From 717bd1c02ce2e724aa2159b0fd14f4eba2fd1317 Mon Sep 17 00:00:00 2001
From: fkwp <github-fkwp@w4ve.de>
Date: Wed, 18 Jun 2025 20:32:57 +0200
Subject: [PATCH] add h264 specific presets and use them as simlucast layers

---
 src/livekit/options.ts | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/livekit/options.ts b/src/livekit/options.ts
index 8210f8a8..539a6471 100644
--- a/src/livekit/options.ts
+++ b/src/livekit/options.ts
@@ -11,10 +11,17 @@ import {
   type RoomOptions,
   ScreenSharePresets,
   type TrackPublishDefaults,
-  type VideoPreset,
+  VideoPreset,
   VideoPresets,
 } from "livekit-client";
 
+const VideoPresetsH264 = {
+  h144: new VideoPreset(256, 144, 120_000, 20),
+  h176: new VideoPreset(320, 176, 160_000, 20),
+  h288: new VideoPreset(512, 288, 180_000, 20),
+  h360: VideoPresets.h360,
+} as const;
+
 const defaultLiveKitPublishOptions: TrackPublishDefaults = {
   audioPreset: AudioPresets.music,
   dtx: true,
@@ -23,7 +30,10 @@ const defaultLiveKitPublishOptions: TrackPublishDefaults = {
   red: false,
   forceStereo: false,
   simulcast: true,
-  videoSimulcastLayers: [VideoPresets.h180, VideoPresets.h360] as VideoPreset[],
+  videoSimulcastLayers: [
+    VideoPresetsH264.h176,
+    VideoPresetsH264.h360,
+  ] as VideoPreset[],
   screenShareEncoding: ScreenSharePresets.h1080fps30.encoding,
   stopMicTrackOnMute: false,
   videoCodec: "h264",