--- a/dom/media/AudioStream.cpp
+++ b/dom/media/AudioStream.cpp
@@ -357,19 +357,21 @@ AudioStream::OpenCubeb(cubeb_stream_para
 {
   cubeb* cubebContext = CubebUtils::GetCubebContext();
   if (!cubebContext) {
     NS_WARNING("Can't get cubeb context!");
     return NS_ERROR_FAILURE;
   }
 
   cubeb_stream* stream = nullptr;
+  /* Convert from milliseconds to frames. */
+  uint32_t latency_frames = CubebUtils::GetCubebLatency() * aParams.rate / 1000;
   if (cubeb_stream_init(cubebContext, &stream, "AudioStream",
                         nullptr, nullptr, nullptr, &aParams,
-                        CubebUtils::GetCubebLatency(),
+                        latency_frames,
                         DataCallback_S, StateCallback_S, this) == CUBEB_OK) {
     mCubebStream.reset(stream);
     CubebUtils::ReportCubebBackendUsed();
   } else {
     NS_WARNING(nsPrintfCString("AudioStream::OpenCubeb() %p failed to init cubeb", this).get());
     CubebUtils::ReportCubebStreamInitFailure(aIsFirst);
     return NS_ERROR_FAILURE;
   }

--- a/dom/media/GraphDriver.cpp
+++ b/dom/media/GraphDriver.cpp
@@ -554,17 +554,17 @@ AudioCallbackDriver::~AudioCallbackDrive
   MOZ_ASSERT(mPromisesForOperation.IsEmpty());
 }
 
 void
 AudioCallbackDriver::Init()
 {
   cubeb_stream_params output;
   cubeb_stream_params input;
-  uint32_t latency;
+  uint32_t latency_frames;
   bool firstStream = CubebUtils::GetFirstStream();
 
   MOZ_ASSERT(!NS_IsMainThread(),
       "This is blocking and should never run on the main thread.");
 
   mSampleRate = output.rate = CubebUtils::PreferredSampleRate();
 
 #if defined(__ANDROID__)
@@ -583,17 +583,17 @@ AudioCallbackDriver::Init()
 
   output.channels = mGraphImpl->AudioChannelCount();
   if (AUDIO_OUTPUT_FORMAT == AUDIO_FORMAT_S16) {
     output.format = CUBEB_SAMPLE_S16NE;
   } else {
     output.format = CUBEB_SAMPLE_FLOAT32NE;
   }
 
-  if (cubeb_get_min_latency(CubebUtils::GetCubebContext(), output, &latency) != CUBEB_OK) {
+  if (cubeb_get_min_latency(CubebUtils::GetCubebContext(), output, &latency_frames) != CUBEB_OK) {
     NS_WARNING("Could not get minimal latency from cubeb.");
     return;
   }
 
   input = output;
   input.channels = mInputChannels; // change to support optional stereo capture
 
   cubeb_stream* stream = nullptr;
@@ -619,17 +619,17 @@ AudioCallbackDriver::Init()
         // XXX Only pass input input if we have an input listener.  Always
         // set up output because it's easier, and it will just get silence.
         // XXX Add support for adding/removing an input listener later.
         cubeb_stream_init(CubebUtils::GetCubebContext(), &stream,
                           "AudioCallbackDriver",
                           input_id,
                           mGraphImpl->mInputWanted ? &input : nullptr,
                           output_id,
-                          mGraphImpl->mOutputWanted ? &output : nullptr, latency,
+                          mGraphImpl->mOutputWanted ? &output : nullptr, latency_frames,
                           DataCallback_s, StateCallback_s, this) == CUBEB_OK) {
       mAudioStream.own(stream);
       DebugOnly<int> rv = cubeb_stream_set_volume(mAudioStream, CubebUtils::GetVolumeScale());
       NS_WARN_IF_FALSE(rv == CUBEB_OK,
           "Could not set the audio stream volume in GraphDriver.cpp");
       CubebUtils::ReportCubebBackendUsed();
     } else {
 #ifdef MOZ_WEBRTC