{"success":true,"data":{"ext":"mmf","name":"Yamaha Corp","description":"Mobile Application Format (MMF), also known as SMAF, is a multimedia file format developed by Yamaha Corporation. It was used for storing synthetic music, ringtones, and simple multimedia content on mobile phones and other handheld devices. The format is largely legacy today, and files are generally low risk, though support may be limited in modern software and some content may not play correctly.","mime":["application/vnd.smaf"],"risk_level":"Safe","signatures":[{"hex":"4D 4D 4D 44 00 00","offset":0,"sources":[{"name":"Gary Kessler","url":"https://www.garykessler.net/library/file_sigs_GCK_latest.html"}]}],"related":[],"usage":{"python":"def is_mmf(file_path: str) -> bool:\n    \"\"\"Check if file is a valid MMF by magic bytes.\"\"\"\n    signature = bytes([0x4D, 0x4D, 0x4D, 0x44, 0x00, 0x00])\n    with open(file_path, \"rb\") as f:\n        return f.read(6) == signature","node":"function isMMF(buffer: Buffer): boolean {\n  const signature = Buffer.from([0x4D, 0x4D, 0x4D, 0x44, 0x00, 0x00]);\n  return buffer.subarray(0, 6).equals(signature);\n}","go":"func IsMMF(data []byte) bool {\n    signature := []byte{0x4D, 0x4D, 0x4D, 0x44, 0x00, 0x00}\n    if len(data) < 6 {\n        return false\n    }\n    return bytes.Equal(data[:6], signature)\n}"}}}