# Ap4ObjectDescriptor.h File Reference

`#include "Ap4List.h"`
`#include "Ap4String.h"`
`#include "Ap4Descriptor.h"`
`#include "Ap4Command.h"`

Go to the source code of this file.

## Classes
class | AP4_ObjectDescriptor
class | AP4_InitialObjectDescriptor
class | AP4_DescriptorUpdateCommand
| This class is used for ObjectDescriptorUpdateCommand and IPMP_DescriptorUpdateCommand. More...
## Variables
const AP4_UI08 | AP4_DESCRIPTOR_TAG_OD = 0x01
const AP4_UI08 | AP4_DESCRIPTOR_TAG_IOD = 0x02
const AP4_UI08 | AP4_DESCRIPTOR_TAG_MP4_OD = 0x11
const AP4_UI08 | AP4_DESCRIPTOR_TAG_MP4_IOD = 0x10

## Variable Documentation

const AP4_UI08 AP4_DESCRIPTOR_TAG_IOD = 0x02

Definition at line 49 of file Ap4ObjectDescriptor.h.

const AP4_UI08 AP4_DESCRIPTOR_TAG_MP4_IOD = 0x10

Definition at line 51 of file Ap4ObjectDescriptor.h.

const AP4_UI08 AP4_DESCRIPTOR_TAG_MP4_OD = 0x11

Definition at line 50 of file Ap4ObjectDescriptor.h.

const AP4_UI08 AP4_DESCRIPTOR_TAG_OD = 0x01

Definition at line 48 of file Ap4ObjectDescriptor.h.