4
Table Of Contents
- Compressor 4 User Manual
- Contents
- Welcome to Compressor
- Getting Started Quickly
- Ways to Use Compressor
- The Basic Transcoding Workflow
- The Compressor Interface
- Compressor Windows and the Transcoding Workflow
- Creating and Managing Compressor Layouts
- Working with the Compressor Windows
- Batch Window
- Settings Tab
- Destinations Tab
- Inspector Window
- History Window
- Preview Window
- Apple Qmaster Sharing Window
- Share Monitor
- Droplet Windows
- About Changing Values and Timecode Entries
- Keyboard Shortcuts
- Setting Compressor Preferences
- Importing Source Media Files
- Creating, Previewing, and Modifying Settings
- Finalizing Jobs and Submitting Batches
- Creating AIFF Files
- Creating Common Audio Format Files
- Creating DV Stream Output Files
- Creating Dolby Digital Professional Output Files
- About the Dolby Digital Professional Encoder Pane
- General Information About Creating Dolby Digital Professional Files
- Converting Stereo Audio Files to Dolby Digital Professional Format
- Assigning Files to Surround Sound Channels (Manual Method)
- Assigning Files to Surround Sound Channels (Automatic Methods)
- Assigning Files to Surround Sound Channels with Droplets
- Options for Spatial Mixing
- Creating H.264 for Apple Devices Output Files
- Creating H.264 for Blu-ray Disc
- Creating Image Sequence Files
- Creating MP3 Output Files
- Creating MPEG-1 Output Files
- Common Uses for MPEG-1
- MPEG-1 Specifications
- About the MPEG-1 Encoder Pane
- About the MPEG-1 Video Tab
- About the MPEG-1 Audio Tab
- About System and Elementary Streams
- MPEG-1 Transcoding Workflow
- Configuring the MPEG-1 File Format for Web Use
- Configuring the MPEG-1 File Format for DVD Use
- Creating the MPEG-1 Video for DVD Setting
- Creating the MPEG-1 Audio for DVD Setting
- Optional—Creating an MPEG-1 for DVD Group and Destination
- Creating MPEG-2 Output Files
- Creating MPEG-4 Output Files
- About MPEG-4 Part 2
- About the MPEG-4 Part 2 Encoder Pane
- Using Default MPEG-4 Part 2 Settings
- Customizing MPEG-4 Part 2 Settings
- Audio Podcasting Workflow
- Stage 1: Configuring the MPEG-4 Output for Audio-Only Output
- Stage 2: Including Podcasting Information
- Stage 3: Applying the Setting to a Source Media File’s Target
- Stage 4: Entering Annotations for the Output Media File
- Stage 5: Creating and Configuring Markers for the Output Media File
- Stage 6: Submitting the Job and Verifying the Output Media File
- Adding Additional Settings and Presets
- Creating QuickTime Export Component Files
- Creating QuickTime Movie Output Files
- Adding Filters to a Setting
- Working with Frame Controls
- Adding Geometry Settings
- Adding Actions
- Using the Preview Window
- Creating and Changing Destinations
- Using Droplets
- Apple Qmaster and Distributed Processing
- Distributed Processing Basics
- Basic Components of the Apple Qmaster Distributed Processing System
- Getting Started Quickly Using This Computer Plus
- Getting Started Quickly Using QuickClusters
- The Interfaces in the Apple Qmaster Distributed Processing System
- Apple Qmaster Sharing Window of Compressor
- General Information About Clusters
- Options in the Apple Qmaster Sharing Window of Compressor
- Managed vs. Unmanaged Services
- Turning Cluster Controller Services On or Off
- Using Virtual Clusters to Make the Most of Multicore Computers
- Setting a Service Password for Including a Computer in a Cluster
- Scheduling Service Availability
- Using Cluster Storage
- Defining Ports for Service Advertisements
- Recovery and Failure Notification Features
- Creating Clusters with Apple Qadministrator
- Setting Up for Part-Time Distributed Processing with Shake
- Appendix A: Keyboard Shortcuts
- Appendix B: Solving Problems
- Appendix C: Using the Command Line
The cropping settings are in the Source Inset (Cropping) section of the Geometry pane.
Scaling
Scaling provides a way to alter the output video file’s frame size without removing any
of the source image. Most often, scaling involves shrinking your output media image size
to save storage space or reduce the bit rate.
Compressor offers four basic methods for scaling the image size of an output media file.
• Choose a percentage of the source size: Three settings scale the source image based on
a percentage (100% of source, 50% of source, and 25% of source). In addition to the
source image frame size, crop values will affect the actual frame size of the output
video.
• Choose a maximum frame size: Six settings scale the source image to maintain the
original aspect ratio and to be as large as possible without going over the selected
frame size.
• Choose a specific frame size: There are several standard frame size settings you can
choose from, such as 720x486, 720x576, and so on. When you choose any of these, the
output video file’s frame size will match this setting.
• Enter a custom value: You can enter a custom frame size. Additionally, you can have
the custom frame size constrained to a common aspect ratio such as 4:3 or 16:9. When
you enter a custom frame size, the output video file’s frame size will match this setting.
You are also able to define the output image’s pixel aspect ratio by choosing from a
pop-up menu with the common settings.
Note: The scaling settings are only active when using the MPEG-4, QuickTime Movie, and
Image Sequence output encoding formats.
The scaling settings are in the “Dimensions (encoded pixels)” section of the Geometry
pane.
Padding
Padding provides a method to scale the image to a smaller size while retaining the output
image’s frame size by filling the padded areas with black. Unlike cropping, padding does
not remove any of the source image—the image is reduced by scaling by the padding
amounts.
Padding is useful when the source image frame size is smaller than the output image
frame size and you want to prevent the source image from being scaled to the output
image size. By adding the correct amount of padding, the source image will remain the
same size in the output image, with black filling the rest of the image frame.
Padding is automatically applied when the source video image is uncompressed NTSC
720 x 486 and the output image is 720 x 480.
280 Chapter 24 Adding Geometry Settings