Under the default settings, the selection of a profile for converting the DVD video title to the MPEG-4 format defines the size of the picture to be created. You can adjust these picture sizes individually under the Resize tab.
The following setting options are available in the Resize area:
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Option button
Automatic (recommended)
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Automatically adjusts the frame size to the selected Nero Digital profile so that the frame size generated matches the output medium.
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Option button
Custom Resize
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Activates the two text boxes for the page format (width and height).
The values to be entered must be multiples of 16 and must be in the range 16 to 720 pixels for width and 16 to 576 pixels for height.
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Option button
Disable
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Allows the video to be converted without changing the frame size.
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Check box
Square Pixels / Letterboxing
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If this check box is selected, a Nero Digital file that consists of square pixels and uses the Letterbox method is created. This increases compatibility with some players. This can, however, result in black bars inside the video file.
This option is only available if the Custom resize option button has been selected.
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Drop-down menu
Resizing method
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Selects the desired resizing method, e.g. bilinear, bicubic, Lanczos and superresolution.
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See also
| MPEG-4 |
The Moving Picture Experts Group defined this industry standard for video and audio codecs. MPEG-4 is the latest MPEG standard for video and audio. MPEG-4 combines several functions from MPEG-1, MPEG-2 and other standards. Nero Digital™ Video and Nero Digital™ Audio are based on this standard.
| Bicubic interpolation |
Bicubic interpolation is an image processing method. If an image is enlarged beyond its original size, not only are the four neighboring pixels analyzed to calculate the new resulting pixel, but other nearby pixels are analyzed as well. This way, the new pixel is interpolated based on eight neighboring pixels.
| Bilinear Interpolation |
Bilinear interpolation refers to an image processing method. If a picture is enlarged beyond its original size, the resulting new image pixels are calculated based on the average between the four neighboring pixels. The more a picture is enlarged with this method, the less sharp it becomes.
| Lanczos interpolation |
Lanczos interpolation refers to an image enlargement method. The method was developed according to an algorithm created by Cornelius Lanczos. This interpolation method provides high quality and good sharpness levels. However, the actual visual resolution of the images is not increased.
| Letterbox |
Letterbox refers to an aspect ratio transferring method with which, e.g. a video file with 16:9 aspect ratio is adjusted for the 4:3 television aspect ratio. Black bars are placed above and below the picture.