From baef85054cf1360ebe83cbeb8a181a90461c2167 Mon Sep 17 00:00:00 2001
From: Steven Wu <7689359+stev3nw@users.noreply.github.com>
Date: Mon, 29 Jun 2026 11:19:34 +0800
Subject: [PATCH] fix(homekit): force tcp rtsp_transport for two-way audio
 talkback (#2081)

The two-way audio talkback loopback (RtspServer over listenZeroSingleClient)
only supports TCP interleaved transport. The talkback ffmpeg input was built
without -rtsp_transport, so ffmpeg attempts a UDP SETUP first and the loopback
responds 461 Unsupported Transport.

The equivalent webrtc talkback path (plugins/webrtc/src/session-control.ts)
has always specified -rtsp_transport tcp; the homekit path did not. Align it.

Before: talkback was silent and the log showed "method SETUP failed: 461
Unsupported Transport". After: the 461 is gone and talkback audio works.
---
 plugins/homekit/src/types/camera/camera-streaming.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/plugins/homekit/src/types/camera/camera-streaming.ts b/plugins/homekit/src/types/camera/camera-streaming.ts
index 5e2708262..9fed5c8b0 100644
--- a/plugins/homekit/src/types/camera/camera-streaming.ts
+++ b/plugins/homekit/src/types/camera/camera-streaming.ts
@@ -378,6 +378,7 @@ export function createCameraStreamingDelegate(device: ScryptedDevice & VideoCame
                             url: rtspUrl,
                             // this may not work if homekit is using aac to deliver audio, since 
                             inputArguments: [
+                                '-rtsp_transport', 'tcp',
                                 "-acodec", isOpus ? "libopus" : "libfdk_aac",
                                 '-i', rtspUrl,
                             ],