thumbnail = bytes + result ->
  resample = ext <
                   name : 'resample.exe', mode : STD_STREAM_IO
                   parameters : { '--format=jpeg', '--size=128x96', length, '-', '-' }
                   workdir : path
                 >
  ' length = '--length=' bytes._
  ' path -- parse -r file-names.1 path '/' .

  result = char-in resample.std-out
  ' - char-out resample.std-in bytes
_
  bytes, result : array : integer : 2^8
;