diff --git a/pkg/mp4/helpers.go b/pkg/mp4/helpers.go
index 05d97c8a..ce1825ce 100644
--- a/pkg/mp4/helpers.go
+++ b/pkg/mp4/helpers.go
@@ -164,9 +164,3 @@ func PatchVideoScale(init []byte, scaleX, scaleY int) bool {
 
 	return true
 }
-
-const (
-	stateNone byte = iota
-	stateInit
-	stateStart
-)
diff --git a/pkg/mpegts/demuxer.go b/pkg/mpegts/demuxer.go
index aade3e0e..b9271bcd 100644
--- a/pkg/mpegts/demuxer.go
+++ b/pkg/mpegts/demuxer.go
@@ -383,11 +383,3 @@ func (p *PES) GetPacket() (pkt *rtp.Packet) {
 
 	return
 }
-
-// PTSToTimestamp - convert PTS from 90000 to custom clock rate
-//func PTSToTimestamp(pts, clockRate uint32) uint32 {
-//	if clockRate == 90000 {
-//		return pts
-//	}
-//	return uint32(uint64(pts) * uint64(clockRate) / 90000)
-//}