View Source Membrane.RTP.Parser (Membrane RTP plugin v0.28.0)

Identifies RTP/RTCP packets, then tries to parse RTP packet (parsing header and preparing payload) and forwards RTCP packet to :rtcp_output pad unchanged.

Encrypted packets

In case of SRTP/SRTCP the parser tries to parse just the header of the RTP packet as the packet's payload is encrypted and must be passed as a whole to the decryptor. The whole packet remains unchanged but the parsed header gets attached to Membrane.Buffer's metadata.

SRTP is treated the same as RTCP and all packets gets forwarded to :rtcp_output pad.

Parsed packets

In both cases, encrypted and unencryptd, parsed header is put into the metadata field in Membrane.Buffer under :rtp key. with the following metadata :timestamp, :sequence_number, :ssrc, :payload_type, :marker, :extension. See Membrane.RTP.Header for their meaning and specifications.

Element options

Passed via struct Membrane.RTP.Parser.t/0

  • secure?

    any

    Default value: false
    Specifies whether Parser should expect packets that are encrypted or not. Requires adding srtp dependency to work.

Pads

:input

Accepted formats:

%RemoteStream{type: :packetized, content_format: cf} when cf in [nil, RTP, RTCP]
Direction::input
Availability::always
Flow control::auto

:rtcp_output

Accepted formats:

%RemoteStream{content_format: RTCP, type: :packetized}
Direction::output
Availability::on_request
Flow control::push

:output

Accepted formats:

RTP
Direction::output
Availability::always
Flow control::auto

Summary

Types

t()

Struct containing options for Membrane.RTP.Parser

Functions

Returns description of options available for this module

Types

@type t() :: %Membrane.RTP.Parser{secure?: any()}

Struct containing options for Membrane.RTP.Parser

Functions

@spec options() :: keyword()

Returns description of options available for this module