jack_control start
jack_control ds alsa
jack_control dps device hw:HD2
jack_control dps rate 48000
jack_control dps nperiods 2
jack_control dps period 64
sleep 10
a2jmidid -e &
sleep 10
qjackctl &

fluidsynth increase gain:
--gain 3

ne ponasa se bas pouzadano, nekad odmah radi nekad ne radi!? npr kod odabira outputa ne čuje se zvuk iz zvučnika, čak se ne može playat nikakav sadržaj koji ima zvuk.

za setupiranje detalja treba pokrenuti:
pavucontrol

disable pulseaudio's bluetooth in gdm:

nano /var/lib/gdm3/.config/pulse/default.pa

!/usr/bin/pulseaudio -nF

#

load system wide configuration

.include /etc/pulse/default.pa

unload driver modules for Bluetooth hardware

.ifexists module-bluetooth-policy.so
unload-module module-bluetooth-policy
.endif

.ifexists module-bluetooth-discover.so
unload-module module-bluetooth-discover
.endif

strip one audio stream without recompression:
ffmpeg -i INPUT -map 0:v -map 0:a:2 -c copy OUTPUT

ffmpeg -i input.wav -c:a libfaac output.mp4
ffmpeg -i input.avi -c:v libx264 -c:a libfaac output.mkv

without re-encoding:
ffmpeg -i input.mp4 -c:v copy -c:a copy output.mkv

setting bitrate:
ffmpeg -i input.wav -b:a 192K out.mp3
ffmpeg -i input.avi -c:v libx264 -b:v 500K -c:a copy out.mp4

quality settings (better than with bitrate)
ffmpeg -i source.mp4 -c:v libx264 -crf 23 out.mp4

cutting video:
ffmpeg -i input.mov -ss 00:01:30 -c:v copy -c:a copy -t 00:01:30.500 output.mov

resizing:
ffmpeg -i hd-movie.mkv -c:v libx264 -s:v 854x480 -c:a copy out.mp4

internal analogue comparator
learning