Quicktime File Format (2012-08-14).pdf

ContentsAudio Sample Rate for a Sample Entry 417Audio Variable Bit Rate Indication 418Audio Channel Count 419Audio Priming - Handling Encoder Delay in AAC 421Background – AAC Encoding 421The Timing and Synchronization Problem 422Historical Solution—Implicit Encoder Delay 423Using Track Structures to Represent Encoder Delay Explicitly 424Edit List Atom 424Sample Group Structures 425Example—Representing Encoder Delay Explicitly 429Audio Data 430Track Structures 430Summary—Using Track Structures to Represent Encoder Delay 432Document Revision History 433Glossary 4362012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.10