diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c
index bdbe411192..e4ef0fc92b 100644
--- a/libavformat/rtpenc.c
+++ b/libavformat/rtpenc.c
@@ -33,6 +33,7 @@
 static const AVOption options[] = {
     FF_RTP_FLAG_OPTS(RTPMuxContext, flags)
     { "payload_type", "Specify RTP payload type", offsetof(RTPMuxContext, payload_type), AV_OPT_TYPE_INT, {.dbl = -1 }, -1, 127, AV_OPT_FLAG_ENCODING_PARAM },
+    { "max_packet_size", "Max packet size", offsetof(RTPMuxContext, max_packet_size), AV_OPT_TYPE_INT, {.dbl = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
     { NULL },
 };
 
@@ -109,7 +110,12 @@ static int rtp_write_header(AVFormatContext *s1)
         s->first_rtcp_ntp_time = (s1->start_time_realtime / 1000) * 1000 +
                                  NTP_OFFSET_US;
 
-    s->max_packet_size = s1->pb->max_packet_size;
+    if (s->max_packet_size) {
+        if (s1->pb->max_packet_size)
+            s->max_packet_size = FFMIN(s->max_payload_size,
+                                       s1->pb->max_packet_size);
+    } else
+        s->max_packet_size = s1->pb->max_packet_size;
     if (s->max_packet_size <= 12) {
         av_log(s1, AV_LOG_ERROR, "Max packet size %d too low\n", s->max_packet_size);
         return AVERROR(EIO);