Use source codec for encoded RTP passthrough

src/pipeline/pipeline_runtime.cpp

@@ -735,15 +735,6 @@ int run_pipeline(const RuntimeConfig &config) {
 		return exit_code(PipelineExitCode::SubscriberError);
 	}
 
-	if (config.outputs.rtp.enabled) {
-		auto created = protocol::UdpRtpPublisher::create(config);
-		if (!created) {
-			spdlog::error("pipeline RTP publisher init failed: {}", created.error());
-			return exit_code(PipelineExitCode::InitializationError);
-		}
-		rtp_publisher.emplace(std::move(*created));
-	}
-
 	PipelineStats stats{};
 	metrics::IngestEmitLatencyTracker latency_tracker{};
 	bool producer_offline{false};
@@ -775,6 +766,7 @@ int run_pipeline(const RuntimeConfig &config) {
 		warned_unknown_depth_unit = false;
 		using_encoded_input = false;
 		active_stream_info.reset();
+		rtp_publisher.reset();
 		rtmp_output.reset();
 	};
 
@@ -792,7 +784,17 @@ int run_pipeline(const RuntimeConfig &config) {
 
 	const auto start_outputs_from_stream_info =
 		[&](const encode::EncodedStreamInfo &stream_info, const ipc::FrameInfo &target_info) -> Status {
+		rtp_publisher.reset();
 		rtmp_output.reset();
+		if (config.outputs.rtp.enabled) {
+			auto created = protocol::UdpRtpPublisher::create(config, stream_info.codec);
+			if (!created) {
+				return unexpected_error(
+					ERR_INTERNAL,
+					"pipeline RTP publisher init failed: " + created.error());
+			}
+			rtp_publisher.emplace(std::move(*created));
+		}
 		if (config.outputs.rtmp.enabled) {
 			auto created = protocol::make_rtmp_output(config, stream_info);
 			if (!created) {
@@ -901,6 +903,7 @@ int run_pipeline(const RuntimeConfig &config) {
 					active_stream_info.reset();
 					using_encoded_input = false;
 					active_info.reset();
+					rtp_publisher.reset();
 					rtmp_output.reset();
 					break;
 				}