<!--
{
  "availability" : [

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

# Flags

A 3-byte space for video media information flags.

## Overview

There is one defined flag.

- No lean ahead: This is a compatibility flag that allows QuickTime to distinguish between movies created with QuickTime 1.0 and newer movies. Always set this flag to `1`, unless you are creating a movie intended for playback using version 1.0 of QuickTime. This flag’s value is `0x0001`.

---

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)