diff --git a/go.mod b/go.mod
index ecbdd199..6d673886 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/bluenviron/gortsplib/v4
 go 1.21
 
 require (
-	github.com/bluenviron/mediacommon v1.13.2
+	github.com/bluenviron/mediacommon v1.13.3
 	github.com/google/uuid v1.6.0
 	github.com/pion/rtcp v1.2.15
 	github.com/pion/rtp v1.8.7-0.20240429002300-bc5124c9d0d0
diff --git a/go.sum b/go.sum
index f3fe3185..9e27b27f 100644
--- a/go.sum
+++ b/go.sum
@@ -2,8 +2,8 @@ github.com/asticode/go-astikit v0.30.0 h1:DkBkRQRIxYcknlaU7W7ksNfn4gMFsB0tqMJflx
 github.com/asticode/go-astikit v0.30.0/go.mod h1:h4ly7idim1tNhaVkdVBeXQZEE3L0xblP7fCWbgwipF0=
 github.com/asticode/go-astits v1.13.0 h1:XOgkaadfZODnyZRR5Y0/DWkA9vrkLLPLeeOvDwfKZ1c=
 github.com/asticode/go-astits v1.13.0/go.mod h1:QSHmknZ51pf6KJdHKZHJTLlMegIrhega3LPWz3ND/iI=
-github.com/bluenviron/mediacommon v1.13.2 h1:Ssq+59ZtPm5f9iAVVugWNOyl89Vp0G758RMv033lkik=
-github.com/bluenviron/mediacommon v1.13.2/go.mod h1:tffg+sPMErUIe7WMq7ZlYry/rPE6TyENWCrYT5JWcgs=
+github.com/bluenviron/mediacommon v1.13.3 h1:PgprN9mAd/F5ew7Ym+UZCiCJstQVT5mZXtmN9JZvv4Y=
+github.com/bluenviron/mediacommon v1.13.3/go.mod h1:RrO01FltoVUlTBGXbOYtmx1ft1oBOpLxfNGsYlaFAO8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
diff --git a/pkg/format/rtpav1/encoder.go b/pkg/format/rtpav1/encoder.go
index 941a643b..876d5d94 100644
--- a/pkg/format/rtpav1/encoder.go
+++ b/pkg/format/rtpav1/encoder.go
@@ -112,8 +112,9 @@ func (e *Encoder) Encode(obus [][]byte) ([]*rtp.Packet, error) {
 			needed := obuLen + 2
 
 			if needed <= avail {
-				buf := make([]byte, av1.LEB128MarshalSize(uint(obuLen)))
-				av1.LEB128MarshalTo(uint(obuLen), buf)
+				obuLenLEB := av1.LEB128(obuLen)
+				buf := make([]byte, obuLenLEB.MarshalSize())
+				obuLenLEB.MarshalTo(buf)
 				curPacket.Payload = append(curPacket.Payload, buf...)
 				curPacket.Payload = append(curPacket.Payload, obu...)
 				curPayloadLen += len(buf) + obuLen
@@ -122,8 +123,9 @@ func (e *Encoder) Encode(obus [][]byte) ([]*rtp.Packet, error) {
 
 			if avail > 2 {
 				fragmentLen := avail - 2
-				buf := make([]byte, av1.LEB128MarshalSize(uint(fragmentLen)))
-				av1.LEB128MarshalTo(uint(fragmentLen), buf)
+				fragmentLenLEB := av1.LEB128(fragmentLen)
+				buf := make([]byte, fragmentLenLEB.MarshalSize())
+				fragmentLenLEB.MarshalTo(buf)
 				curPacket.Payload = append(curPacket.Payload, buf...)
 				curPacket.Payload = append(curPacket.Payload, obu[:fragmentLen]...)
 				obu = obu[fragmentLen:]