# ffmpeg -f lavfi -i sine -t 10ms test.mp3
$ fq -i . test.mp3
mp3> .headers[0].magic == "ID3"
true
mp3> .headers[0].version == 4
true
mp3> .frames[0].header.protection == true
false
mp3> .headers[0].flags + {}
{
  "experimental_indicator": false,
  "extended_header": false,
  "unsynchronisation": false,
  "unused": 0
}
mp3> ._unknown
false
mp3> format
"mp3"
mp3> .headers[0].magic | format
null
mp3> ._format
"mp3"
mp3> .headers[0].magic._format
null
mp3> ^D
$ fq -d raw .
   |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: <stdin> (raw)
0x0|61 62 63 0a|                                   |abc.|           |  unknown0: raw bits
stdin:
abc