User manual APPLE COMPRESSOR 4

[. . . ] Compressor 4 User Manual Copyright © 2012 Apple Inc. 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. [. . . ] See Open and Closed GOPs for more information. • Open: Select this button to create open GOPs. • Closed: Select this button to create closed GOPs. • GOP Size pop-up menu: Choose how many frames are contained within your GOP, following the format of the chosen GOP structure. The maximum GOP size you can choose within Compressor is 15 frames (NTSC) or 12 frames (PAL and 720p). The minimum GOP size for all video formats is 6 frames (closed GOP) or 7 frames (open GOP). The relationship between GOP structure and GOP size gives you GOP patterns. See Understanding GOPs and Frame Types and GOP Size for more information. • Pattern field: This field cannot be edited but displays the actual GOP pattern based on your chosen GOP structure and size. 204 Chapter 18 Creating MPEG-2 Output Files Extras Tab You use the Extras tab to control the inclusion or exclusion of specific MPEG-2 authoring information. 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. All Apple settings have this box checked by default. 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. [. . . ] • Submits the password “testpassword. ” • Assigns the batch name My First Batch. • Finds the MySource. mov file for the job at ~/Movies/MySource. mov. • Uses the MPEG-4 setting at ~/Library/Application\ Support/Compressor/Settings/MPEG-4. setting. • Writes the output file, named MyOutput. mp4, to the ~/Movies folder. [. . . ]