@type t() :: %ISOMedia.TrackInfo{
  channels: pos_integer() | nil,
  codec: String.t(),
  duration: non_neg_integer(),
  format: String.t(),
  height: pos_integer() | nil,
  language: String.t(),
  sample_rate: pos_integer() | nil,
  timescale: pos_integer(),
  track_id: pos_integer(),
  type: type(),
  width: pos_integer() | nil
}

@type type() :: :video | :audio