PulseAudio

PulseAudio CLI

pulseaudio --check
pulseaudio -k
pulseaudio -D

PulseAudio CLI
https://rastating.github.io/setting-default-audio-device-in-ubuntu-18-04/
https://wiki.archlinux.org/index.php/PulseAudio/Examples

pactl list short sinks
pactl list short sources

pactl set-sink-volume 35 17%

# restart
systemctl --user restart pulseaudio

Equalizer

# https://raw.githubusercontent.com/panticz/installit/master/install.pulseaudio-equalizer.sh

if [ "$(pulseaudio-equalizer status | grep "Equalizer status" | cut -d"[" -f2 | cut -d"]" -f1)" == "enabled" ]; then
    pulseaudio-equalizer disable
else
    pulseaudio-equalizer enable
fi
INPUT_INDEX=$(pacmd list-sink-inputs | grep index | cut -d":" -f2)

pactl load-module module-null-sink sink_name=steam
pactl move-sink-input ${INPUT_INDEX} steam

DEFAULT_OUTPUT=$(pacmd list-sinks | grep -A1 "* index" | grep -oP "<\K[^ >]+")
echo $DEFAULT_OUTPUT

pactl load-module module-combine-sink \
    sink_name=record-n-play slaves=$DEFAULT_OUTPUT \
    sink_properties=device.description="Record-and-Play"

parec --format=s16le -d record-n-play.monitor | \
    lame -r --quiet -q 3 --lowpass 17 --abr 192 - "temp.mp3" \
    > /dev/null &1>/dev/null

pacmd list-sinks | grep -A1 "* index" | grep -oP "<\K[^ >]+"

Switch audio output with CLI

pactl list short sinks
pacmd set-default-sink 6
pacmd set-default-sink alsa_output.pci-0000_00_03.0.hdmi-stereo

# get default
LANG=en pactl info | sed -En 's/Default Sink: (.*)/\1/p'
pacmd list-sinks | grep -e 'name:' -e index | paste - -

Switch to next output sink

jitsi

Install
https://desktop.jitsi.org/Main/DebianRepository.html

wget -qO - https://download.jitsi.org/jitsi-key.gpg.key | sudo apt-key add -
sudo sh -c "echo 'deb https://download.jitsi.org stable/' > /etc/apt/sources.list.d/jitsi-stable.list"
sudo apt-get -y update
sudo apt-get -y install jitsi

YouTube download and convert to mp3

https://yt-dl.org/update
https://github.com/ytdl-org/youtube-dl/releases

Installation
https://github.com/ytdl-org/youtube-dl#installation

wget -q https://yt-dl.org/downloads/latest/youtube-dl -O ~/.local/bin/youtube-dl
sudo chmod a+x ~/.local/bin/youtube-dl
# download audio (mp3) only
youtube-dl --extract-audio --audio-format mp3 -o "%(uploader)s/%(title)s.%(ext)s" https://www.youtube.com/watch?v=XXX

# download whole channel starting from 3 months
youtube-dl --extract-audio --audio-format mp3 -o "%(uploader)s/%(upload_date)s_%(title)s.%(ext)s" --dateafter now-3months -v https://www.youtube.com/user/OpenStackFoundation/videos

# update
sudo youtube-dl -U

# output template
https://github.com/ytdl-org/youtube-dl/blob/master/README.md#output-template

Flash LibreELEC to S905X

Latest version
http://kszaq.libreelec.tv/s905/

wget http://kszaq.libreelec.tv/s905/8.2/8.2.3.1/LibreELEC-S905.arm-8.2-8.2.3.1.img.gz -P /tmp/
gzip -d /tmp/LibreELEC-S905.arm-8.2-8.2.3.1.img.gz -C /tmp
dd if=/tmp//tmp/LibreELEC.USB-SD.Creator.Linux-64bit.bin of=/dev/mmcblk0
1. remove power connector from the box
2. insert sd card to to the box
3. press button inside aux connector and connect power to the box
4. enable ssh service on the box
5. ssh root@your_box_ip (pass: libreelec)
6. installtointernal

Links
https://blog.sengotta.net/libreelec-auf-nexbox-a95x-installieren/
https://kszaq.libreelec.tv/s905/
https://coreelec.org/

Install audio-recorder 

sudo add-apt-repository -y ppa:audio-recorder/ppa
sudo apt-get update
sudo apt-get install -y audio-recorder

start if sound  0.25
stop if silence 3s 0.25

Docu
/usr/share/audio-recorder/timer-syntax.html

Yamaha RX-V3800 / RX-V3900 AV-Receiver

WebGUI for Yamaha RX-V3900
http://dl.panticz.de/wlyc/wlyc3900.html
https://github.com/panticz/wlyc/blob/master/wlyc3900.html

Install and configure DLNA server for Yamaha RX-V3800

# install MiniDLNA
http://www.panticz.de/Install-MiniDLNA

# configure MiniDLNA for Yamaha PC/MCX player
sed -i 's|#notify_interval=895|notify_interval=86400|g' /etc/minidlna.conf

lyc
http://www.panticz.de/lyc

wlyc
http://www.panticz.de/wlyc

RX-D485 / RX-V485
http://www.panticz.de/yamaha/rx-d485

Spotify Connect with Spotify Free Account
https://de.yamaha.com/de/products/contents/audio_visual/musiccast/update_models.html

multimedia