From f50a4d91b4180d3b7232660c79766e09375f0913 Mon Sep 17 00:00:00 2001
From: Philip Giuliani <philip.giuliani@keepinmind.info>
Date: Mon, 22 Sep 2025 14:10:52 +0200
Subject: [PATCH] Add tx_id to fix compatibility with Livestream Studio 6 and
 some hardware encoders

---
 lib/membrane_rtmp_plugin/rtmp/message_handler.ex | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/membrane_rtmp_plugin/rtmp/message_handler.ex b/lib/membrane_rtmp_plugin/rtmp/message_handler.ex
index c0e447e..bb75e25 100644
--- a/lib/membrane_rtmp_plugin/rtmp/message_handler.ex
+++ b/lib/membrane_rtmp_plugin/rtmp/message_handler.ex
@@ -171,8 +171,8 @@ defmodule Membrane.RTMP.MessageHandler do
 
   # According to ffmpeg's documentation, this command should prepare the server to receive media streams
   # We are simply acknowledging the message
-  defp do_handle_client_message(%Messages.FCPublish{}, _header, state) do
-    %Messages.Anonymous{name: "onFCPublish", properties: []}
+  defp do_handle_client_message(%Messages.FCPublish{} = fc_publish, _header, state) do
+    %Messages.Anonymous{name: "onFCPublish", tx_id: fc_publish.tx_id, properties: []}
     |> send_rtmp_payload(state.socket, chunk_stream_id: 3)
 
     {:cont, state}