User manual APPLE COMPRESSOR 4
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Manual abstract: user guide APPLE COMPRESSOR 4
Detailed instructions for use are in the User's Guide.
[. . . ] Your rights to the software are governed by the accompanying software license agreement. The owner or authorized user of a valid copy of Compressor software may reproduce this publication for the purpose of learning to use such software. No part of this publication may be reproduced or transmitted for commercial purposes, such as selling copies of this publication or for providing paid for support services. Use of the “keyboard” Apple logo (Shift-Option-K) for commercial purposes without the prior written consent of Apple may constitute trademark infringement and unfair competition in violation of federal and state laws. [. . . ] The Extras tab contains the following controls.
• Add DVD Studio Pro metadata: Selecting this checkbox allows Compressor to parse specific MPEG-2 authoring information during the transcoding process to accelerate the import process into DVD Studio Pro. However, these MPEG-2 files will be incompatible with versions of DVD Studio Pro 1. 5 or earlier. Leaving the checkbox unselected means the information will be parsed later in DVD Studio Pro. Note: MPEG-2 streams with additional DVD Studio Pro metadata are only compatible with DVD Studio Pro 2 (or later) versions. MPEG-2 streams with this checkbox selected will not be compatible with versions prior to DVD Studio Pro 2 or with other DVD authoring tools. To make your MPEG-2 files compatible with other DVD authoring tools, deselect this checkbox, and then save the setting. • Include Chapter Markers only: Selecting this checkbox excludes unnamed compression markers from the stream but still retains the chapter markers. Leaving the checkbox unselected allows all markers to be recognized in the output media file. See Adding Compression or Podcast Markers to a Clip for more information about chapter markers. • YUV 4:2:2 Color encoding (Not for DVD use): Select this checkbox to enable 4:2:2 color encoding. This option is supported in the creation of MPEG-2 elementary, program, and transport streams, but it is only available when the Stream Usage pop-up menu is set to Generic. • Multiplexed MPEG-1/Layer 2 Audio: Use this checkbox to create a multiplexed stream (rather than an elementary stream). You can make the output file either a transport stream or a program stream. See About Elementary, Transport, and Program Streams for information on the differences between the different stream types. The audio in this stream is MPEG-1 Layer 2, with a sample rate of 44. 1 kHz or 48 kHz (depending on the source) and a bit rate of 384 kbps. To create an audio-only (MPEG-1/Layer 2 Audio) elementary stream, see Creating the MPEG-1 Audio for DVD Setting.
Creating MPEG-2 Output Files
Important: Generic is the only Stream Usage setting that supports transport and program streams. Selecting the Multiplexed MPEG-1/Layer 2 Audio checkbox sets your stream usage to Generic if it is currently anything else.
MPEG-2 Reference Information
The following sections contain useful information for creating MPEG-2 output media files.
About Choosing the Bit Rates
When determining average and maximum bit rates for standard DVD playback, remember to consider the bit rate of your audio track as well as the MPEG-2 bit rate. You must keep the total of both average and maximum audio and video bit rates under 10. 08 Mbps, the maximum guaranteed transfer rate from standard DVD players. Because DVD-compatible audio formats are constant bit rate (CBR), there is no maximum audio bit rate to worry about. For example, if you are using AIFF audio at 1. 5 Mbps, you should keep both the average and maximum video bit rates under 8. 5 Mbps. Typically, your average bit rate will be lower than this (for example, 3. 5 Mbps for 2 hours of footage on your DVD). A maximum bit rate of 8. 0 Mbps is recommended to provide an extra margin for error (for example, to accommodate subtitle streams). [. . . ] • Writes the output file, named MyOutput. mp4, to the ~/Movies folder. • Sets the command to time out after five seconds of looking for the cluster.
Appendix C Using the Command Line
Submit a Job with a Password The following submits a job to a cluster identified by a name that does have a password.
/Applications/Compressor. app/Contents/MacOS/Compressor -clustername MyCluster -password testpassword -batchname "My First Batch" -jobpath ~/Movies/MySource. mov -settingpath ~/Library/Application\ Support/Compressor/Settings/MPEG-4. setting -destinationpath ~/Movies/MyOutput. mp4 -timeout 5
This command has the following elements: • Identifies where Compressor is located. • Submits the password “testpassword. ” • Assigns the batch name My First Batch. • Finds the MySource. mov file for the job at ~/Movies/MySource. mov. [. . . ]
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