RealMedia streaming media file (.rm)
.rm file signature | application/vnd.rn-realmedia
RealMedia streaming media file
Magic Bytes
Offset 0
2E 52 4D 46
Sources: Apache Tika, Gary Kessler
Extension
.rm
MIME Type
application/vnd.rn-realmedia
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .rm files in Python
def is_rm(file_path: str) -> bool:
"""Check if file is a valid RM by magic bytes."""
signature = bytes([0x2E, 0x52, 0x4D, 0x46])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .rm files in Node.js
function isRM(buffer: Buffer): boolean {
const signature = Buffer.from([0x2E, 0x52, 0x4D, 0x46]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .rm files in Go
func IsRM(data []byte) bool {
signature := []byte{0x2E, 0x52, 0x4D, 0x46}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/rm
curl https://filesignature.org/api/v1/rm
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .rm file?
A .rm file is a RealMedia streaming media file file. RealMedia streaming media file
What are the magic bytes for .rm files?
The magic bytes for RealMedia streaming media file files are 2E 52 4D 46 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .rm file?
To validate a .rm file, read the first bytes of the file and compare them against the known magic bytes (2E 52 4D 46) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .rm files?
The primary MIME type for .rm files is application/vnd.rn-realmedia.
Is it safe to open .rm files?
RealMedia streaming media file (.rm) 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.