MK3D (.mk3d)
.mk3d file signature | application/octet-stream
MK3D is a Matroska-based multimedia container format developed and maintained by the Matroska project. It is used primarily for storing stereoscopic 3D video, along with audio, subtitles, and chapter metadata, and is supported by various media players and editing tools. As a container format, it is generally safe to open, though malformed files or embedded streams can still affect playback software, so files from untrusted sources should be handled with normal caution.
Magic Bytes
Offset 0
1A 45 DF A3
Sources: Wikipedia
Extension
.mk3d
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .mk3d files in Python
def is_mk3d(file_path: str) -> bool:
"""Check if file is a valid MK3D by magic bytes."""
signature = bytes([0x1A, 0x45, 0xDF, 0xA3])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .mk3d files in Node.js
function isMK3D(buffer: Buffer): boolean {
const signature = Buffer.from([0x1A, 0x45, 0xDF, 0xA3]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .mk3d files in Go
func IsMK3D(data []byte) bool {
signature := []byte{0x1A, 0x45, 0xDF, 0xA3}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/mk3d
curl https://filesignature.org/api/v1/mk3d
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .mk3d file?
A .mk3d file is identified by the magic bytes 1A 45 DF A3 at byte offset 0. MK3D is a Matroska-based multimedia container format developed and maintained by the Matroska project. It is used primarily for storing stereoscopic 3D video, along with audio, subtitles, and chapter metadata, and is supported by various media players and editing tools. As a container format, it is generally safe to open, though malformed files or embedded streams can still affect playback software, so files from untrusted sources should be handled with normal caution.
What are the magic bytes for .mk3d files?
The magic bytes for MK3D files are 1A 45 DF A3 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .mk3d file?
To validate a .mk3d file, read the first bytes of the file and compare them against the known magic bytes (1A 45 DF A3) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .mk3d files?
There is no officially registered MIME type for .mk3d files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .mk3d files?
MK3D (.mk3d) 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.