AX
application/octet-stream
Magic Bytes
Offset: 0
4D 5A
The AX file format is a DirectShow filter library developed by Microsoft for the Windows multimedia framework. These files function as modular plugins for decoding, processing, or rendering audio and video streams within compatible media players. Although largely superseded by the Media Foundation framework, AX files share the underlying executable architecture of dynamic link libraries and typically require administrative registration to function within the Windows operating system.
Validation Code
How to validate .ax files in Python
Python
def is_ax(file_path: str) -> bool:
"""Check if file is a valid AX by magic bytes."""
signature = bytes([0x4D, 0x5A])
with open(file_path, "rb") as f:
return f.read(2) == signatureHow to validate .ax files in Node.js
Node.js
function isAX(buffer: Buffer): boolean {
const signature = Buffer.from([0x4D, 0x5A]);
return buffer.subarray(0, 2).equals(signature);
}
Go
func IsAX(data []byte) bool {
signature := []byte{0x4D, 0x5A}
if len(data) < 2 {
return false
}
return bytes.Equal(data[:2], signature)
}API Endpoint
GET
/api/v1/ax
curl https://filesignature.org/api/v1/ax