# Ogg, an open source media container format — file signature 4F 67 67 53 at offset 0

For Ogg, an open source media container format, hex signature is 4F 67 67 53; offset is 0; extension is ogg oga ogv, verified against its source on 2026-09-22.

- **Hex signature:** 4F 67 67 53 _(verified: appears in the quote below)_
- **Offset:** 0 _(verified: appears in the quote below)_
- **Extension:** ogg oga ogv _(verified: appears in the quote below)_
- **Format:** Ogg, an open source media container format _(verified: appears in the quote below)_

## What the source says

> 4F 67 67 53 | OggS | 0 | ogg oga ogv | Ogg, an open source media container format |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-09-22. Review by: 2027-09-22.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).