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RealMedia streaming media file (.rmvb)

.rmvb file signature | application/octet-stream

RealMedia streaming media file

Safe

Magic Bytes

Offset 0
2E 52 4D 46

Sources: Gary Kessler

Extension

.rmvb

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .rmvb files in Python

Python
def is_rmvb(file_path: str) -> bool:
    """Check if file is a valid RMVB by magic bytes."""
    signature = bytes([0x2E, 0x52, 0x4D, 0x46])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .rmvb files in Node.js

Node.js
function isRMVB(buffer: Buffer): boolean {
  const signature = Buffer.from([0x2E, 0x52, 0x4D, 0x46]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .rmvb files in Go

Go
func IsRMVB(data []byte) bool {
    signature := []byte{0x2E, 0x52, 0x4D, 0x46}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

GET /api/v1/rmvb
curl https://filesignature.org/api/v1/rmvb

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .rmvb file?

A .rmvb file is a RealMedia streaming media file file. RealMedia streaming media file

What are the magic bytes for .rmvb 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 .rmvb file?

To validate a .rmvb 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 .rmvb files?

There is no officially registered MIME type for .rmvb files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .rmvb files?

RealMedia streaming media file (.rmvb) 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.