RealMedia streaming media file (.rmvb)
.rmvb file signature | application/octet-stream
RealMedia Variable Bitrate (RMVB) is a RealMedia multimedia container format developed by RealNetworks for delivering streaming audio and video. It is used for online playback, downloading, and archival of compressed media content in players and applications that support the RealMedia ecosystem. RMVB is now largely a legacy format, and support has declined across modern platforms, but files are generally safe to open when sourced from trusted providers.
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
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) == signatureHow to validate .rmvb files in 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
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
/api/v1/rmvb
curl https://filesignature.org/api/v1/rmvb
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .rmvb file?
A .rmvb file is a RealMedia streaming media file file. RealMedia Variable Bitrate (RMVB) is a RealMedia multimedia container format developed by RealNetworks for delivering streaming audio and video. It is used for online playback, downloading, and archival of compressed media content in players and applications that support the RealMedia ecosystem. RMVB is now largely a legacy format, and support has declined across modern platforms, but files are generally safe to open when sourced from trusted providers.
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.