nixos-config/nixos/modules/programs/video.nix

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{ config, pkgs, lib, ... }:
with lib;
let
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# Lassulus streaming setup
# -------------------------
# ffmpeg \
# -f pulse \
# -i default \
# -vaapi_device /dev/dri/renderD128 \
# -f x11grab \
# -video_size 1366x768 \
# -i :0 \
# -vf 'hwupload,scale_vaapi=format=nv12' \
# -c:v h264_vaapi \
# -c:a aac \
# -b:a 96k \
# -af "highpass=f=200, lowpass=f=3000" \
# -qp 30 \
# -f flv \
# rtmp://lassul.us:1935/stream/nixos \
# ./rc3-output-$(date +%d%H%M%S).mp4
#
# Dann abspielen mit :
# mpv rtmp://lassul.us:1935/stream/nixos
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cfg = config.programs.custom.video;
# show keyboard input on desktop for screencasts
screenKey = pkgs.symlinkJoin {
name = "screen-keys";
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paths =
let
screenKeyScript = { position ? "bottom", size ? "small", ... }:
pkgs.writeShellScriptBin "screenkeys-${position}-${size}" # sh
''
${pkgs.screenkey}/bin/screenkey \
--no-detach \
--bg-color '#fdf6e3' \
--font-color '#073642' \
-p ${position} \
-s ${size} \
"$@"
'';
in
lib.flatten (lib.flip map [ "large" "small" "medium" ] (size:
lib.flip map [ "top" "center" "bottom" ]
(position: screenKeyScript { inherit size position; })));
};
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mpvReview =
let
moveToDir = key: dir: pkgs.writeText "move-with-${key}.lua" ''
tmp_dir = "${dir}"
function move_current_track_${key}()
track = mp.get_property("path")
os.execute("mkdir -p '" .. tmp_dir .. "'")
os.execute("mv '" .. track .. "' '" .. tmp_dir .. "'")
print("moved '" .. track .. "' to " .. tmp_dir)
end
mp.add_key_binding("${key}", "move_current_track_${key}", move_current_track_${key})
'';
delete = moveToDir "D" "./.graveyard";
good = moveToDir "G" "./.good";
in
pkgs.writers.writeDashBin "mpv-review" ''
exec ${pkgs.mpv}/bin/mpv --no-config --script=${delete} --script=${good} "$@"
'';
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in
{
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options.programs.custom.video.enable = mkEnableOption "enable video tools";
config = mkIf cfg.enable {
environment.systemPackages = with pkgs; [
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unstable.youtube-dl
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unstable.yt-dlp
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mplayer
mpv
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mpvReview
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# to record your screen
# ---------------------
simplescreenrecorder
screenKey
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# to transcode video material
# ---------------------------
handbrake
ffmpeg-full
# video editing
# -------------
openshot-qt
];
};
}