diff --git a/media/codec2/sfplugin/C2OMXNode.cpp b/media/codec2/sfplugin/C2OMXNode.cpp
index f66dc11..c049187 100644
--- a/media/codec2/sfplugin/C2OMXNode.cpp
+++ b/media/codec2/sfplugin/C2OMXNode.cpp
@@ -90,6 +90,10 @@
         }
     }
 
+    void setPriority(int priority) {
+        androidSetThreadPriority(getTid(), priority);
+    }
+
 protected:
     bool threadLoop() override {
         constexpr nsecs_t kIntervalNs = nsecs_t(10) * 1000 * 1000;  // 10ms
@@ -529,4 +533,8 @@
     return *mDataspace.lock();
 }
 
+void C2OMXNode::setPriority(int priority) {
+    mQueueThread->setPriority(priority);
+}
+
 }  // namespace android
diff --git a/media/codec2/sfplugin/C2OMXNode.h b/media/codec2/sfplugin/C2OMXNode.h
index 9c04969..6669318 100644
--- a/media/codec2/sfplugin/C2OMXNode.h
+++ b/media/codec2/sfplugin/C2OMXNode.h
@@ -98,6 +98,11 @@
      */
     android_dataspace getDataspace();
 
+    /**
+     * Sets priority of the queue thread.
+     */
+    void setPriority(int priority);
+
 private:
     std::weak_ptr<Codec2Client::Component> mComp;
     sp<IOMXBufferSource> mBufferSource;
diff --git a/media/codec2/sfplugin/CCodec.cpp b/media/codec2/sfplugin/CCodec.cpp
index 15d2989..0a895b0 100644
--- a/media/codec2/sfplugin/CCodec.cpp
+++ b/media/codec2/sfplugin/CCodec.cpp
@@ -397,6 +397,14 @@
 
         // consumer usage is queried earlier.
 
+        // priority
+        if (mConfig.mPriority != config.mPriority) {
+            if (config.mPriority != INT_MAX) {
+                mNode->setPriority(config.mPriority);
+            }
+            mConfig.mPriority = config.mPriority;
+        }
+
         if (status.str().empty()) {
             ALOGD("ISConfig not changed");
         } else {
@@ -944,6 +952,7 @@
                 }
             }
             config->mISConfig->mUsage = 0;
+            config->mISConfig->mPriority = INT_MAX;
         }
 
         /*
@@ -1135,6 +1144,16 @@
             configUpdate.push_back(std::move(qp));
         }
 
+        int32_t background = 0;
+        if ((config->mDomain & Config::IS_VIDEO)
+                && msg->findInt32("android._background-mode", &background)
+                && background) {
+            androidSetThreadPriority(gettid(), ANDROID_PRIORITY_BACKGROUND);
+            if (config->mISConfig) {
+                config->mISConfig->mPriority = ANDROID_PRIORITY_BACKGROUND;
+            }
+        }
+
         err = config->setParameters(comp, configUpdate, C2_DONT_BLOCK);
         if (err != OK) {
             ALOGW("failed to configure c2 params");
diff --git a/media/codec2/sfplugin/InputSurfaceWrapper.h b/media/codec2/sfplugin/InputSurfaceWrapper.h
index 50d600c..44ba78a 100644
--- a/media/codec2/sfplugin/InputSurfaceWrapper.h
+++ b/media/codec2/sfplugin/InputSurfaceWrapper.h
@@ -79,6 +79,7 @@
         float mFixedAdjustedFps = 0.0; // fixed fps via PTS manipulation
         float mMinAdjustedFps = 0.0; // minimum fps via PTS manipulation
         uint64_t mUsage = 0; // consumer usage
+        int mPriority = INT_MAX; // priority of queue thread (if any); INT_MAX for no-op
     };
 
     /**