---
title: Extra information TLVs
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/packet_entry/extra_information_tlvs
---

# Extra information TLVs

A list of extra informtion that extends the hint track format without changing the version.

## Overview

Overview The extra information TLVs listed in the following table are present if and only if the X bit is set in the flags field. This provides a way of extending the hint track format without changing the version, while allowing backward compatibility.  |   |   |   |   |   |   |   |   |   |  |   |  |

## See Also

### Data fields

- [Relative packet transmission time](quicktime-file-format/packet_entry/relative_packet_transmission_time.md)
- [RTP header info](quicktime-file-format/packet_entry/rtp_header_info.md)
- [RTP sequence number](quicktime-file-format/packet_entry/rtp_sequence_number.md)
- [Flags](quicktime-file-format/packet_entry/flags.md)
- [Entry count](quicktime-file-format/packet_entry/entry_count.md)
- [Data table](quicktime-file-format/packet_entry/data_table.md)