Apple Compressor (4.0) User Manual
Page 68
Chapter 5
Custom settings and output formats
68
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iPhone (Local/WiFi): This option creates video output files with a frame width of 854 pixels.
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iPhone (Cellular): This option creates video output files with a frame width of 176 pixels.
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iPad/iPhone with Retina display: This option creates video output files with a frame width of
1280 pixels.
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Aspect Ratio: Use this pop-up menu to choose the exact pixel dimensions of the output media
file. The available options depend on which device option you chose. For more information,
see
iTunes and Apple device output overview
on page 65.
The Aspect Ratio setting also has an Automatic button. Clicking the Automatic button causes
the encoder to choose the aspect ratio that matches the source video file.
Important:
When the Aspect Ratio setting is in automatic mode, Compressor can choose from
a wider variety of values to better match the source video (with the values determined and
displayed when this output format is applied to a source media file). For the best results, it’s
recommended that you use the automatic mode for the Aspect Ratio setting.
Aspect Ratio
Automatic button
Note: By default, the Frame Controls feature is set to Automatic. The Frame Controls retiming
controls are engaged only if the source file is interlaced. For more information, see
on page 166.
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Frame Rate: Use this pop-up menu to choose from the options listed below.
The Frame Rate setting also has an Automatic button. Clicking the Automatic button causes
the encoder to choose the frame rate that matches the source video file.
Frame Rate
Automatic button
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29.97: Used for NTSC-based video
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25: Used for PAL-based video
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24: Used for standard video
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23.98: Used for NTSC-based video
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15: Used for web-based video