Reolink camera FLV video stream adapter.
Pi startup scripts are in /etc/xdg/lxsession/LXDE-pi/autostart
Remove unused daemons:
export LC_ALL=C
sudo apt remove -y cups cups-daemon modemmanager colord triggerhappy
sudo apt install -y firefox-esr xdotool
sudo apt autoremove -y
sudo systemctl disable packagekit.service
Setup startup scripts and configure X:
sudo perl -pi -e 's/#xserver-command=X/xserver-command=X -nocursor/' /etc/lightdm/lightdm.conf
if ! grep -q disable-bt /boot/config.txt ; then echo dtoverlay=disable-bt | sudo tee -a /boot/config.txt ; fi
sudo tee <<EOF /etc/xdg/lxsession/LXDE-pi/autostart
@xset s off
@xset -dpms
@xset -s noblank
@firefox-esr --kiosk --disable-pinch --remote-debugging-port=9222 http://kremvax:9999/html/index.html#office
EOF
00000000:
46 4c 56 FLV
01 version 1
00 flags == 0
00 00 00 09 header size = 9
00 00 00 00 previous packet == 0 bytes (first packet)
12 type == 0x12 == 18 == "AMF Metadata"
00 00 d0 uint24_t payload size
00 00 00 00 uint32_t timestamp
00 00 00 uint24_t stream id == 0
02 00 0a 6f 6e 4d 65 74 ...........onMet
00000020: 61 44 61 74 61 03 00 05 77 69 64 74 68 00 40 a4 aData...width.@.
00000030: 00 00 00 00 00 00 00 06 68 65 69 67 68 74 00 40 ........height.@
00000040: 9e 00 00 00 00 00 00 00 0c 64 69 73 70 6c 61 79 .........display
00000050: 57 69 64 74 68 00 40 a4 00 00 00 00 00 00 00 0d Width.@.........
00000060: 64 69 73 70 6c 61 79 48 65 69 67 68 74 00 40 9e displayHeight.@.
00000070: 00 00 00 00 00 00 00 08 64 75 72 61 74 69 6f 6e ........duration
00000080: 00 00 00 00 00 00 00 00 00 00 0c 76 69 64 65 6f ...........video
00000090: 63 6f 64 65 63 69 64 00 40 1c 00 00 00 00 00 00 codecid.@.......
000000a0: 00 0c 61 75 64 69 6f 63 6f 64 65 63 69 64 00 40 ..audiocodecid.@
000000b0: 24 00 00 00 00 00 00 00 0f 61 75 64 69 6f 73 61 $........audiosa
000000c0: 6d 70 6c 65 72 61 74 65 00 40 cf 40 00 00 00 00 mplerate.@.@....
000000d0: 00 00 09 66 72 61 6d 65 72 61 74 65 00 40 33 00 ...framerate.@3.
000000e0: 00 00 00 00 00 00 00 09 00 00 00 db 09 00 00 20 ...............
000000f0: 00 00 00 00 00 00 00 17 00 00 00 00 01 64 00 33 .............d.3
00000100: ff e1 00 0c 67 64 00 33 ac 15 14 a0 28 00 f1 90 ....gd.3....(...
00000110: 01 00 04 68 ee 3c b0 00 00 00 2b 09 05 32 80 00 ...h.<....+..2..
00000120: 00 00 00 00 00 00 17 01 00 00 00 00 05 32 77 65 .............2we
00000130: 88 80 01 00 00 27 f6 fd 4a 4e 6c a0 bb 63 ca 1a .....'..JNl..c..
To stream via nginx via HLS, which unfortunately adds 30 seconds of latency:
ffmpeg -i 'https://10.1.0.175/flv?port=1935&app=bcs&stream=channel0_main.bcs&user=user&password=viewer' -c:a copy -c:v h264 -vf scale=800x480 -f flv rtmp://localhost/live/frontdoor
To stream via FLV, which only supports one client and exits when the client exits:
backlight for HDMI connected displays:
ddcutil setvcp 10 0
backlight for DPI connected displays:
echo 0 | sudo tee /sys/class/backlight/something
using stable version 2023.11
this patch is required https://patchwork.ozlabs.org/project/buildroot/patch/20231025205233.1925727-1-kadir.c.yilmaz@gmail.com/
this is broken https://www.mail-archive.com/debian-qt-kde@lists.debian.org/msg107425.html the patch to add iterator fixes it ? https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1900409.html
reducing the number of parallel jobs prevents machine death
due to too many jumbo_X.cxx files being compiled simultaneously.
setup_signal_handlers isn't declared? https://wiki.linuxfromscratch.org/blfs/ticket/16377
qssl https://lists.buildroot.org/pipermail/buildroot/2022-February/637580.html
rolling back to longeterm 2023.02.8
almost aeverything works, except wekbit kiosk h -Fla !tps://lists.buildroot.org/pipermail/buildroot/2022-June/644924.html
must patch before building, otherwise it won't be re-applied