diff --git a/dom/media/platforms/agnostic/VorbisDecoder.cpp b/dom/media/platforms/agnostic/VorbisDecoder.cpp
index 0391fed0191e..76ca198070ac 100644
--- a/dom/media/platforms/agnostic/VorbisDecoder.cpp
+++ b/dom/media/platforms/agnostic/VorbisDecoder.cpp
@@ -156,6 +156,8 @@ VorbisDataDecoder::ProcessDecode(MediaRawData* aSample)
   const unsigned char* aData = aSample->Data();
   size_t aLength = aSample->Size();
   int64_t aOffset = aSample->mOffset;
+  auto aTstampUsecs = aSample->mTime;
+  int64_t aTotalFrames = 0;
 
   MOZ_ASSERT(mPacketCount >= 3);
 
@@ -223,12 +225,12 @@ VorbisDataDecoder::ProcessDecode(MediaRawData* aSample)
         __func__);
     }
 
-    auto time = total_duration + aSample->mTime;
+    auto time = total_duration + aTstampUsecs;
     if (!time.IsValid()) {
       return DecodePromise::CreateAndReject(
         MediaResult(
           NS_ERROR_DOM_MEDIA_OVERFLOW_ERR,
-          RESULT_DETAIL("Overflow adding total_duration and aSample->mTime")),
+          RESULT_DETAIL("Overflow adding total_duration and aTstampUsecs")),
         __func__);
     };
 
@@ -248,6 +250,8 @@ VorbisDataDecoder::ProcessDecode(MediaRawData* aSample)
     AudioSampleBuffer data(Move(buffer));
     data = mAudioConverter->Process(Move(data));
 
+    aTotalFrames += frames;
+
     results.AppendElement(new AudioData(aOffset, time, duration,
                                         frames, data.Forget(), channels, rate));
     mFrames += frames;