diff --git libavformat/isom.c libavformat/isom.c
index c99f2dc..1663332 100644
--- libavformat/isom.c
+++ libavformat/isom.c
@@ -281,8 +281,11 @@ const AVCodecTag ff_codec_movaudio_tags[] = {
     { AV_CODEC_ID_MACE3,           MKTAG('M', 'A', 'C', '3') },
     { AV_CODEC_ID_MACE6,           MKTAG('M', 'A', 'C', '6') },
     { AV_CODEC_ID_MP1,             MKTAG('.', 'm', 'p', '1') },
-    { AV_CODEC_ID_MP2,             MKTAG('.', 'm', 'p', '2') },
-    { AV_CODEC_ID_MP3,             MKTAG('.', 'm', 'p', '3') },
+    // MEANX { AV_CODEC_ID_MP2,             MKTAG('.', 'm', 'p', '2') },
+    // MEANX { AV_CODEC_ID_MP3,             MKTAG('.', 'm', 'p', '3') },
+     { AV_CODEC_ID_MP2,             MKTAG( 'm', 'p', '4' ,'a') },
+     { AV_CODEC_ID_MP3,             MKTAG( 'm', 'p', '4' ,'a') },
+    // / MEANX
     { AV_CODEC_ID_MP3,             0x6D730055                },
     { AV_CODEC_ID_NELLYMOSER,      MKTAG('n', 'm', 'o', 's') }, /* Flash Media Server */
     { AV_CODEC_ID_PCM_ALAW,        MKTAG('a', 'l', 'a', 'w') },
