diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp
index 2cc43c1..4a33e7a 100644
--- a/media/libstagefright/MPEG4Extractor.cpp
+++ b/media/libstagefright/MPEG4Extractor.cpp
@@ -936,6 +936,12 @@
                 ALOGE("moov: depth %d", depth);
                 return ERROR_MALFORMED;
             }
+
+            if (chunk_type == FOURCC('m', 'o', 'o', 'v') && mInitCheck == OK) {
+                ALOGE("duplicate moov");
+                return ERROR_MALFORMED;
+            }
+
             if (chunk_type == FOURCC('m', 'o', 'o', 'f') && !mMoofFound) {
                 // store the offset of the first segment
                 mMoofFound = true;
@@ -1009,6 +1015,12 @@
                 if (!mLastTrack->meta->findInt32(kKeyTrackID, &trackId)) {
                     mLastTrack->skipTrack = true;
                 }
+
+                status_t err = verifyTrack(mLastTrack);
+                if (err != OK) {
+                    mLastTrack->skipTrack = true;
+                }
+
                 if (mLastTrack->skipTrack) {
                     Track *cur = mFirstTrack;
 
@@ -1026,12 +1038,6 @@
 
                     return OK;
                 }
-
-                status_t err = verifyTrack(mLastTrack);
-
-                if (err != OK) {
-                    return err;
-                }
             } else if (chunk_type == FOURCC('m', 'o', 'o', 'v')) {
                 mInitCheck = OK;