<!--
{
  "availability" : [

  ],
  "documentType" : "symbol",
  "framework" : "QuickTime File Format",
  "identifier" : "/documentation/quicktime-file-format/Composition_offset_atom/Entry_count",
  "metadataVersion" : "0.1.0",
  "role" : "Data field",
  "symbol" : {
    "kind" : "Data field",
    "modules" : [
      "QuickTime File Format"
    ],
    "preciseIdentifier" : "__docc_universal_symbol_reference_$Composition_offset_atom_Entry_count"
  },
  "title" : "Entry count"
}
-->

# Entry count

A 32-bit unsigned integer that specifies the number of sample numbers in the array that follows.

## Overview

Following the entry count is a composition-offset table. The layout of the composition-offset table is as follows.

|Field            |Bytes|
|-----------------|-----|
|sampleCount      |4    |
|compositionOffset|4    |

- sampleCount: A 32-bit unsigned integer that provides the number of consecutive samples with the calculated composition offset in the field.
- compositionOffset: A 32-bit signed integer indicating the value of the calculated compositionOffset.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)