1 files changed, 44 insertions, 0 deletions
diff --git a/nix/dash.nix b/nix/dash.nix
new file mode 100644
index 0000000..c0af4d7
--- /dev/null
+++ b/nix/dash.nix
@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.services.brook;
+in
+{
+  options.services.brook.dash = {
+    enable = mkEnableOption "ffmpeg dash server";
+
+    name = mkOption {
+      type = types.str;
+      description = ''
+        The name of the rtmp endpoint of the stream.  This might show up as
+        metadata in some clients
+      '';
+    };
+  };
+
+  config = mkIf cfg.dash.enable {
+    systemd.services.brook-ffmpeg = {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" ];
+      
+      serviceConfig = {
+        StateDirectory = "dash";
+        Group = "nginx";
+      };
+      
+      script = let
+        ffmpeg = "${pkgs.ffmpeg}/bin/ffmpeg";
+      in
+        ''
+          ${ffmpeg}-listen 1 -i rtmp://0.0.0.0:1935/${cfg.dash.name}/live \
+            -c:v libx264 -x264opts "keyint=24:min-keyint=24:no-scenecut" -r 24 \
+            -c:a aac -b:a 128k \
+            -bf 1 -b_strategy 0 -sc_threshold 0 -pix_fmt yuv420p \
+            -map 0:v:0 -map 0:a:0 -map 0:v:0 \
+            -map 0:a:0 -map 0:v:0 -map 0:a:0 \
+            /var/lib/dash/live.mpd
+        '';
+    };
+  };
+}