diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index fa567b9389..7e5b46ea26 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -38,6 +38,8 @@
     *   Replace `androidx.media3.transformer.Muxer` interface with
         `androidx.media3.muxer.Muxer` and remove
         `androidx.media3.transformer.Muxer`.
+    *   Fix HEIC image loading from content URI schemes.
+        ([#1373](https://github.com/androidx/media/issues/1373)).
 *   Track Selection:
 *   Extractors:
     *   MPEG-TS: Roll forward the change ensuring the last frame is rendered by
@@ -74,6 +76,7 @@
 *   Image:
     *   Add support for non-square DASH thumbnail grids
         ([#1300](https://github.com/androidx/media/pull/1300)).
+    *   Add AVIF decoding support for API 34+.
 *   DRM:
     *   Allow setting a `LoadErrorHandlingPolicy` on
         `DefaultDrmSessionManagerProvider`
diff --git a/libraries/common/src/main/java/androidx/media3/common/MimeTypes.java b/libraries/common/src/main/java/androidx/media3/common/MimeTypes.java
index d2fc3173b2..9f11899885 100644
--- a/libraries/common/src/main/java/androidx/media3/common/MimeTypes.java
+++ b/libraries/common/src/main/java/androidx/media3/common/MimeTypes.java
@@ -164,6 +164,8 @@ public final class MimeTypes {
   @UnstableApi public static final String IMAGE_JPEG_R = BASE_TYPE_IMAGE + "/jpeg_r";
   @UnstableApi public static final String IMAGE_PNG = BASE_TYPE_IMAGE + "/png";
   @UnstableApi public static final String IMAGE_HEIF = BASE_TYPE_IMAGE + "/heif";
+  @UnstableApi public static final String IMAGE_HEIC = BASE_TYPE_IMAGE + "/heic";
+  @UnstableApi public static final String IMAGE_AVIF = BASE_TYPE_IMAGE + "/avif";
   @UnstableApi public static final String IMAGE_BMP = BASE_TYPE_IMAGE + "/bmp";
   @UnstableApi public static final String IMAGE_WEBP = BASE_TYPE_IMAGE + "/webp";
   @UnstableApi public static final String IMAGE_RAW = BASE_TYPE_IMAGE + "/raw";
diff --git a/libraries/common/src/main/java/androidx/media3/common/util/Util.java b/libraries/common/src/main/java/androidx/media3/common/util/Util.java
index 12f9388982..6ddc479a45 100644
--- a/libraries/common/src/main/java/androidx/media3/common/util/Util.java
+++ b/libraries/common/src/main/java/androidx/media3/common/util/Util.java
@@ -3230,7 +3230,10 @@ public final class Util {
       case MimeTypes.IMAGE_WEBP:
         return true;
       case MimeTypes.IMAGE_HEIF:
+      case MimeTypes.IMAGE_HEIC:
         return Util.SDK_INT >= 26;
+      case MimeTypes.IMAGE_AVIF:
+        return Util.SDK_INT >= 34;
       default:
         return false;
     }
diff --git a/libraries/common/src/test/java/androidx/media3/common/MimeTypesTest.java b/libraries/common/src/test/java/androidx/media3/common/MimeTypesTest.java
index 6852147614..7c2ec51e2a 100644
--- a/libraries/common/src/test/java/androidx/media3/common/MimeTypesTest.java
+++ b/libraries/common/src/test/java/androidx/media3/common/MimeTypesTest.java
@@ -120,6 +120,8 @@ public final class MimeTypesTest {
     assertThat(MimeTypes.isImage(MimeTypes.IMAGE_JPEG)).isTrue();
     assertThat(MimeTypes.isImage(MimeTypes.IMAGE_PNG)).isTrue();
     assertThat(MimeTypes.isImage(MimeTypes.IMAGE_HEIF)).isTrue();
+    assertThat(MimeTypes.isImage(MimeTypes.IMAGE_HEIC)).isTrue();
+    assertThat(MimeTypes.isImage(MimeTypes.IMAGE_AVIF)).isTrue();
     assertThat(MimeTypes.isImage(MimeTypes.IMAGE_BMP)).isTrue();
     assertThat(MimeTypes.isImage(MimeTypes.IMAGE_WEBP)).isTrue();
     assertThat(MimeTypes.isImage("image/custom")).isTrue();
diff --git a/libraries/transformer/src/main/java/androidx/media3/transformer/ImageUtil.java b/libraries/transformer/src/main/java/androidx/media3/transformer/ImageUtil.java
index a2a380bcc8..ea3803bb87 100644
--- a/libraries/transformer/src/main/java/androidx/media3/transformer/ImageUtil.java
+++ b/libraries/transformer/src/main/java/androidx/media3/transformer/ImageUtil.java
@@ -47,8 +47,9 @@ public final class ImageUtil {
       case "dib":
         return MimeTypes.IMAGE_BMP;
       case "heif":
-      case "heic":
         return MimeTypes.IMAGE_HEIF;
+      case "heic":
+        return MimeTypes.IMAGE_HEIC;
       case "jpg":
       case "jpeg":
       case "jpe":
@@ -76,7 +77,7 @@ public final class ImageUtil {
       case "ico":
         return "image/x-icon";
       case "avif":
-        return "image/avif";
+        return MimeTypes.IMAGE_AVIF;
       default:
         return null;
     }