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--- robot-implementation:video-streaming [2017/05/03 16:28]
avnerus created
+++ robot-implementation:video-streaming [2019/02/25 13:20]
avnerus removed
@@ Line 2: / Line 2: @@
 Currently testing the following stream to local Janus:
+===== VP8 =====
+This command runs vp8 encoding with some cpu optimization:
+<code>
+gst-launch-1.0 pulsesrc ! queue ! opusenc ! rtpopuspay ! udpsink host=127.0.0.1 port=8003 rpicamsrc
+preview=false ! videoconvert ! video/x-raw, framerate=30/1, width=640, height=480 ! vp8enc cpu-used=5
+threads=3 deadline=1 ! rtpvp8pay ! udpsink host=127.0.0.1 port=8004 sync=false
+</code>
+With these Janus settings
+<code>
+[vp8-rpi]
+type = rtp
+id = 10
+description = VP8 live stream coming from gstreamer on Raspberry Pi
+audio = yes
+video = yes
+videoport = 8004
+audioport = 8003
+audiopt = 111
+audiortpmap = opus/48000/2
+videopt = 100
+videortpmap = VP8/90000
+</code>
+===== H264 =====
+H264 Encoding is not supported well on Chrome.
 <code>
@@ Line 8: / Line 35: @@
 udpsink host=127.0.0.1 port=8004
 </code>
+This one is nice
+<code>
+gst-launch-1.0 rpicamsrc preview=false vflip=true ! x264enc tune=zerolatency speed-preset=ultrafast
+qp-min=18  pass=5 quantizer=21 ! video/x-h264,width=640,height=480,framerate=30/1 ! rtph264pay ! udpsink
+host=127.0.0.1 port=8004 sync=false
+</code>
+And with synced audio:
+<code>
+gst-launch-1.0 pulsesrc ! queue ! opusenc ! rtpopuspay ! udpsink host=127.0.0.1 port=8003 rpicamsrc
+preview=false vflip=true ! x264enc tune=zerolatency speed-preset=ultrafast qp-min=18 pass=5 quantizer=21 !
+video/x-h264,width=640,height=480,framerate=30/1 ! rtph264pay ! udpsink host=127.0.0.1 port=8004 sync=false
+</code>
+Lower the CPU Usage
+<code>
+gst-launch-1.0 pulsesrc ! queue ! opusenc ! rtpopuspay ! udpsink host=127.0.0.1 port=8003 rpicamsrc
+preview=false ! x264enc tune=fastdecode speed-preset=1 pass=5 quantizer=30 ! video/x-
+h264,width=640,height=480,framerate=30/1 ! rtph264pay ! udpsink host=127.0.0.1 port=8004 sync=false
+</code>
+Using JANUS Gateway's streaming plugin configured as such:
+<code>
+[h264-sample]
+type = rtp
+id = 10
+description = H.264 live stream coming from gstreamer
+audio = yes
+video = yes
+videoport = 8004
+audioport = 8003
+audiopt = 111
+audiortpmap = opus/48000/2
+videopt = 126
+videortpmap = H264/90000
+videofmtp = profile-level-id=42e01f\;packetization-mode=1
+</code>
+===== Pulse Audio =====
+Auto start pulse audio on Raspbian - **/etc/systemd/system/pulseaudio.service**
+<code>
+[Unit]
+Description=PulseAudio system server
+[Service]
+Type=simple
+ExecStart=/usr/bin/pulseaudio --system --realtime --log-target=journal
+[Install]
+WantedBy=multi-user.target
+</code>
+**Sources**
+  * [[https://groups.google.com/forum/#!topic/meetecho-janus/k2_oz0Kptdw]]
+  * [[https://groups.google.com/forum/#!topic/meetecho-janus/KyEuS9I9B50]]
+  * [[https://www.rs-online.com/designspark/building-a-raspberry-pi-2-webrtc-camera]]
+  * [[https://raspberrypi.stackexchange.com/questions/26675/modern-way-to-stream-h-264-from-the-raspberry-cam]]

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