Adobe Media Encoder - Manual (Page 60)

Scale To Fit
Scale To Fill
Stretch To Fill
Scale To Fit With Black Borders
Change Output Size To Match Source
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Scaling source frames
Use the options in the Source Scaling menu of the Export Settings dialog for better scaling of source frames within output frames of a different
size.
In Adobe Media Encoder CS6 and later, it is not necessary that you enable a crop before using this option. Also, this setting is available for any
output format with editable frame dimensions.
Source Scaling options
Scales the source frame to fit within the output frame while maintaining pixel aspect ratio of the source. Source frames are letter-
boxed or pillar-boxed within the output frame as necessary.
If you have cropped the video, the dimensions of the cropped video are adjusted to fit within the Frame Width and Frame Height specified in the
Video tab. If the aspect ratio defined by those values do not match that of the cropped video, then you will necessarily have black bars on
encoded footage.
Scales the source frame to completely fill the output frame while cropping the source frame as necessary. Pixel aspect ratio of the
source frame is maintained.
Resizes the source frame to completely fill the output frame. Pixel aspect ratio of the source is not maintained, hence distortions
may occur if the output frame does not have the same aspect as the source.
Source frame, including the cropped area, is fit within the output frame. Pixel aspect ratio is maintained. A
black border is applied to the video, even if the target dimension is smaller than the source video.
Automatically sets the height and width of the output to the height and width of the cropped frame,
overriding the output frame size settings.
Select this setting if you want to export content for use with Flash Player or other web applications without black borders such as those used with
letterboxing or pillarboxing.
Effects settings
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