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