High Efficiency Image File Format Sequence

import magic
print(magic.from_file('burst.heifs', mime=True)) # May output generic 'image/heif' based on the library's magic file

const FileType = require('file-type');
const type = await FileType.fromFile('burst.heifs');
console.log(type.mime); // Typically resolves to image/heif

import "net/http"

// Custom ISOBMFF parsing is strongly recommended to read the 'msf1' brand from the ftyp box.

$mime = mime_content_type('burst.heifs');
echo $mime; // Standard implementations often map this to application/octet-stream or image/heif