diff --git a/content/media/omx/OmxDecoder.cpp b/content/media/omx/OmxDecoder.cpp
index 0ac1ae3869e4..5ce86774dcb9 100644
--- a/content/media/omx/OmxDecoder.cpp
+++ b/content/media/omx/OmxDecoder.cpp
@@ -421,6 +421,18 @@ bool OmxDecoder::TryLoad() {
 
   // read audio metadata
   if (mAudioSource.get()) {
+    // For RTSP, we don't read the audio source for now.
+    // The metadata of RTSP will be obtained through SDP at connection time.
+    if (mResource->GetRtspPointer()) {
+      sp<MetaData> meta = mAudioSource->getFormat();
+      if (!meta->findInt32(kKeyChannelCount, &mAudioChannels) ||
+          !meta->findInt32(kKeySampleRate, &mAudioSampleRate)) {
+        NS_WARNING("Couldn't get audio metadata from OMX decoder");
+        return false;
+      }
+      return true;
+    }
+
     // To reliably get the channel and sample rate data we need to read from the
     // audio source until we get a INFO_FORMAT_CHANGE status
     status_t err = mAudioSource->read(&mAudioBuffer);
diff --git a/content/media/omx/RtspOmxReader.h b/content/media/omx/RtspOmxReader.h
index be4c4de54313..399ab74bf6a4 100644
--- a/content/media/omx/RtspOmxReader.h
+++ b/content/media/omx/RtspOmxReader.h
@@ -62,6 +62,15 @@ public:
     return NS_OK;
   }
 
+  // Override FindStartTime() to return null pointer.
+  // For Rtsp, we don't have the first video frame in DECODING_METADATA state.
+  // It will be available until player request Play() and media decoder enters
+  // DECODING state.
+  virtual VideoData* FindStartTime(int64_t& aOutStartTime)
+    MOZ_FINAL MOZ_OVERRIDE {
+    return nullptr;
+  }
+
 private:
   // A pointer to RtspMediaResource for calling the Rtsp specific function.
   // The lifetime of mRtspResource is controlled by MediaDecoder. MediaDecoder