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Wii/GameCube videofile (.thp)

.thp file signature | application/octet-stream

The THP format is a video file format used by Nintendo for GameCube and Wii software. It is used to store cinematic cutscenes, intro sequences, and other embedded video assets in games and related applications. As a legacy console format, it is generally safe to handle, though playback support is limited outside Nintendo-specific tools and emulators, and files from untrusted sources should still be treated with standard caution.

Safe

Magic Bytes

Offset 0
54 48 50 00

Sources: Gary Kessler

Extension

.thp

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .thp files in Python

Python 
def is_thp(file_path: str) -> bool:
    """Check if file is a valid THP by magic bytes."""
    signature = bytes([0x54, 0x48, 0x50, 0x00])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .thp files in Node.js

Node.js 
function isTHP(buffer: Buffer): boolean {
  const signature = Buffer.from([0x54, 0x48, 0x50, 0x00]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .thp files in Go

Go 
func IsTHP(data []byte) bool {
    signature := []byte{0x54, 0x48, 0x50, 0x00}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .thp file?

A .thp file is a Wii/GameCube videofile file. The THP format is a video file format used by Nintendo for GameCube and Wii software. It is used to store cinematic cutscenes, intro sequences, and other embedded video assets in games and related applications. As a legacy console format, it is generally safe to handle, though playback support is limited outside Nintendo-specific tools and emulators, and files from untrusted sources should still be treated with standard caution.

What are the magic bytes for .thp files?

The magic bytes for Wii/GameCube videofile files are 54 48 50 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .thp file?

To validate a .thp file, read the first bytes of the file and compare them against the known magic bytes (54 48 50 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .thp files?

There is no officially registered MIME type for .thp files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .thp files?

Wii/GameCube videofile (.thp) 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.