Prediction): Provides the highest output quality, but takes longer.
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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.
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Better (Motion Adaptive): Uses deinterlacing on areas of the source le that contain
movement to produce good-quality output.
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Best (Motion Compensated): Uses deinterlacing on areas of the source le that contain
movement to produce high-quality output.
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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.
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Adaptive details: Select this checkbox to use advanced image analysis to distinguish between
noise and edge areas during output.
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Anti-aliasing level: Sets the softness level in the output image. Double-click the value and
then manually enter a new value or drag the slider to the right to increase softness. This
property improves the quality of conversions when you’re scaling media up. For example,
when transcoding SD video to HD, anti-aliasing smooths jagged edges that might appear in
the image.
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Details level: Sets the amount of detail in the output image. Double-click the value and then
manually enter a new value or drag the slider to set the value. This sharpening control lets you
add detail back to an image being enlarged. Unlike other sharpening operations, the “Details
level” property distinguishes between noise and feature details, and generally doesn’t increase
unwanted grain. Increasing this value may introduce jagged edges, however, which can be
eliminated by increasing the “Anti-aliasing level” slider.
Video eects
For a list of available video eects and instructions on how to add a video eect to a setting, see
Add and remove eects on page 76.
Audio properties
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Channel layout: Use the pop-up menu to set the audio channel layout.
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Sample rate: Use this pop-up menu to set the number of times per second that music
waveforms (samples) are captured digitally. The higher the sample rate, the higher the audio
quality and the larger the le size.
•
Bit rate: Use the pop-up menu to set the bit rate to use for the output audio.
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Include Dolby 5.1 Audio Track: Select the checkbox to add surround sound as a Dolby Digital
audio track for playback on Apple TV.
Audio eects
For a list of available audio eects and instructions on how to add an audio eect to a setting,
see Add and remove eects on page 76.
67% resize factor