diff --git a/tests/tests/media/src/android/media/cts/NativeDecoderTest.java b/tests/tests/media/src/android/media/cts/NativeDecoderTest.java
index 76620c1..81c5113 100644
--- a/tests/tests/media/src/android/media/cts/NativeDecoderTest.java
+++ b/tests/tests/media/src/android/media/cts/NativeDecoderTest.java
@@ -406,6 +406,10 @@
     }
 
     private void testMuxer(int res, boolean webm) throws Exception {
+        if (!supportsPlayback(res)) {
+            Log.i(TAG, "SKIPPING testMuxer() resid=" + res + " Unsupported decorder.");
+            return;
+        }
         AssetFileDescriptor infd = mResources.openRawResourceFd(res);
 
         File base = mContext.getExternalFilesDir(null);