diff --git a/client.go b/client.go
index c9b860d..658253d 100644
--- a/client.go
+++ b/client.go
@@ -127,7 +127,6 @@ func (p *RTSPPusher) Connect() error {
 func (p *RTSPPusher) Push() (err error) {
 	var u *url.URL
 	u, err = url.Parse(p.RemoteURL)
-	defer p.Stop()
 	// startTime := time.Now()
 	// for len(p.tracks) < 2 {
 	// 	if time.Sleep(time.Second); time.Since(startTime) > time.Second*10 {
diff --git a/publisher.go b/publisher.go
index 3a08719..b0f0b14 100644
--- a/publisher.go
+++ b/publisher.go
@@ -51,6 +51,8 @@ func (p *RTSPPublisher) SetTracks() error {
 			case *format.MPEG4Audio:
 				at := NewAAC(p.Stream, f.PayloadType(), uint32(f.Config.SampleRate))
 				p.Tracks[track] = at
+				at.IndexDeltaLength = f.IndexDeltaLength
+				at.IndexLength = f.IndexLength
 				at.SizeLength = f.SizeLength
 				if f.Config.Type == mpeg4audio.ObjectTypeAACLC {
 					at.Mode = 1
diff --git a/subscriber.go b/subscriber.go
index ee00bbb..a2baa61 100644
--- a/subscriber.go
+++ b/subscriber.go
@@ -63,9 +63,9 @@ func (s *RTSPSubscriber) OnEvent(event any) {
 						SampleRate:   int(v.SampleRate),
 						ChannelCount: int(v.Channels),
 					},
-					SizeLength:       13,
-					IndexLength:      3,
-					IndexDeltaLength: 3,
+					SizeLength:       v.SizeLength,
+					IndexLength:      v.IndexLength,
+					IndexDeltaLength: v.IndexDeltaLength,
 				}},
 			}
 			s.audioTrack = audio