diff --git a/go.mod b/go.mod
index b1b98a8..75b3e0e 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.19
 
 require (
 	github.com/Comcast/gots/v2 v2.2.1
-	github.com/Eyevinn/mp4ff v0.41.1-0.20240123164056-bbd4656aecc0
+	github.com/Eyevinn/mp4ff v0.42.0
 	github.com/asticode/go-astits v1.13.0
 	github.com/stretchr/testify v1.8.4
 )
diff --git a/go.sum b/go.sum
index 73df12f..7e9c4c1 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,7 @@
 github.com/Comcast/gots/v2 v2.2.1 h1:LU/SRg7p2KQqVkNqInV7I4MOQKAqvWQP/PSSLtygP2s=
 github.com/Comcast/gots/v2 v2.2.1/go.mod h1:firJ11on3eUiGHAhbY5cZNqG0OqhQ1+nSZHfsEEzVVU=
-github.com/Eyevinn/mp4ff v0.41.1-0.20240123164056-bbd4656aecc0 h1:TVO5vjF4CEAB6OKR0RWMQFvHXtZ+UdKCsp+awECiIVE=
-github.com/Eyevinn/mp4ff v0.41.1-0.20240123164056-bbd4656aecc0/go.mod h1:w/6GSa5ghZ1VavzJK6McQ2/flx8mKtcrKDr11SsEweA=
+github.com/Eyevinn/mp4ff v0.42.0 h1:I85b/EDTkP77GsoBL8nRV6sfFKZhAXoP6oJHU8fv6kM=
+github.com/Eyevinn/mp4ff v0.42.0/go.mod h1:w/6GSa5ghZ1VavzJK6McQ2/flx8mKtcrKDr11SsEweA=
 github.com/asticode/go-astikit v0.30.0/go.mod h1:h4ly7idim1tNhaVkdVBeXQZEE3L0xblP7fCWbgwipF0=
 github.com/asticode/go-astikit v0.42.0 h1:pnir/2KLUSr0527Tv908iAH6EGYYrYta132vvjXsH5w=
 github.com/asticode/go-astikit v0.42.0/go.mod h1:h4ly7idim1tNhaVkdVBeXQZEE3L0xblP7fCWbgwipF0=
diff --git a/internal/avc.go b/internal/avc.go
index 75cc757..04aeb94 100644
--- a/internal/avc.go
+++ b/internal/avc.go
@@ -12,7 +12,7 @@ type AvcPS struct {
 	spss       map[uint32]*avc.SPS
 	ppss       map[uint32]*avc.PPS
 	spsnalu    []byte
-	ppsnalus   [][]byte
+	ppsnalus   map[uint32][]byte
 	Statistics StreamStatistics
 }
 
@@ -31,7 +31,7 @@ func (a *AvcPS) setSPS(nalu []byte) error {
 	if a.spss == nil {
 		a.spss = make(map[uint32]*avc.SPS, 1)
 		a.ppss = make(map[uint32]*avc.PPS, 1)
-		a.ppsnalus = make([][]byte, 1)
+		a.ppsnalus = make(map[uint32][]byte)
 	}
 	sps, err := avc.ParseSPSNALUnit(nalu, true)
 	if err != nil {
diff --git a/internal/hevc.go b/internal/hevc.go
index ecfc1b6..007a01a 100644
--- a/internal/hevc.go
+++ b/internal/hevc.go
@@ -14,7 +14,7 @@ type HevcPS struct {
 	ppss       map[uint32]*hevc.PPS
 	vpsnalu    []byte
 	spsnalu    []byte
-	ppsnalus   [][]byte
+	ppsnalus   map[uint32][]byte
 	Statistics StreamStatistics
 }
 
@@ -22,7 +22,7 @@ func (a *HevcPS) setSPS(nalu []byte) error {
 	if a.spss == nil {
 		a.spss = make(map[uint32]*hevc.SPS, 1)
 		a.ppss = make(map[uint32]*hevc.PPS, 1)
-		a.ppsnalus = make([][]byte, 1)
+		a.ppsnalus = make(map[uint32][]byte, 1)
 	}
 	sps, err := hevc.ParseSPSNALUnit(nalu)
 	if err != nil {