# ffs = ffmpeg stream
-# todo: learn to start working in one corner of the screen.
-
-# potential improvement: it might be nice that we could have a tall terminal bug only use
+# potential improvement: it might be nice that we could have a tall terminal but only use
# the top half for a 1080p stream, this is how:
# https://superuser.com/questions/1106674/how-to-add-blank-lines-above-the-bottom-in-terminal
-#
if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
usage() {
cat <<EOF
-Usage: ${0##*/} [OPTIONS] [sysops|tech|staff]
-3 mountpoints: fsf-sysops (default, public), fsf (all staff), fsf-tech (tech team)
+Usage: ${0##*/} [OPTIONS] [sysops|tech|staff|test]
+
+arg is icecast mountpoint suffix, except staff removes suffix.
-d debug.
--f Stream full screen even high resolution.
--t Stream tall half screen
+-r RESOLUTION_TYPE
+ full: full screen even high resolution.
+ tall (default): half screen.
+ quarter: self evident
+-l loud/listen. Start unmuted. Usually for testing.
-u Undelayed. Removes 5 second video delay, and about 4 second audio delay.
-w do not launch watch of stream
delay=true
loglevel=fatal
watch=true
+volume=0
fullscreen=false
-tall=false
-temp=$(getopt -l help hdftuw "$@") || usage 1
+tall=true
+temp=$(getopt -l help hdlr:uw "$@") || usage 1
eval set -- "$temp"
while true; do
case $1 in
loglevel=info
ffp_args+=(-d)
;;
- -f)
- fullscreen=true
- tall=false
+ -l)
+ volume=1
;;
- -t)
- fullscreen=false
- tall=true
+ -r)
+ case $2 in
+ tall)
+ fullscreen=false
+ tall=true
+ ;;
+ quarter)
+ fullscreen=false
+ tall=false
+ ;;
+ full)
+ fullscreen=true
+ tall=false
+ ;;
+ esac
+ shift
;;
-w)
watch=false
done
mount_suffix=-sysops
-case $1 in
- sysops|tech)
- mount_suffix=-$1
- ;;&
- tech)
- delay=false
- ;;
- staff)
- mount_suffix=
- ;;
-esac
+if [[ $1 ]]; then
+ case $1 in
+ sysops|tech)
+ mount_suffix=-$1
+ ;;&
+ tech)
+ delay=false
+ ;;
+ staff)
+ mount_suffix=
+ ;;
+ *)
+ echo "error: unexpected \$1: $1" >&2
+ exit 1
+ ;;
+ esac
+ ffp_args+=($1)
+fi
if $delay; then
# 2500 gets us around a 4 second delay, up from 1.5s.
##### end command line parsing ########
-host=live.iankelling.org:8000
-if ip n show 10.2.0.1 | grep . &>/dev/null && \
- [[ $(dig +timeout=1 +short @10.2.0.1 -x 10.2.0.2 2>&1 ||:) == kd.b8.nz. ]]; then
+host=live.iankelling.org:8443
+live_host=$(dig +timeout=1 +short @iankelling.org live.iankelling.org)
+vps_host=$(dig +timeout=1 +short iankelling.org)
+if [[ $live_host != "$vps_host" ]] && ip n show 10.2.0.1 | grep . &>/dev/null && \
+ [[ $(dig +timeout=1 +short @10.2.0.1 -x 10.2.0.2 2>&1 ||:) == kd.b8.nz. ]]; then
host=127.0.0.1:8000
+ if ! pgrep '^icecast2$' >/dev/null; then
+ sudo systemctl start icecast2
+ fi
+else
+ find_prefix="ssh live.iankelling.org"
+fi
+
+if $find_prefix find /var/icecast -type f | grep .; then
+ echo "warning: suggest clearing /var/icecast with icrmr or moving files. sleeping for 4 seconds"
+ sleep 4
fi
+
pass=$(sed -n 's/ *<source-password>\([^<]*\).*/\1/p' /p/c/icecast.xml)
stream_res=$primary_res
fi
-framerate=8
+stream_x=${stream_res%x*}
+stream_y=${stream_res#*x}
+
+# leave out our i3 window borders
+stream_res=$(( stream_x - 4 ))x$(( stream_y - 4))
+
+
+# if hardware acceleration exists, use it to save power & cpu.
+if vainfo |& grep -i VAProfileVP9Profile &>/dev/null; then
+ # 1500 seems almost flawless
+ bitrate_1080=1500
+
+ encode_settings=(
+ -c:v vp9_vaapi
+ # these options increase compression based on random internet reference.
+ -bsf:v vp9_raw_reorder,vp9_superframe
+ )
+ # https://trac.ffmpeg.org/wiki/Hardware/VAAPI
+ global_extra_args=(
+ -vaapi_device /dev/dri/renderD128
+ )
+ extra_filter_arg=",format=nv12|vaapi,hwupload"
+else
+ # 1000 is a bit blury, 1500 is pretty clear, 2000 makes scrolling
+ # adjust much faster, 2500 has marginal improvement on that.
+ #
+ # note https://livekit.io/webrtc/bitrate-guide (our framerate is lower)
+ bitrate_1080=2000
+
+ encode_settings=(
+ -vcodec libvpx
+ -quality realtime
+ -error-resilient 1
+ )
+fi
+
+bitrate=$(( ( stream_x * stream_y ) / ( (1920*1080) / bitrate_1080 ) ))
+
+
+# 8 seems fine. be conservative by going a bit higher.
+framerate=10
keyframe_interval=$((framerate * 2))
# Monitor of default sink.
-hide_banner
-nostats
+ ${global_extra_args[@]}
+
# tested for decreasing latency: did not help.
# -probesize 32
# tested for warning "Queue input is backward in time". did not help.
#
# man page say zmq url default includes "localhost", but specifying a
# localhost url caused an error for me.
- -filter_complex "[0]azmq,volume=precision=fixed: volume=0 [vol0];
+ -filter_complex "[0]azmq,volume=precision=fixed: volume=$volume [vol0];
[1]azmq='b=tcp\://127.0.0.1\:5556',volume=precision=fixed: volume=0 [vol1];
[vol0][vol1] amerge=inputs=2;
-[2]zmq='b=tcp\://127.0.0.1\:5557',drawbox=color=0x262626,drawtext=fontsize=90: fontcolor=beige: x=40: y=40: text=''${delay_arg}[out]"
-
-# [vol0][vol1] amerge=inputs=2,adelay=6000:all=1;
-
+[2]zmq='b=tcp\://127.0.0.1\:5557',drawbox=color=0x262626,drawtext=fontsize=90: fontcolor=beige: x=40: y=40: text=''${delay_arg}${extra_filter_arg}[out]"
# An online source says to match a 5 second vid delay, we can do an
# audio delay filter: "adelay=5000|5000". However, we already get
-map '[out]'
# video output options
- -vcodec libvpx
-g $keyframe_interval
- -quality realtime
- # for 1080p, default 256k is poor quality. 500 is ok. 1500 is a bit better.
- -b:v 1500k
- -threads 2
- -error-resilient 1
+ ${encode_settings[@]}
+ -b:v ${bitrate}k
+
## audio output options
-c:a libvorbis
rm -f /tmp/iank-ffmpeg-interlude-toggle
-# start muted
-pactl set-source-mute @DEFAULT_SOURCE@ true
+# system mute. disabled, just using application level mute atm.
+#
+# pactl set-source-mute @DEFAULT_SOURCE@ true
if pkill -f ^ffmpeg.\*icecast://source.\*/fsf; then
sleep 1
fi
-#echo executing: ffmpeg ${opts[@]}
+echo executing: ffmpeg ${opts[@]}
#{ sleep 1; ffp &>/dev/null & }
touch $HOME/.iank-stream-on
fi
-echo true >$HOME/.iank-stream-muted
+echo $volume >$HOME/.iank-stream-muted
ffmpeg "${opts[@]}" &
if $watch; then
rm -f $HOME/.iank-stream-on
fi
-
-
### begin background/development docs ###
# zmq vs stdin commands:
# ./configure --enable-libzmq --enable-libpulse --enable-libvorbis --enable-gpl --enable-version3
#
+# note: when playing back, text is going to look aliased unless you
+# watch it in a window that is exactly as bit or bigger than the
+# recording: tabbed i3 window shrinks things. or, use: mpv
+# --video-unscaled
+
### end background/development docs ###
iankelling.org / git / distro-setup / blobdiff