diff --git a/pkg/format/format_test.go b/pkg/format/format_test.go
index 31cc78cd..d28775b3 100644
--- a/pkg/format/format_test.go
+++ b/pkg/format/format_test.go
@@ -746,6 +746,35 @@ var casesFormat = []struct {
 			"packetization-mode": "1",
 		},
 	},
+	{
+		"video h264 annexb",
+		"video",
+		96,
+		"H264/90000",
+		map[string]string{
+			"sprop-parameter-sets": "AAAAAWdNAB6NjUBaHtCAAAOEAACvyAI=,AAAAAWjuOIA=",
+			"packetization-mode":   "1",
+			"profile-level-id":     "4DE028",
+		},
+		&H264{
+			PayloadTyp: 96,
+			SPS: []byte{
+				0x67, 0x4d, 0x00, 0x1e, 0x8d, 0x8d, 0x40, 0x5a,
+				0x1e, 0xd0, 0x80, 0x00, 0x03, 0x84, 0x00, 0x00,
+				0xaf, 0xc8, 0x02,
+			},
+			PPS: []byte{
+				0x68, 0xee, 0x38, 0x80,
+			},
+			PacketizationMode: 1,
+		},
+		"H264/90000",
+		map[string]string{
+			"packetization-mode":   "1",
+			"profile-level-id":     "4D001E",
+			"sprop-parameter-sets": "Z00AHo2NQFoe0IAAA4QAAK/IAg==,aO44gA==",
+		},
+	},
 	{
 		"video h265",
 		"video",
diff --git a/pkg/format/h264.go b/pkg/format/h264.go
index 428c549c..4c577aab 100644
--- a/pkg/format/h264.go
+++ b/pkg/format/h264.go
@@ -1,6 +1,7 @@
 package format
 
 import (
+	"bytes"
 	"encoding/base64"
 	"encoding/hex"
 	"fmt"
@@ -33,24 +34,28 @@ func (f *H264) unmarshal(ctx *unmarshalContext) error {
 		case "sprop-parameter-sets":
 			tmp := strings.Split(val, ",")
 			if len(tmp) >= 2 {
-				sps, err := base64.StdEncoding.DecodeString(tmp[0])
+				var err error
+				f.SPS, err = base64.StdEncoding.DecodeString(tmp[0])
 				if err != nil {
 					return fmt.Errorf("invalid sprop-parameter-sets (%v)", val)
 				}
 
-				pps, err := base64.StdEncoding.DecodeString(tmp[1])
+				// some cameras ship parameters with Annex-B prefix
+				f.SPS = bytes.TrimPrefix(f.SPS, []byte{0, 0, 0, 1})
+
+				f.PPS, err = base64.StdEncoding.DecodeString(tmp[1])
 				if err != nil {
 					return fmt.Errorf("invalid sprop-parameter-sets (%v)", val)
 				}
 
+				// some cameras ship parameters with Annex-B prefix
+				f.PPS = bytes.TrimPrefix(f.PPS, []byte{0, 0, 0, 1})
+
 				var spsp h264.SPS
-				err = spsp.Unmarshal(sps)
+				err = spsp.Unmarshal(f.SPS)
 				if err != nil {
 					return fmt.Errorf("invalid SPS: %v", err)
 				}
-
-				f.SPS = sps
-				f.PPS = pps
 			}
 
 		case "packetization-mode":
diff --git a/pkg/format/h265.go b/pkg/format/h265.go
index fa3fb3b5..b3a4f85c 100644
--- a/pkg/format/h265.go
+++ b/pkg/format/h265.go
@@ -37,7 +37,7 @@ func (f *H265) unmarshal(ctx *unmarshalContext) error {
 				return fmt.Errorf("invalid sprop-vps (%v)", ctx.fmtp)
 			}
 
-			// some cameras ships parameters with Annex-B prefix
+			// some cameras ship parameters with Annex-B prefix
 			f.VPS = bytes.TrimPrefix(f.VPS, []byte{0, 0, 0, 1})
 
 		case "sprop-sps":
@@ -47,7 +47,7 @@ func (f *H265) unmarshal(ctx *unmarshalContext) error {
 				return fmt.Errorf("invalid sprop-sps (%v)", ctx.fmtp)
 			}
 
-			// some cameras ships parameters with Annex-B prefix
+			// some cameras ship parameters with Annex-B prefix
 			f.SPS = bytes.TrimPrefix(f.SPS, []byte{0, 0, 0, 1})
 
 			var spsp h265.SPS
@@ -63,7 +63,7 @@ func (f *H265) unmarshal(ctx *unmarshalContext) error {
 				return fmt.Errorf("invalid sprop-pps (%v)", ctx.fmtp)
 			}
 
-			// some cameras ships parameters with Annex-B prefix
+			// some cameras ship parameters with Annex-B prefix
 			f.PPS = bytes.TrimPrefix(f.PPS, []byte{0, 0, 0, 1})
 
 			var ppsp h265.PPS