streamdesktop

   1 #!/bin/bash
   2
   3 set -e
   4
   5 if [ "$BASH_VERSION" = "" ];then
   6   echo "This sctipt must be run with Bash, try 'bash $0'";
   7   exit 1
   8 fi
   9
  10 #    Copyright (C) 2020  Ruben Rodriguez <ruben@gnu.org>
  11 #
  12 #    This program is free software; you can redistribute it and/or modify
  13 #    it under the terms of the GNU General Public License as published by
  14 #    the Free Software Foundation; either version 2 of the License, or
  15 #    (at your option) any later version.
  16 #
  17 #    This program is distributed in the hope that it will be useful,
  18 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 #    GNU General Public License for more details.
  21 #
  22 #    You should have received a copy of the GNU General Public License
  23 #    along with this program; if not, write to the Free Software
  24 #    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  25
  26 # A simple script to capture your desktop and microphone into a file and an icecast2 streaming server
  27
  28 # Streamer side dependencies: wmctrl gstreamer1.0-tools gstreamer1.0-plugins-good gstreamer1.0-pulseaudio pulseaudio ffmpeg
  29 # sudo apt-get install wmctrl gstreamer1.0-tools gstreamer1.0-plugins-good gstreamer1.0-pulseaudio pulseaudio ffmpeg
  30
  31 # Server side dependencies: icecast2
  32
  33 # Server connection settings
  34 SERVER=my.icecast2server.org
  35 PORT=80 # port to stream to
  36 PASSWORD=hackme
  37
  38 # Stream settings
  39 BITRATE=1000000 # Bitrate of the video, in bps
  40 SOUNDQUALITY=0.4 # OGG compression quality, from 0 to 1
  41 FRAMERATE=20 # frames per second
  42 SHOWPOINTER="true" # show or hide the mouse pointer
  43 # Width and height are upper limits. Video will not be upscaled or stretched, it would be proportionally downscaled to fit the WIDTH and HEIGHT dimensions
  44 WIDTH=1280
  45 HEIGHT=720
  46
  47 DATE=$(date +%Y-%m-%d-%H_%M_%S)
  48 MOUNT=$1
  49 [ "$MOUNT" = "" ] && MOUNT=recording
  50
  51 cat << EOF
  52 Usage: $0 [title]
  53 The title parameter will be used for the name of the mount, and the name of the file saved:
  54   http://$SERVER/$MOUNT.webm
  55   File saved locally to ./$MOUNT-${DATE}.webm
  56   Log saved to $MOUNT-${DATE}.log
  57
  58 AUDIO INPUT: this script will record and stream the audio from the default input selection in Pulseaudio. Click on the volume icon in your desktop environment, go to settings, then input, and select the appropriate device and input level.
  59
  60 SCREEN SELECTION. Note: broadcasting a single window may crash if you minimize or resize the screen after the streaming starts! If you have issues with this, select 0 to broadcast the full screen, but remember to close or hide any privacy-sensitive windows." If the stream is just an empty black square, make sure your desktop is running X11, not Wayland or others.
  61
  62 0: Capture FULL SCREEN
  63 EOF
  64
  65 # Window selector
  66 WINDOWLIST="$(wmctrl -l)"
  67 i=1
  68 echo "$WINDOWLIST" |while read line
  69 do
  70   echo -n "$i: "
  71   name=$(echo $line| cut -d' ' -f 4-)
  72   echo $name
  73   i=$(expr $i + 1)
  74 done
  75
  76 echo
  77 echo "Select the window to capture, or press enter to capture the whole screen"
  78 read -s -n1 SELECTION
  79
  80 XID=$(echo "$WINDOWLIST" | sed -n "${SELECTION}p" | sed 's/ .*//')
  81
  82 if [ "$SELECTION" = 0 ] || [ "$SELECTION" = "" ] ; then
  83   XPARAM=""
  84 else
  85   XPARAM="xid=$XID"
  86 fi
  87
  88
  89 # The video needs to be processed after recording
  90 trap ctrl_c INT
  91 ctrl_c() {
  92   echo
  93   echo -n "Remuxing streamed video... "
  94   mv $MOUNT-${DATE}.webm $MOUNT-${DATE}.webm.bak
  95   ffmpeg -i $MOUNT-${DATE}.webm.bak -acodec copy -vcodec copy $MOUNT-${DATE}.webm >> $MOUNT-${DATE}.log 2>&1
  96   echo done.
  97   echo
  98   echo Use $MOUNT-${DATE}.webm for publishing, you can delete $MOUNT-${DATE}.webm.bak
  99   echo
 100   echo "You can trim the beginning and end of the video with this command (replace the timestamps, HH:MM:SS):"
 101   echo   ffmpeg -i $MOUNT-${DATE}.webm -acodec copy -vcodec copy -ss 00:19:27 -to 02:18:51 trimmed.webm
 102 }
 103
 104
 105 echo STARTING STREAM in 2 seconds. Press CTRL+C to end the session.
 106 sleep 2
 107 echo Streaming at http://$SERVER/recording.webm
 108 echo
 109
 110 # GSTREAMER 1.0 pipeline for capture, save to file, and stream to icecast2
 111 gst-launch-1.0 --eos-on-shutdown ximagesrc use-damage=false $XPARAM show-pointer=$SHOWPOINTER \
 112 ! videorate ! video/x-raw,framerate=$FRAMERATE/1 \
 113 ! videoscale ! video/x-raw, width=$WIDTH, height=$HEIGHT \
 114 ! videoconvert ! queue !  vp8enc target_bitrate=$BITRATE cpu-used=0 deadline=1 threads=4 keyframe-max-dist=15 ! queue ! mux. \
 115 pulsesrc ! vorbisenc  quality=$SOUNDQUALITY ! queue ! mux. \
 116 webmmux streamable=true name=mux ! tee name=stream ! queue ! filesink location=$MOUNT-${DATE}.webm sync=false \
 117 stream. ! queue max-size-time=0 max-size-bytes=135528448 max-size-buffers=0 ! shout2send ip=$SERVER port=$PORT mount=$MOUNT.webm password=$PASSWORD sync=false \
 118 2>&1 | tee $MOUNT-${DATE}.log
 119
 120