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#!/bin/bash
xid=$(xwininfo -root -all|grep "Jitsi Meet" | sed -e 's/^ *//' | cut -d\ -f1)
[ 1${xid}1 != 11 ] && xidparameter="xid=$xid"
export GST_DEBUG=4
DATE=$(date +%Y-%m-%d-%H_%M_%S)
PASSWORD=xxx
# pactl list|grep alsa_output
device1="alsa_output.usb-Burr-Brown_from_TI_USB_Audio_CODEC-00-CODEC.analog-stereo.monitor"
device2="alsa_input.usb-Burr-Brown_from_TI_USB_Audio_CODEC-00-CODEC.analog-stereo"
gst-launch-1.0 --gst-debug-level=$1 --eos-on-shutdown ximagesrc use-damage=false $xidparameter show-pointer=false !\
videoconvert ! videorate ! video/x-raw,framerate=20/1 ! videoscale ! video/x-raw, width=1024, height=768 ! \
vp8enc min_quantizer=1 max_quantizer=10 cpu-used=10 deadline=41000 threads=2 ! queue ! mux. \
pulsesrc device=$device1 ! adder name=mix ! vorbisenc quality=0.4 ! queue ! mux. \
pulsesrc device=$device2 ! mix. \
webmmux streamable=true name=mux ! queue ! tee name=s ! queue ! filesink location=keynote-${DATE}.webm \
s. ! queue leaky=2 ! shout2send ip=live2.fsf.org port=80 mount=keynote.webm password=$PASSWORD sync=false 2>&1 |\
tee keynote-${DATE}.log
This instructions are for building OpenBroadcaster on Debian testing, plus ffmpeg as a dependency.
NOTE that for OBS to run it is necessary OpenGL 3.2 which is not available in Debian 8 Stable. Follow the install instructions after upgrading to Debian testing.
Install dependencies:
# apt-get install build-essential pkg-config cmake git checkinstall libx11-dev libgl1-mesa-dev \ libpulse-dev libxcomposite-dev libxinerama-dev libv4l-dev libudev-dev libfreetype6-dev \ libfontconfig-dev qtbase5-dev libqt5x11extras5-dev libx264-dev libxcb-xinerama0-dev \ libxcb-shm0-dev libjack-jackd2-dev libcurl4-openssl-dev zlib1g-dev yasm gstreamer-tools pavucontrol
Download and build ffmpeg:
$ git clone --depth 1 git://source.ffmpeg.org/ffmpeg.git $ cd ffmpeg $ ./configure --enable-shared --prefix=/usr $ make -j4 # checkinstall --pkgname=FFmpeg --fstrans=no --backup=no \ --pkgversion="$(date +%Y%m%d)-git" --deldoc=yes
Download and build obs:
$ git clone https://github.com/jp9000/obs-studio.git $ cd obs-studio $ mkdir build && cd build $ cmake -DUNIX_STRUCTURE=1 -DCMAKE_INSTALL_PREFIX=/usr .. $ make -j4 # checkinstall --pkgname=obs-studio --fstrans=no --backup=no \ --pkgversion="$(date +%Y%m%d)-git" --deldoc=yes
Install v4l loop:
# apt-get install v4l2loopback-dkms # echo v4l2loopback >> /etc/modules # modprobe v4l2loopback
Install local stream manager:
# apt-get install crtmpserver
Run obs, set streaming settings to:
Run streaming to v4l:
# modprobe snd-aloop # echo snd-aloop >> /etc/modules $ gst-launch-1.0 rtmpsrc location="rtmp://127.0.0.1/flvplayback/stream.flv live=1" ! decodebin name=decoded ! videorate !\ video/x-raw,framerate=25/1 ! queue leaky=1 ! v4l2sink device=/dev/video1 sync=false \ decoded. ! audioconvert ! queue leaky=1 ! pulsesink device=alsa_output.1.analog-stereo sync=false
Start Jitsi Meet session on Chromium (recommended browser, others may work).
Test streaming:
$ gst-launch-1.0 rtmpsrc location="rtmp://127.0.0.1/flvplayback/stream.flv live=1" ! decodebin ! xvimagesink sync=false
Test v4l device:
$ gst-launch-1.0 v4l2src device=/dev/video1 ! xvimagesink
The streaming feed is processed by ABYSS front-end. ABYSS (ABYSS Broadcast Your Stream Successfully) is written in Python, in version 0.1 it consist of a main module used for generating the GUI via GTK3, a module for creating and handling the pipeline using GStreamer-1.0 plugins, and a config file to set inputs/ouputs and server parameters.
Here is the main pipeline (using the Elphel camera) as it could be used in a bash command-line:
gst-launch-1.0 -e rtspsrc location=rtsp://192.168.48.2:554 ! queue ! rtpjpegdepay ! tee name=rawvideo ! queue ! jpegdec max-errors=-1 ! tee name=videodecoded ! queue ! xvimagesink sync=false ! \ rawvideo. ! queue ! filesink location=[rawvideo_defaultname] \ videodecoded. ! videoscale ! video/x-raw, width=640, height=360 ! vp8enc min_quantizer=1 max_quantizer=13 cpu-used=5 deadline=42000 threads=2 sharpness=7 ! queue ! webmmux name=mux2 \ pulsesrc device=[input_source_name]! level interval=200000000 ! queue ! vorbisenc quality=0.3 ! tee name=rawaudio \ rawaudio. ! queue ! oggmux ! tee name=streamaudio ! queue ! filesink location=[audio_defaultname] \ streamaudio. ! queue leaky=2! shout2send ip=server.domain.name port=80 mount=testaudio.ogg password=[server_password] \ rawaudio. ! queue ! mux2. \ mux2. ! tee name=streamfull ! queue ! filesink location=[stream_defaultname] \ streamfull. ! queue leaky=2! shout2send ip=server.domain.name port=80 mount=teststream.webm password=[server_password]
Here is the backup pipeline in case of Elphel failure, the input is based on USB webcam:
gst-launch-1.0 -e v4l2src device=/dev/video[0-9]* ! video/x-raw, width=640, height=360 ! tee name=rawvideo ! queue ! xvimagesink sync=false ! \ rawvideo. ! queue ! mkvmux ! filesink location=[rawvideo_defaultname] \ rawvideo. ! vp8enc min_quantizer=1 max_quantizer=13 cpu-used=5 deadline=42000 threads=2 sharpness=7 ! queue ! webmmux name=mux2 \ pulsesrc device=[input_source_name]! level interval=200000000 ! queue ! vorbisenc quality=0.3 ! tee name=rawaudio \ rawaudio. ! queue ! oggmux ! tee name=streamaudio ! queue ! filesink location=[audio_defaultname] \ streamaudio. ! queue leaky=2! shout2send ip=server.domain.name port=80 mount=testaudio.ogg password=[server_password] \ rawaudio. ! queue ! mux2. \ mux2. ! tee name=streamfull ! queue ! filesink location=[stream_defaultname] \ streamfull. ! queue leaky=2! shout2send ip=server.domain.name port=80 mount=teststream.webm password=[server_password]
Here is the test pipeline to check the Elphel framing/focusing and audio inputs:
gst-launch-1.0 -e rtspsrc location=rtsp://192.168.48.2:554 ! queue ! rtpjpegdepay ! jpegdec max-errors=-1 ! queue ! xvimagesink sync=false ! \ pulsesrc device=[input_source_name]! level interval=200000000 ! queue ! pulsesink device=[output_source_name] sync=false
# ifcongif eth1:0 192.168.48.50
NOTE Command-line use on a X200 laptop with an Elphel address of 192.168.48.2
Should be solved in next version of ABYSS.
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