diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp
index 663f285..9385b8a 100644
--- a/media/libstagefright/MPEG4Extractor.cpp
+++ b/media/libstagefright/MPEG4Extractor.cpp
@@ -373,7 +373,8 @@
 
     if (mInitCheck == OK) {
         if (mHasVideo) {
-            mFileMetaData->setCString(kKeyMIMEType, "video/mp4");
+            mFileMetaData->setCString(
+                    kKeyMIMEType, MEDIA_MIMETYPE_CONTAINER_MPEG4);
         } else {
             mFileMetaData->setCString(kKeyMIMEType, "audio/mp4");
         }
diff --git a/media/libstagefright/MediaDefs.cpp b/media/libstagefright/MediaDefs.cpp
index 2549de6..2740d6b 100644
--- a/media/libstagefright/MediaDefs.cpp
+++ b/media/libstagefright/MediaDefs.cpp
@@ -41,7 +41,7 @@
 const char *MEDIA_MIMETYPE_AUDIO_FLAC = "audio/flac";
 const char *MEDIA_MIMETYPE_AUDIO_AAC_ADTS = "audio/aac-adts";
 
-const char *MEDIA_MIMETYPE_CONTAINER_MPEG4 = "video/mpeg4";
+const char *MEDIA_MIMETYPE_CONTAINER_MPEG4 = "video/mp4";
 const char *MEDIA_MIMETYPE_CONTAINER_WAV = "audio/wav";
 const char *MEDIA_MIMETYPE_CONTAINER_OGG = "application/ogg";
 const char *MEDIA_MIMETYPE_CONTAINER_MATROSKA = "video/x-matroska";