Apple Compressor 3 - Manual (Page 274)

• Set Duration to: Use this to choose one of three methods to convert the clip’s duration
to a new duration.
Selection pop-up menu
• Percent of source: Use this to enter a percentage value to modify the clip’s speed or
choose a specific situation from the pop-up menu. For more information about the
options in this radio button, see
Entering a Percentage .
• Total duration: Use this to choose a duration for the clip. For more information about
the options in this radio button, see Entering a Duration .
• So source frames play at [frame rate] fps: Use this when the source media file’s frame
rate does not match the Encoder pane frame rate (shown as the frame rate for this
item). For more information about the options in this radio button, see
Forcing Frames
to Play at the Encoder Pane’s Frame Rate Setting .
Adding Frame Controls to a Setting
You use the Frame Controls pane in the Inspector window to add frame resizing and
retiming adjustments to your settings.
To add automatic Frame Controls adjustments to a setting
1 Open the Settings tab.
2 Select the setting in the Settings tab that you want to modify. (Or select a setting already
applied to a source media file in the Batch window.)
3 Click the Frame Controls tab in the Inspector window.
4 Click the Automatic button next to the Frame Controls pop-up menu.
Compressor analyzes the transcoding job (the source media file and the applied setting)
and then automatically determines the appropriate Frame Controls attributes.
In Automatic mode, Frame Controls technology is engaged in the following two types
of transcodes only:
• Transcoding from high definition (HD) sources to standard definition (SD) MPEG-2
output files
• Transcoding from interlaced sources to H.264 for DVD Studio Pro and H.264 for Apple
Devices (progressive) output files
To add custom Frame Controls adjustments to a setting
1 Open the Settings tab.
274 Chapter 23 Working with Frame Controls