diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index 61fdd09f7a..c415078177 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -487,6 +487,10 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
         /* write optional descriptors here */
         switch (st->codecpar->codec_type) {
         case AVMEDIA_TYPE_AUDIO:
+            if (codec_id == AV_CODEC_ID_AC3)
+                put_registration_descriptor(&q, MKTAG('A', 'C', '-', '3'));
+            if (codec_id == AV_CODEC_ID_EAC3)
+                put_registration_descriptor(&q, MKTAG('E', 'A', 'C', '3'));
             if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
                 if (codec_id == AV_CODEC_ID_AC3) {
                     DVBAC3Descriptor *dvb_ac3_desc = ts_st->dvb_ac3_desc;