--- a/content/html/content/public/HTMLMediaElement.h
+++ b/content/html/content/public/HTMLMediaElement.h
@@ -1225,16 +1225,19 @@ protected:
   bool mMediaSecurityVerified;
 
   // The CORS mode when loading the media element
   CORSMode mCORSMode;
 
   // True if the media has an audio track
   bool mHasAudio;
 
+  // True if the media has a video track
+  bool mHasVideo;
+
   // True if the media's channel's download has been suspended.
   bool mDownloadSuspendedByCache;
 
   // Audio Channel.
   AudioChannel mAudioChannel;
 
   // The audio channel has been faded.
   bool mAudioChannelFaded;

--- a/content/html/content/src/HTMLMediaElement.cpp
+++ b/content/html/content/src/HTMLMediaElement.cpp
@@ -2054,16 +2054,17 @@ HTMLMediaElement::HTMLMediaElement(alrea
     mAllowSuspendAfterFirstFrame(true),
     mHasPlayedOrSeeked(false),
     mHasSelfReference(false),
     mShuttingDown(false),
     mSuspendedForPreloadNone(false),
     mMediaSecurityVerified(false),
     mCORSMode(CORS_NONE),
     mHasAudio(false),
+    mHasVideo(false),
     mDownloadSuspendedByCache(false),
     mAudioChannelFaded(false),
     mPlayingThroughTheAudioChannel(false),
     mDisableVideo(false),
     mWaitingFor(MediaWaitingFor::None)
 {
 #ifdef PR_LOGGING
   if (!gMediaElementLog) {
@@ -2917,16 +2918,17 @@ void HTMLMediaElement::ProcessMediaFragm
     mFragmentStart = parser.GetStartTime();
   }
 }
 
 void HTMLMediaElement::MetadataLoaded(const MediaInfo* aInfo,
                                       const MetadataTags* aTags)
 {
   mHasAudio = aInfo->HasAudio();
+  mHasVideo = aInfo->HasVideo();
   mTags = aTags;
   mLoadedDataFired = false;
   ChangeReadyState(nsIDOMHTMLMediaElement::HAVE_METADATA);
   DispatchAsyncEvent(NS_LITERAL_STRING("durationchange"));
   DispatchAsyncEvent(NS_LITERAL_STRING("loadedmetadata"));
   if (mDecoder && mDecoder->IsTransportSeekable() && mDecoder->IsMediaSeekable()) {
     ProcessMediaFragmentURI();
     mDecoder->SetFragmentEndTime(mFragmentEnd);
@@ -3323,24 +3325,26 @@ VideoFrameContainer* HTMLMediaElement::G
   // If we have loaded the metadata, and the size of the video is still
   // (-1, -1), the media has no video. Don't go a create a video frame
   // container.
   if (mReadyState >= nsIDOMHTMLMediaElement::HAVE_METADATA &&
       mMediaSize == nsIntSize(-1, -1)) {
     return nullptr;
   }
 
-  if (mVideoFrameContainer)
-    return mVideoFrameContainer;
-
   // Only video frames need an image container.
   if (!IsVideo()) {
     return nullptr;
   }
 
+  mHasVideo = true;
+
+  if (mVideoFrameContainer)
+    return mVideoFrameContainer;
+
   mVideoFrameContainer =
     new VideoFrameContainer(this, LayerManager::CreateAsynchronousImageContainer());
 
   return mVideoFrameContainer;
 }
 
 nsresult HTMLMediaElement::DispatchEvent(const nsAString& aName)
 {

--- a/content/html/content/src/HTMLVideoElement.cpp
+++ b/content/html/content/src/HTMLVideoElement.cpp
@@ -242,17 +242,17 @@ HTMLVideoElement::UpdateScreenWakeLock()
   if (mScreenWakeLock && (mPaused || hidden)) {
     ErrorResult rv;
     mScreenWakeLock->Unlock(rv);
     NS_WARN_IF_FALSE(!rv.Failed(), "Failed to unlock the wakelock.");
     mScreenWakeLock = nullptr;
     return;
   }
 
-  if (!mScreenWakeLock && !mPaused && !hidden) {
+  if (!mScreenWakeLock && !mPaused && !hidden && mHasVideo) {
     nsRefPtr<power::PowerManagerService> pmService =
       power::PowerManagerService::GetInstance();
     NS_ENSURE_TRUE_VOID(pmService);
 
     ErrorResult rv;
     mScreenWakeLock = pmService->NewWakeLock(NS_LITERAL_STRING("screen"),
                                              OwnerDoc()->GetInnerWindow(),
                                              rv);

--- a/mobile/android/base/GeckoApp.java
+++ b/mobile/android/base/GeckoApp.java
@@ -2330,24 +2330,35 @@ public abstract class GeckoApp
     {
     }
 
     @Override
     public void onStatusChanged(String provider, int status, Bundle extras)
     {
     }
 
+    private static final String CPU = "cpu";
+    private static final String SCREEN = "screen";
+
     // Called when a Gecko Hal WakeLock is changed
     public void notifyWakeLockChanged(String topic, String state) {
         PowerManager.WakeLock wl = mWakeLocks.get(topic);
         if (state.equals("locked-foreground") && wl == null) {
             PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
-            wl = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, topic);
-            wl.acquire();
-            mWakeLocks.put(topic, wl);
+
+            if (CPU.equals(topic)) {
+              wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, topic);
+            } else if (SCREEN.equals(topic)) {
+              wl = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, topic);
+            }
+
+            if (wl != null) {
+              wl.acquire();
+              mWakeLocks.put(topic, wl);
+            }
         } else if (!state.equals("locked-foreground") && wl != null) {
             wl.release();
             mWakeLocks.remove(topic);
         }
     }
 
     public void notifyCheckUpdateResult(String result) {
         GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Update:CheckResult", result));