rtprtxsend

See GstRtpRtxReceive for examples

The purpose of the sender RTX object is to keep a history of RTP packets up to a configurable limit (max-size-time or max-size-packets). It will listen for upstream custom retransmission events (GstRTPRetransmissionRequest) that comes from downstream (#GstRtpSession). When receiving a request it will look up the requested seqnum in its list of stored packets. If the packet is available, it will create a RTX packet according to RFC 4588 and send this as an auxiliary stream. RTX is SSRC-multiplexed

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──rtprtxsend

Factory details

Authors: – Julien Isorce

Classification:Codec

Rank – none

Plugin – rtpmanager

Package – GStreamer Good Plug-ins

Pad Templates

sink

application/x-rtp:

Presencealways

Directionsink

Object typeGstPad


src

application/x-rtp:

Presencealways

Directionsrc

Object typeGstPad


Properties

clock-rate-map

“clock-rate-map” GstStructure *

Map of payload types to their clock rates

Flags : Read / Write


max-size-packets

“max-size-packets” guint

Amount of packets to queue (0 = unlimited)

Flags : Read / Write

Default value : 100


max-size-time

“max-size-time” guint

Amount of ms to queue (0 = unlimited)

Flags : Read / Write

Default value : 0


num-rtx-packets

“num-rtx-packets” guint

Number of retransmission packets sent

Flags : Read

Default value : 0


num-rtx-requests

“num-rtx-requests” guint

Number of retransmission events received

Flags : Read

Default value : 0


payload-type-map

“payload-type-map” GstStructure *

Map of original payload types to their retransmission payload types

Flags : Read / Write


ssrc-map

“ssrc-map” GstStructure *

Map of SSRCs to their retransmission SSRCs for SSRC-multiplexed mode (default = random)

Flags : Read / Write


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