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
This does not happen with MPEG-2 elementary files encoded using Compressor that had
the “Add DVD Studio Pro metadata” checkbox selected. See Extras Tab for more
information.
About Dolby Digital Professional Source Media Files
You can use Dolby Digital Professional AC-3 audio files as source media files for your jobs.
There are two common reasons to want to do this.
• To test a file you just encoded: Since you cannot preview the Dolby Digital Professional
output settings, importing an encoded file into a job allows you to play it and verify
the settings.
• To convert a Dolby Digital audio file to another format: Since not all media players include
Dolby Digital decoders, you may find that you need to transcode the file into another
format.
Compressor includes a Dolby Digital decoder that it uses whenever you play or transcode
Dolby Digital audio files. This makes it possible to verify the Dolby Digital Professional
output settings of a previously encoded file on your system without requiring you to
have an external Dolby Digital decoder. To hear surround sound you must have an external
surround sound device connected to your computer’s USB or FireWire output. The audio
is mixed down to two channels if you play the audio using your system’s stereo speakers.
Important: Since the audio output is already decoded and not in the Dolby Digital format,
the optical output cannot be used when playing Dolby Digital files from Compressor.
Tip: Add an .ac3 extension to the filename if Compressor does not allow you to add it to
a job.
Automatic Values and Nonstandard QuickTime Files
Compressor uses a variety of tactics to determine the proper values for any settings that
are set to Automatic. In most cases, QuickTime files contain metadata that specify the
various attributes of the file, such as frame rate and frame size. In some cases, this metadata
is not present, forcing Compressor to try to determine this information, or it is incorrect,
causing Compressor to generate incorrect values for the Automatic settings.
Additionally, some QuickTime files use nonstandard settings that require Compressor to
choose an automatic value that may not be suitable.
For these reasons, it is a good idea to verify the values in the Inspectors for those settings
that are set to automatic. See About the Automatic Settings for more information.
93Chapter 6 Importing Source Media Files