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
For example, “3/2 (L, C, R, Ls, Rs)” means three front channels (left, center, right), and
two rear channels (surround). “2/0 (L, R)” is essentially a standard stereo file. The audio
coding mode affects settings such as the available bandwidth and surround channel
preprocessing. If you click the Automatic button (next to the Audio Coding Mode
pop-up menu), Compressor makes its best guess at the intended audio coding mode,
based on available source audio files.
3/1 channels 3/0 channels
2/2 channels
1/0 channels
2/1 channels
2/0 channels
(LFE option not available) (LFE option not available)
3/2 channels
L C
LFE
LFE LFE
LFE LFE
LFE LFE
R
Ls Rs
L R
Ls Rs
L R L R
S
L C R
S
L C
C
R
Note: In the Audio Coding Mode pop-up menu, “S” stands for a single rear “Surround”
channel, and in this illustration, “LFE” stands for Low Frequency Effects (also known as
“subwoofer”). For more information, see Assigning Files to Surround Sound Channels
(Manual Method) and Assigning Files to Surround Sound Channels (Automatic Methods).
• Enable Low Frequency Effects: Select this checkbox to include the LFE channel in the
encoded stream (not available for 1/0 mono or 2/0 stereo).
• Sample Rate: Specifies the sample rate. All files intended for video and audio DVD
authoring must have a 48 kHz sample rate as per the DVD specification. The 32 kHz
and 44.1 kHz sample rates are available only when Generic AC-3 is the target system.
• Data Rate: The choices depend on the coding mode and target system. The higher the
rate, the better the quality. AC-3 streams have a constant data rate. At 448 kbps, which
is the default for 5.1 encoding, one minute of AC-3 audio takes about 3.3 MB of storage
space. For stereo encoding, rates of 192 kbps and 224 kbps are typical and will produce
good results.
• Bit Stream Mode: Defines the purpose of the encoded audio material. The information
is included in the finished stream and can be read by some decoding systems.
146 Chapter 12 Creating Dolby Digital Professional Output Files