commit - f7c6ae15d84416d1c6a4d34c1c5a35a35ecbb612
commit + 3b1acc9102e2f96d3b40224dee1007a820c89675
blob - 5c634bae8a2f1f60af2fdb497a11d8d56b6f94fc
blob + 242e18c2a2144ff847b36e827ec131dcd5058876
--- rtp/rtp.go
+++ rtp/rtp.go
@@ -127,6 +127,8 @@ var ErrNoPayload = errors.New("no payload")
 // - 1 byte (version, padding, extension, contrib count)
 // - 1 byte (marker + type)
 // - 2 bytes (sequence)
+// - 4 bytes (timestamp)
+// - 4 bytes (sync source)
 const minHeaderLength = 12
 
 func Unmarshal(data []byte, p *Packet) error {