diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c
index 165e4449c7..dfd7461d18 100644
--- a/libavformat/rtpenc.c
+++ b/libavformat/rtpenc.c
@@ -465,7 +465,7 @@ AVOutputFormat ff_rtp_muxer = {
     .long_name         = NULL_IF_CONFIG_SMALL("RTP output format"),
     .priv_data_size    = sizeof(RTPMuxContext),
     .audio_codec       = CODEC_ID_PCM_MULAW,
-    .video_codec       = CODEC_ID_NONE,
+    .video_codec       = CODEC_ID_MPEG4,
     .write_header      = rtp_write_header,
     .write_packet      = rtp_write_packet,
     .write_trailer     = rtp_write_trailer,