@type t() :: %Membrane.RTMP.Messages.Connect{
  app: String.t(),
  audio_codecs: float() | nil,
  extra: %{optional(String.t()) => any()},
  flash_version: String.t() | nil,
  fpad: boolean() | nil,
  object_encoding: float() | nil,
  page_url: String.t() | nil,
  swf_url: String.t() | nil,
  tc_url: String.t(),
  tx_id: float() | non_neg_integer(),
  video_codecs: float() | nil,
  video_function: float() | nil
}