YUV (.yuv)
.yuv file signature | application/octet-stream
YUV is a raw video data format based on the Y'CbCr color model and used by many multimedia applications; it is not maintained by a single standards body. It is commonly used for uncompressed video frames, camera output, codec testing, and image processing pipelines. Because it stores uncompressed pixel data, files can be large, but the format is generally safe and has little historical association with security issues.
Magic Bytes
Offset 0
46 4F 52 4D
Sources: Wikipedia
All Known Signatures
2 signature variants are documented for .yuv files across multiple sources.
Extension
.yuv
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .yuv files in Python
def is_yuv(file_path: str) -> bool:
"""Check if file is a valid YUV by magic bytes."""
signature = bytes([0x46, 0x4F, 0x52, 0x4D])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .yuv files in Node.js
function isYUV(buffer: Buffer): boolean {
const signature = Buffer.from([0x46, 0x4F, 0x52, 0x4D]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .yuv files in Go
func IsYUV(data []byte) bool {
signature := []byte{0x46, 0x4F, 0x52, 0x4D}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/yuv
curl https://filesignature.org/api/v1/yuv
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .yuv file?
A .yuv file is identified by the magic bytes 46 4F 52 4D at byte offset 0. YUV is a raw video data format based on the Y'CbCr color model and used by many multimedia applications; it is not maintained by a single standards body. It is commonly used for uncompressed video frames, camera output, codec testing, and image processing pipelines. Because it stores uncompressed pixel data, files can be large, but the format is generally safe and has little historical association with security issues.
What are the magic bytes for .yuv files?
The magic bytes for YUV files are 46 4F 52 4D at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .yuv file?
To validate a .yuv file, read the first bytes of the file and compare them against the known magic bytes (46 4F 52 4D) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .yuv files?
There is no officially registered MIME type for .yuv files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .yuv files?
YUV (.yuv) 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.