diff --git a/stream/rtp/rtp.go b/stream/rtp/rtp.go
index b9234b0f..fa62d9fb 100644
--- a/stream/rtp/rtp.go
+++ b/stream/rtp/rtp.go
@@ -45,7 +45,7 @@ type Pkt struct {
 	TS      uint32 // Timestamp
 	SSRC    uint32 // Synchronisation source identifier
 	Payload []byte // H264 Payload data
-	Padding int    // No of bytes of padding
+	Padding byte   // No of bytes of padding
 }
 
 func (p *Pkt) Bytes() []byte {
@@ -72,7 +72,7 @@ func (p *Pkt) Bytes() []byte {
 	}
 
 	const headSize = 3 * 4 // bytes
-	buf := make([]byte, headSize, headSize+len(p.Payload)+p.Padding)
+	buf := make([]byte, headSize, headSize+len(p.Payload)+int(p.Padding))
 
 	buf[0] = p.V<<6 | p.P<<5 | p.CC
 	buf[1] = p.M<<7 | p.PT
@@ -89,7 +89,8 @@ func (p *Pkt) Bytes() []byte {
 
 	buf = append(buf, p.Payload...)
 	if p.Padding != 0 {
-		buf = append(buf, append(make([]byte, p.Padding-1, p.Padding), byte(p.Padding))...)
+		buf = buf[:cap(buf)]
+		buf[len(buf)-1] = byte(p.Padding)
 	}
 	return buf
 }