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--- piplus [2021/02/16 17:09] – 46.223.163.46
+++ piplus [2022/02/22 19:33] – old revision restored (2021/10/14 17:23) 135.181.212.177
@@ Line 1: / Line 1: @@
+wayvnc needs pi repo
+<code bash>
+pacman -S weston wayvnc signal-desktop dmenu xorg-xwayland
+WLR_BACKENDS=headless WLR_LIBINPUT_NO_DEVICES=1 sway
+wayvnc 0.0.0.0
+</code>
+open vnc port
+<code bash>
+wf-recorder --muxer=v4l2 --codec=rawvideo --pixel-format=yuv420p --file=/dev/video0
+wf-recorder --muxer=v4l2 -f /dev/video4 -c rawvideo -x yuyv422
+</code>
+<code bash>
+ffmpeg -loop 1 -i image.jpg -i audio.mp3 -shortest -c:v libx264 -c:a copy result.mkv
+ffmpeg -loop 1 -i image.jpg -i audio.mp3 -vf "drawtext=text='My text starting at 640x360':x=640:y=360:fontsize=24:fontcolor=white" -shortest -c:v libx264 -c:a copy result.mkv
+</code>
+<code bash>
+pacman -S linux-headers v4l2loopback-dkms wf-recorder
+modprobe v4l2loopback devices=1 max_buffers=2 exclusive_caps=1 card_label="VirtualCam"
+gpasswd -a onny video
+pactl load-module module-pipe-source source_name=virtmic file=/home/onny/virtmic format=s16le rate=16000 channels=1
+pactl set-default-source virtmic
+ffmpeg -re -i piplus/result.mkv -map 0:v -vf format=yuv420p -f v4l2 /dev/video0 -map 0:a -f s16le -ar 16000 -ac 1 - > virtmic
+</code>
+  * https://github.com/signalapp/Signal-Desktop/blob/6e7930f7a983ff9a61ada1bd8feb32c57132c7b1/components/recorderjs/recorderWorker.js
+  * ringRTC https://github.com/signalapp/Signal-Desktop/blob/a173a9b33ff8dccbe02b9ad2d5e268ca3b036563/ts/services/calling.ts
+  * webrtc https://github.com/signalapp/webrtc/pull/47
+  * https://github.com/signalapp/webrtc/search?q=CBR
+  * https://github.com/signalapp/webrtc/pull/42/commits/4fcfb70705e71dfb86a343b5e31e90e2c675ae2a
+  - build https://github.com/signalapp/ringrtc
+    - set max_bitrate_bps in https://github.com/signalapp/ringrtc/blob/653757074949f48ff1e4c1490550932cea3276ea/src/rust/src/webrtc/media.rs
+  - somehow put binary into https://github.com/signalapp/signal-ringrtc-node/commits/master/build/linux/libringrtc.node
+  - use custom signal-ringrtc-node in signal-desktop
+<code bash>
+git clone https://github.com/signalapp/ringrtc.git
+rustup toolchain install 1.49.0
+rustup default 1.49.0
+pacman -S depot-tools-git
+export PATH="/opt/depot_tools:$PATH"
+cd ringrtc
+make electron PLATFORM=unix
+</code>
+<file>
+diff --git a/src/rust/src/webrtc/media.rs b/src/rust/src/webrtc/media.rs
+index ee1f3e0..8e5eadb 100644
+--- a/src/rust/src/webrtc/media.rs
++++ b/src/rust/src/webrtc/media.rs
+@@ -483,10 +483,10 @@ impl Default for AudioEncoderConfig {
+         Self {
+             packet_size_ms: 20,
+-            bandwidth: AudioBandwidth::Auto,
++            bandwidth: AudioBandwidth::Wide,
+             start_bitrate_bps: 40000,
+-            min_bitrate_bps:   16000,
++            min_bitrate_bps:   40000,
+             max_bitrate_bps:   40000,
+             complexity:        9,
+             enable_cbr:        true,
+</file>
+<code>
+git clone https://github.com/signalapp/signal-ringrtc-node.git
+cd signal-ringrtc-node
+ln -s /home/onny/projects/ringrtc/src/node/build/linux/libringrtc.node build/linux/libringrtc.node
+</code>
+  * force high bitrate https://github.com/signalapp/ringrtc/blob/653757074949f48ff1e4c1490550932cea3276ea/src/rust/src/core/bandwidth_mode.rs#L84
+  * stereo avg bitrate https://github.com/signalapp/ringrtc/blob/653757074949f48ff1e4c1490550932cea3276ea/src/rffi/src/peer_connection.cc
+  * log: set max send bitrate to datarate, size_per_second, datasize, bits 1024
+===== new =====
+<code bash>
+sudo systemctl stop nftables
+nft flush ruleset
+export WLR_BACKENDS=headless
+export WLR_LIBINPUT_NO_DEVICES=1
+export WAYLAND_DISPLAY=wayland-1
+export XDG_RUNTIME_DIR=/tmp
+export XDG_SESSION_TYPE=wayland
+sway &
+wayvnc 0.0.0.0
+pacman -Q signal-desktop sway-git wlroots-git ffmpeg pulseaudio
+signal-desktop 5.19.0-1
+sway-git r6794.f4db502d-1
+wlroots-git 0.14.0.r293.gdc22a061-1
+</code>

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