Skip to content

Ogg Vorbis Codec compressed Multimedia file magic bytes (.oga)

.oga file signature: 4F 67 67 53 | audio/ogg

Category: Audio

Ogg Vorbis Audio (OGA) is a lossy audio file format based on the Ogg container and maintained by the Xiph.Org Foundation. It is used for music playback, streaming audio, archival storage, and distribution in software, web, and multimedia applications. The format is generally safe to open, though malformed files or parser vulnerabilities in media players can still cause crashes or expose software bugs.

Safe

Magic Bytes

Offset 0
4F 67 67 53

Sources: Wikipedia

All Known Signatures

2 signature variants are documented for .oga files across multiple sources.

Hex Signature Offset Sources
4F 67 67 53 0 Wikipedia
4F 67 67 53 00 02 00 00 00 00 00 00 00 00 0 Gary Kessler

Validation Code

How to validate .oga files in Python

Python
def is_oga(file_path: str) -> bool:
    """Check if file is a valid OGA by magic bytes."""
    signature = bytes([0x4F, 0x67, 0x67, 0x53])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .oga files in Node.js

Node.js
function isOGA(buffer: Buffer): boolean {
  const signature = Buffer.from([0x4F, 0x67, 0x67, 0x53]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .oga files in Go

Go
func IsOGA(data []byte) bool {
    signature := []byte{0x4F, 0x67, 0x67, 0x53}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

GET /api/v1/oga
curl https://filesignature.org/api/v1/oga

See the full API documentation for all endpoints and parameters.

Related Formats

Frequently Asked Questions

What is a .oga file?

A .oga file is an Ogg Vorbis Codec compressed Multimedia file. Ogg Vorbis Audio (OGA) is a lossy audio file format based on the Ogg container and maintained by the Xiph.Org Foundation. It is used for music playback, streaming audio, archival storage, and distribution in software, web, and multimedia applications. The format is generally safe to open, though malformed files or parser vulnerabilities in media players can still cause crashes or expose software bugs.

What are the magic bytes for .oga files?

The magic bytes for Ogg Vorbis Codec compressed Multimedia file (.oga) files are 4F 67 67 53 at byte offset 0. These bytes identify the file format more reliably than the extension alone.

How do I validate a .oga file?

To validate a .oga file, read the first bytes of the file and compare them against the known magic bytes (4F 67 67 53) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .oga files?

The primary MIME type for .oga files is audio/ogg.

Is it safe to open .oga files?

Ogg Vorbis Codec compressed Multimedia file (.oga) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.