rtprecv

RTP session management (receiver).

Environment variables

The underlying Runtime can be fine-tuned process-wide using the following env vars:

• 'GST_RTPBIN2_RT_WORKER_THREADS': number of worker threads the Runtime will use (default: 1) 0 => number of cores available on the system.
• 'GST_RTPBIN2_RT_MAX_BLOCKING_THREADS': limit for the number of threads in the blocking pool (default: 512). When they push buffers, downstream events or handle downstream queries, rtpbin2 elements spawn a thread from the blocking pool. This is to avoid blocking the worker thread which is shared with other elements running on the same runtime.
• 'GST_RTPBIN2_RT_THREAD_KEEP_ALIVE': timeout for a thread in the blocking pool in ms (default: 10s).

Example pipeline

 gst-launch-1.0 \
  udpsrc port=5004 caps='application/x-rtp, media=audio, clock-rate=48000, encoding-name=OPUS, encoding-params=(string)1, sprop-stereo=(string)0, payload=96' \
  ! queue max-size-bytes=0 max-size-buffers=0 max-size-time=200000000 ! recv.rtp_sink_0 \
  udpsrc port=5005 caps='application/x-rtcp' \
  ! recv.rtcp_sink_0 \
  rtprecv name=recv rtp-id=example-rtp-id latency=200 \
  ! rtpopusdepay2 ! opusdec ! audioconvert ! audioresample ! queue max-size-bytes=0 max-size-buffers=1 max-size-time=0 ! autoaudiosink \
  rtpsend name=send rtp-id=example-rtp-id \
  send.rtcp_src_0 ! udpsink port=5007 host=127.0.0.1 async=false

This will process incoming RTP & RTCP packets from UDP ports 5004 & 5005, provided the RTP packets contain an Opus encoded audio stream, and will send RTCP back to the sender on UDP port 5007. See rtpsend for an example of how to produce such packets.