diff --git a/stream/mts/encoder.go b/stream/mts/encoder.go
index 29875588..41dd94d2 100644
--- a/stream/mts/encoder.go
+++ b/stream/mts/encoder.go
@@ -140,7 +140,7 @@ func (tl *timeLocation) SetTimeStamp(t uint64) {
 }
 
 // GetTimeStamp returns the location of a TimeLocation.
-func (tl *timeLocation) GetTimeStamp() uint64 {
+func (tl *timeLocation) TimeStamp() uint64 {
 	tl.RLock()
 	defer tl.RUnlock()
 	return tl.time
@@ -154,7 +154,7 @@ func (tl *timeLocation) SetLocation(l string) {
 }
 
 // GetLocation returns the location of a TimeLocation.
-func (tl *timeLocation) GetLocation() string {
+func (tl *timeLocation) Location() string {
 	tl.RLock()
 	defer tl.RUnlock()
 	return tl.location
@@ -294,11 +294,11 @@ func (e *Encoder) writePSI() error {
 	}
 
 	// Update pmt table time and location.
-	err = psi.UpdateTime(pmtTable, MetaData.GetTimeStamp())
+	err = psi.UpdateTime(pmtTable, MetaData.TimeStamp())
 	if err != nil {
 		return err
 	}
-	err = psi.UpdateLocation(pmtTable, MetaData.GetLocation())
+	err = psi.UpdateLocation(pmtTable, MetaData.Location())
 	if err != nil {
 		return nil
 	}