MPD
application/dash+xml
Magic Bytes
Offset: 0
3C 4D 50 44
Media Presentation Description (MPD) is an XML-based manifest format defined by the Moving Picture Experts Group (MPEG) for the DASH adaptive streaming standard. This file functions as an index, detailing available media segments, resolutions, and bitrates to enable video players to dynamically adjust quality based on network conditions. As a plain text XML document, the format poses minimal direct security risk, though it is critical for modern internet video delivery infrastructures.
Validation Code
How to validate .mpd files in Python
Python
def is_mpd(file_path: str) -> bool:
"""Check if file is a valid MPD by magic bytes."""
signature = bytes([0x3C, 0x4D, 0x50, 0x44])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .mpd files in Node.js
Node.js
function isMPD(buffer: Buffer): boolean {
const signature = Buffer.from([0x3C, 0x4D, 0x50, 0x44]);
return buffer.subarray(0, 4).equals(signature);
}
Go
func IsMPD(data []byte) bool {
signature := []byte{0x3C, 0x4D, 0x50, 0x44}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
GET
/api/v1/mpd
curl https://filesignature.org/api/v1/mpd