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There are two methods you can use to add audio files to a batch to create a surround sound job: an automatic method that relies on file naming to map the audio files to the proper channels and a manual method that allows you to manually assign the audio files to the channels.

Each method results in a job to which you can add a setting that supports surround sound audio outputs, such as Dolby Digital Professional, AIFF, and several audio codecs in the QuickTime Movie output format.

Important: Some of the output formats have multiple configurations for the surround sound audio channels. Be sure you know which configuration your intended playback device requires. For example, the AIFF output format provides four different configurations for 5.1 (six-channel) audio outputs, with the difference being the order of the channels.

Assigning Files to Surround Sound Channels (Automatic Method)

Compressor offers some streamlined channel assignment techniques that can save you time.

To assign files to surround channels with channel identifier codes

1 Append the channel identifier code of the target surround channel to the filename of each source audio file. (See the list below for the appropriate channel identifier codes.) • -L:Left front channel

• -R: Right front channel • -C:Center front channel • -Ls: Left surround channel • -Rs:Right surround channel • -S: Center surround channel

• -LFE:Low frequency channel (Subwoofer, LFE)

For example, to assign an AIFF file to the left surround channel, rename the file as filename-Ls.aiff (wherefilenameis the name of your file). (The channel identifier codes must include the hyphen, as shown.)

Note: Mac OS X may add a file extension like .aiff. This willnotinterfere with this channel assignment method.

This procedure works only when you drag and drop files into the Batch window. If you drag the files onto the Compressor application icon, they will appear as separate source files, each in its own job.

Note: If you are creating Dolby Digital Professional (AC-3) surround sound streams, you will not use all the channels listed in the table at once. SeeAudio Tab Settingsfor a diagram of the Dolby audio coding modes.

2 Drag the renamed source audio files to the Batch window.

If the following conditions are met, Compressor automatically collapses the entire group of files into what appears as a single surround source media file in the Batch window: • The files in the group must be named correctly. (See the list in the previous step.) • The total number of files in the group must be fewer than seven.

Assigning Files to Surround Sound Channels (Manual Method)

Follow these steps to use the manual method for assigning individual audio files to surround sound channels. Additionally, you can add a video file to the surround sound job.

To manually assign source audio files to channels of a surround sound stream

1 Do one of the following to import the source audio files:

• Choose Job > New Job With Surround Sound Group (or press Command-Control-I). • Click the Add Surround Sound button in the Batch window.

• Control-click in the batch and choose New Job With Surround Sound Group from the shortcut menu.

The channel assignment interface opens.

2 Do one of the following to assign a source audio file to a particular channel:

• Drag the source audio file from the Finder to the icon for a specific channel (for example, “L”).

• Click the icon for a specific channel (for example, “L”) and use the Open dialog to locate the source audio file intended for that channel.

3 Repeat step 2 for each of the source audio files that you intend to include in the surround stream.

Note: If you are creating Dolby Digital Professional (AC-3) surround sound streams, you will not use all the channels listed in the table at once. SeeAudio Tab Settingsfor a diagram of the Dolby audio coding modes.

4 Optionally, click the Add Video button to select a video file to include with the surround sound job.

5 When you have finished adding source audio and video files to the channel assignment interface, click OK.

The group of surround files appears as a single surround source media file job in the Batch window.

About Surround Sound Jobs

Once you have created a surround sound job, the Batch window shows the surround sound icon in the source media file thumbnail (unless a video file was added to the job) and the Inspector window shows the channels and their assigned files.

Click a channel’s icon to change the file assigned to that channel.

You can change any of the file assignments in the Inspector window. To change a surround sound file assignment

1 Click the speaker icon of the channel you want to change. A file selection dialog opens.

2 Locate the file to assign to that channel and click Open.

3 Optionally, you can either click Add Video to add a video file to the job, or delete the video file already assigned and then click Add Video to choose a different video file. SeeCreating Dolby Digital Professional Output Filesfor information on creating Dolby Digital Professional output files.