Apple 7.2 manual 3G Audio Export Options

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ÂImage Size: If you’re sending the file to a mobile phone, choose one of the standards. Current maintains the source material size; the resulting file may not play on a mobile phone. To choose a size not listed in the pop-up menu, choose Custom.

ÂPreserve Aspect Ratio Using: If you are changing the image size, use this option to specify an option in case the movie needs to be scaled to the new dimensions. Letterbox will scale the source proportionally to fit into the clean aperture, adding black bars to the top and bottom or sides as necessary. Crop centers, scales, and trims to the clean aperture. Fit Within Dimensions adjusts to the destination size by fitting to the longest side, scaling if necessary.

ÂFrame Rate: In most cases, your video will look better if you choose a number that is exactly divisible by the FPS (frames per second) of your source. For example, if your source is captured at 30 FPS, choose a frame rate of 10 or 15. Don’t choose a rate larger than that of your source material.

ÂKey Frame: The more often you specify a key frame (the lower the number), the better the video quality, but the bigger the file.

These additional options are available when you click Video Options:

ÂRe-sync markers: Adds re-sync markers inside the video frames to help with packet loss recovery when streaming.

ÂEncoding Mode: With H.264 video, you can speed up the compression process (for preview purposes, for example) by choosing “Faster encode (Single-pass).” With the default option, “Best quality (Multi-pass),” the codec determines how many passes are needed to compress the data for the best quality.

3G Audio Export Options

When you export a movie to 3G format (by choosing File > Export and then choosing “Movie to 3G”), you access the following options by clicking Options and then clicking Audio.

ÂAudio Format: If your source movie has only one audio track and it is already compressed, you can choose “Pass through” (so that the audio doesn’t get compressed again).

ÂData Rate: As with video, the more kilobits per second, the better the audio quality.

ÂChannels: Choose between mono (1 channel) or stereo (2 channels).

ÂFrames per sample: Available only with AMR audio, this option enables exported audio data to be packed more efficiently.

ÂSilence detection: Available only with AMR audio, this option detects audio portions with low signal levels and adjusts the data rate of the output accordingly.

ÂOutput Sample Rate: Available only with AAC audio. It’s best to match the sample rate to that of the target device.

ÂEncoding Quality: Available only with AAC audio. By choosing Best, you can get higher-quality audio but it takes longer to encode.

Chapter 4 Exporting Files with QuickTime Pro

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Contents User’s Guide Apple Inc Apple Inc. All rights reserved Contents Viewing Movies that have Flash Content Using Advanced Playback OptionsSetting a Movie’s Poster Frame Saving a Movie with Specific Playback SettingsAppendix Glossary IndexWhat Is QuickTime Pro? Welcome to QuickTimeWhat’s New in QuickTime 7? New in QuickTime PlayerNew in QuickTime Pro New for Mac OSSystem Requirements Types of Files QuickTime SupportsFor Mac OS computers For Windows computersWhere to Go for Additional Information Using Onscreen HelpChecking for New Versions of QuickTime Using QuickTime Player Opening and Playing Movies in QuickTime PlayerOpening and Playing Files in a Web Browser To download movies before they start playing in Mac OS Adjusting Playback Preferences for Internet MoviesTo download movies before they start playing in Windows Instant-On Viewing Streamed Files Behind a FirewallTo use Http streaming in Mac OS Viewing QuickTime Virtual Reality Qtvr MoviesTo use Http streaming in Windows Viewing Still Images Playing Midi FilesTo specify a different synthesizer in Mac OS To specify a different synthesizer in WindowsOpening Recently Used Files Finding Movies Quickly Using QuickTime FavoritesPlaying Copy-Protected Movies Adjusting Audio and Video Settings Controlling PlaybackViewing Information About a File Changing Playback PreferencesViewing Movies at Full Screen To play a movie at full screen, do one of the followingChanging Movie Size for Playback Looping a MovieSimultaneously Playing Multiple Movies To loop a movieNavigating a Movie by Frame Number or Time Code Using Frame Number and Time CodesDisplaying Frame Numbers, Movie Time, or Time Code Viewing Movies that have Flash Content Preventing Users from Changing QuickTime SettingsFinding Text in a Text Track Getting Started With QuickTime Pro Using Advanced Playback OptionsPlaying a Movie on a Second Display Presenting a Movie as a Slideshow Changing the Color Around a MovieTo play a movie on a second display To play a movie as a slideshowTo adjust memory options for a track Creating Movies and Other MediaLoading Movies into RAM for Better Playback Recording Video and AudioAbout Saving Movies Setting Recording OptionsTo change recording options Saving Movies from the Internet Creating a Slideshow or Animation from Still ImagesTo save an Internet movie on your hard disk To create a slideshow from still imagesConverting Files into QuickTime Movies Creating a Still Image from a MovieTo save a still image from a movie Sharing Movies by Email or the Web To share a movieSimple Editing Editing and Authoring With QuickTime ProSelecting and Playing Part of a Movie Cutting, Copying, or Deleting a Section of a Movie Combining Two QuickTime Movies into OneTo cut, copy, or delete part of a movie To combine two moviesWorking with Tracks Turning Tracks On or OffExtracting, Adding, and Moving Tracks To turn movie tracks on or offWorking with Audio Tracks To extract a track and add it to another movieAdding an Audio Track to a QuickTime Movie To add an audio track to a movieChanging Sound Track Volume Levels and Other Audio Settings To change settings for an audio trackPresenting Multiple Movies in the Same Window To present multiple movies in the same windowPasting Graphics and Text into a Movie Working with Text TracksTo add graphics or text Adding a Text Track to a QuickTime MovieOverlaying a Movie with Text Setting the Frame Duration of a Text TrackSpecifying Font Styles for Text Tracks Specifying Languages for Individual Tracks To specify languagesChanging Movie Properties Adding Annotations to a MovieResizing, Flipping, or Rotating a Movie To annotate a movieChanging a Track’s Transparency Changing a Movie’s Shape with a Video MaskCreating a Chapter List for a Movie Editing and Authoring with QuickTime Pro Saving a Movie with Specific Playback Settings Setting a Movie’s Poster FrameChanging the Movie Controller Type Exporting Files With QuickTime Pro About Video and Audio CompressionExporting Files Using Presets Customizing Export SettingsCustomizing Video Export Settings To export a movie using presetsExporting Files with QuickTime Pro Adding Special Effects and Filters to a QuickTime Movie Changing Image Frame SizeTo set a filter for a movie To change the size of a movie’s video frameTo customize sound settings for export Customizing Sound Export SettingsPreparing Movies for Internet Delivery To set up a movie for Internet streaming Preparing a Movie for Fast StartPreparing a Movie for Real-Time Streaming To convert a movie and set it up for Fast StartExporting MPEG-4 Files Creating Reference Movies to Optimize Web PlaybackMPEG-4 Video Export Options To export a file to the MPEG-4 formatMPEG-4 Audio Export Options MPEG-4 Streaming Export Options Exporting 3G FilesTo export a file to the 3G format 3G File Format Export Options 3G Video Export Options3G Audio Export Options 3G Streaming Options 3G Text Options3G Advanced Options Shortcuts and Tips For this control Press Mac OS Press WindowsQuickTime Pro Keyboard Shortcuts Automating QuickTime Player with AppleScriptAutomating QuickTime Player on Windows Glossary GlossaryGIF Graphics Interchange Format a file format for images PNG Portable Network Graphics a file format for images Index Index
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