--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -2674,16 +2674,20 @@ void MediaDecoderStateMachine::StartBuff
     // We only move into BUFFERING state if we're actually decoding.
     // If we're currently doing something else, we don't need to buffer,
     // and more importantly, we shouldn't overwrite mState to interrupt
     // the current operation, as that could leave us in an inconsistent
     // state!
     return;
   }
 
+  // Update playback position again before entering BUFFERING so the currentTime
+  // of the media element is more accurate during buffering.
+  UpdatePlaybackPositionPeriodically();
+
   if (IsPlaying()) {
     StopPlayback();
   }
 
   TimeDuration decodeDuration = TimeStamp::Now() - mDecodeStartTime;
   // Go into quick buffering mode provided we've not just left buffering using
   // a "quick exit". This stops us flip-flopping between playing and buffering
   // when the download speed is similar to the decode speed.