diff --git a/libavformat/isom.c b/libavformat/isom.c
index 19d629110f..b3f3f95ca0 100644
--- a/libavformat/isom.c
+++ b/libavformat/isom.c
@@ -33,6 +33,7 @@ const AVCodecTag ff_mp4_obj_type[] = {
     { AV_CODEC_ID_MOV_TEXT    , 0x08 },
     { AV_CODEC_ID_MPEG4       , 0x20 },
     { AV_CODEC_ID_H264        , 0x21 },
+    { AV_CODEC_ID_HEVC        , 0x23 },
     { AV_CODEC_ID_AAC         , 0x40 },
     { AV_CODEC_ID_MP4ALS      , 0x40 }, /* 14496-3 ALS */
     { AV_CODEC_ID_MPEG2VIDEO  , 0x61 }, /* MPEG2 Main */
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 6218259664..2ae3475c17 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -752,6 +752,7 @@ static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
         return 0;
 
     if      (track->enc->codec_id == AV_CODEC_ID_H264)      tag = MKTAG('a','v','c','1');
+    else if (track->enc->codec_id == AV_CODEC_ID_HEVC)      tag = MKTAG('h','e','v','1');
     else if (track->enc->codec_id == AV_CODEC_ID_AC3)       tag = MKTAG('a','c','-','3');
     else if (track->enc->codec_id == AV_CODEC_ID_DIRAC)     tag = MKTAG('d','r','a','c');
     else if (track->enc->codec_id == AV_CODEC_ID_MOV_TEXT)  tag = MKTAG('t','x','3','g');