GstRtspSink - Multicast Audio Video
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This example combines audio and video under one mapping and serves the session through multicast. It is useful for synchronized one-to-many distribution on multicast-capable networks.
Why this layout is different
The stream contains both audio and video under one mapping, but delivery is optimized for many receivers through multicast.
 | The multicast clients can't be on the same machine as the server. Please use at least 2 machines (one as a server and one as a client). |
GstRtspSink Pipeline
The following pipeline combines an H264 video and an AAC audio stream into a single mapping and serves it to a multicast group found between 239.255.255.253 and 239.255.255.255 and a port between 5000 and 6000.
PORT=12345
MAPPING=/stream
IP_MIN=239.255.255.253
IP_MAX=239.255.255.255
PORT_MIN=5000
PORT_MAX=6000
TTL=128
gst-launch-1.0 rtspsink name=sink \
service=$PORT multicast=true multicast-ip-min=${IP_MIN} multicast-ip-max=${IP_MAX} \
multicast-port-min=${PORT_MIN} multicast-port-max=${PORT_MAX} multicast-ttl=${TTL} \
v4l2src device=/dev/video0 ! "video/x-raw,width=640,height=480" ! queue ! videoconvert ! \
queue ! x264enc key-int-max=10 ! h264parse ! capsfilter caps="video/x-h264, mapping=${MAPPING}" ! sink. \
audiotestsrc ! queue ! audioconvert ! queue ! voaacenc ! aacparse ! capsfilter caps="audio/mpeg, mapping=${MAPPING}" ! sink.
RTSP Clients
VLC
IP_ADDRESS=<IP ADDRESS OF HOST>
PORT=12345
MAPPING=stream
vlc rtsp://${IP_ADDRESS}:${PORT}/${MAPPING}
GStreamer
IP_ADDRESS=<IP ADDRESS OF HOST>
PORT=12345
MAPPING=stream
gst-launch-1.0 rtspsrc location=rtsp://${IP_ADDRESS}:${PORT}/${MAPPING} name=src \
src. ! rtph264depay ! h264parse ! avdec_h264 ! queue ! autovideosink \
src. ! rtpmp4adepay ! aacparse ! avdec_aac ! queue ! autoaudiosink
MPlayer
IP_ADDRESS=<IP ADDRESS OF HOST>
PORT=12345
MAPPING=stream
mplayer rtsp://${IP_ADDRESS}:${PORT}/${MAPPING}
Totem
IP_ADDRESS=<IP ADDRESS OF HOST>
PORT=12345
MAPPING=stream
totem rtsp://${IP_ADDRESS}:${PORT}/${MAPPING}
Summary
Use multicast audio and video when many receivers need the same synchronized presentation on a multicast-capable LAN.
Problems running the pipelines shown on this page? Please see our GStreamer Debugging guide for help.
Related pages
* GstRtspSink
- GstRtspSink - Basic usage
- GstRtspSink - Simple Examples
- GstRtspSink - Advanced examples
- GStreamer Debugging