diff --git a/media/libstagefright/SampleTable.cpp b/media/libstagefright/SampleTable.cpp
index 161ddfc..ee5fdf0 100644
--- a/media/libstagefright/SampleTable.cpp
+++ b/media/libstagefright/SampleTable.cpp
@@ -567,6 +567,10 @@
     }
 
     for (size_t i = 0; i < numSyncSamples; ++i) {
+        if (mSyncSamples[i] == 0) {
+            ALOGE("b/32423862, unexpected zero value in stss");
+            continue;
+        }
         mSyncSamples[i] = ntohl(mSyncSamples[i]) - 1;
     }