diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index 2ae72ef..c43aa75 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -75,6 +75,7 @@
     ":android.speech.flags-aconfig-java{.generated_srcjars}",
     ":power_flags_lib{.generated_srcjars}",
     ":android.content.flags-aconfig-java{.generated_srcjars}",
+    ":aconfig_mediacodec_flags_java_lib{.generated_srcjars}",
 ]
 
 filegroup {
diff --git a/core/api/current.txt b/core/api/current.txt
index 15c054f..8bda142 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -23341,6 +23341,7 @@
     field public static final String KEY_HDR10_PLUS_INFO = "hdr10-plus-info";
     field public static final String KEY_HDR_STATIC_INFO = "hdr-static-info";
     field public static final String KEY_HEIGHT = "height";
+    field @FlaggedApi("com.android.media.codec.flags.codec_importance") public static final String KEY_IMPORTANCE = "importance";
     field public static final String KEY_INTRA_REFRESH_PERIOD = "intra-refresh-period";
     field public static final String KEY_IS_ADTS = "is-adts";
     field public static final String KEY_IS_AUTOSELECT = "is-autoselect";
diff --git a/media/java/android/media/MediaFormat.java b/media/java/android/media/MediaFormat.java
index 46db777..587e35b 100644
--- a/media/java/android/media/MediaFormat.java
+++ b/media/java/android/media/MediaFormat.java
@@ -16,6 +16,9 @@
 
 package android.media;
 
+import static com.android.media.codec.flags.Flags.FLAG_CODEC_IMPORTANCE;
+
+import android.annotation.FlaggedApi;
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
@@ -1635,6 +1638,34 @@
      */
     public static final String KEY_ALLOW_FRAME_DROP = "allow-frame-drop";
 
+    /**
+     * A key describing the desired codec importance for the application.
+     * <p>
+     * The associated value is a positive integer including zero.
+     * Higher value means lesser importance.
+     * <p>
+     * The resource manager may use the codec importance, along with other factors
+     * when reclaiming codecs from an application.
+     * The specifics of reclaim policy is device dependent, but specifying the codec importance,
+     * will allow the resource manager to prioritize reclaiming less important codecs
+     * (assigned higher values) from the (reclaim) requesting application first.
+     * So, the codec importance is only relevant within the context of that application.
+     * <p>
+     * The codec importance can be set:
+     * <ul>
+     * <li>through {@link MediaCodec#configure}. </li>
+     * <li>through {@link MediaCodec#setParameters} if the codec has been configured already,
+     * which allows the users to change the codec importance multiple times.
+     * </ul>
+     * Any change/update in codec importance is guaranteed upon the completion of the function call
+     * that sets the codec importance. So, in case of concurrent codec operations,
+     * make sure to wait for the change in codec importance, before using another codec.
+     * Note that unless specified, by default the codecs will have highest importance (of value 0).
+     *
+     */
+    @FlaggedApi(FLAG_CODEC_IMPORTANCE)
+    public static final String KEY_IMPORTANCE = "importance";
+
     /* package private */ MediaFormat(@NonNull Map<String, Object> map) {
         mMap = map;
     }