diff --git a/internal/core/hls_source.go b/internal/core/hls_source.go
index a4f4def9..679961b0 100644
--- a/internal/core/hls_source.go
+++ b/internal/core/hls_source.go
@@ -115,7 +115,7 @@ func (s *hlsSource) runInner() bool {
 		if audioTrack != nil {
 			audioTrackID = len(tracks)
 			audioEnc = &rtpaac.Encoder{
-				PayloadType:      97,
+				PayloadType:      96,
 				SampleRate:       audioTrack.ClockRate(),
 				SizeLength:       13,
 				IndexLength:      3,
diff --git a/internal/core/rtmp_conn.go b/internal/core/rtmp_conn.go
index 26cd3a6d..e646df02 100644
--- a/internal/core/rtmp_conn.go
+++ b/internal/core/rtmp_conn.go
@@ -460,7 +460,7 @@ func (c *rtmpConn) runPublish(ctx context.Context) error {
 	var aacEncoder *rtpaac.Encoder
 	if audioTrack != nil {
 		aacEncoder = &rtpaac.Encoder{
-			PayloadType:      97,
+			PayloadType:      96,
 			SampleRate:       audioTrack.ClockRate(),
 			SizeLength:       13,
 			IndexLength:      3,
diff --git a/internal/core/rtmp_source.go b/internal/core/rtmp_source.go
index 55ff268b..2110754d 100644
--- a/internal/core/rtmp_source.go
+++ b/internal/core/rtmp_source.go
@@ -144,7 +144,7 @@ func (s *rtmpSource) runInner() bool {
 					var aacEncoder *rtpaac.Encoder
 					if audioTrack != nil {
 						aacEncoder = &rtpaac.Encoder{
-							PayloadType:      97,
+							PayloadType:      96,
 							SampleRate:       audioTrack.ClockRate(),
 							SizeLength:       13,
 							IndexLength:      3,
diff --git a/internal/hls/client_audio_processor.go b/internal/hls/client_audio_processor.go
index a14f40b5..5884be74 100644
--- a/internal/hls/client_audio_processor.go
+++ b/internal/hls/client_audio_processor.go
@@ -78,7 +78,7 @@ func (p *clientAudioProcessor) doProcess(
 		if !p.trackInitialized {
 			p.trackInitialized = true
 
-			track, err := gortsplib.NewTrackAAC(97, pkt.Type, pkt.SampleRate, pkt.ChannelCount, nil, 13, 3, 3)
+			track, err := gortsplib.NewTrackAAC(96, pkt.Type, pkt.SampleRate, pkt.ChannelCount, nil, 13, 3, 3)
 			if err != nil {
 				return err
 			}