diff --git a/pkg/mp4/consumer.go b/pkg/mp4/consumer.go
index 777ee340..496ae65b 100644
--- a/pkg/mp4/consumer.go
+++ b/pkg/mp4/consumer.go
@@ -171,8 +171,12 @@ func (c *Consumer) AddTrack(media *streamer.Media, track *streamer.Track) *strea
 	panic("unsupported codec")
 }
 
+func (c *Consumer) MimeCodecs() string {
+	return c.muxer.MimeCodecs(c.codecs)
+}
+
 func (c *Consumer) MimeType() string {
-	return c.muxer.MimeType(c.codecs)
+	return `video/mp4; codecs="` + c.MimeCodecs() + `"`
 }
 
 func (c *Consumer) Init() ([]byte, error) {
diff --git a/pkg/mp4/muxer.go b/pkg/mp4/muxer.go
index 83bb33c5..cd7d9762 100644
--- a/pkg/mp4/muxer.go
+++ b/pkg/mp4/muxer.go
@@ -24,8 +24,8 @@ const (
 	MimeOpus = "opus"
 )
 
-func (m *Muxer) MimeType(codecs []*streamer.Codec) string {
-	s := `video/mp4; codecs="`
+func (m *Muxer) MimeCodecs(codecs []*streamer.Codec) string {
+	var s string
 
 	for i, codec := range codecs {
 		if i > 0 {
@@ -46,7 +46,7 @@ func (m *Muxer) MimeType(codecs []*streamer.Codec) string {
 		}
 	}
 
-	return s + `"`
+	return s
 }
 
 func (m *Muxer) GetInit(codecs []*streamer.Codec) ([]byte, error) {
diff --git a/pkg/mp4/segment.go b/pkg/mp4/segment.go
index 9cc3a88a..6fac7a40 100644
--- a/pkg/mp4/segment.go
+++ b/pkg/mp4/segment.go
@@ -50,7 +50,7 @@ func (c *Segment) AddTrack(media *streamer.Media, track *streamer.Track) *stream
 		return nil
 	}
 
-	c.MimeType = muxer.MimeType(codecs)
+	c.MimeType = `video/mp4; codecs="` + muxer.MimeCodecs(codecs) + `"`
 
 	switch track.Codec.Name {
 	case streamer.CodecH264: