diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index 8349840c96..c153cac88b 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -76,7 +76,8 @@
 
 #define COMMON_OPTS() \
     { "reorder_queue_size", "set number of packets to buffer for handling of reordered packets", OFFSET(reordering_queue_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC }, \
-    { "buffer_size",        "Underlying protocol send/receive buffer size",                  OFFSET(buffer_size),           AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC|ENC } \
+    { "buffer_size",        "Underlying protocol send/receive buffer size",                  OFFSET(buffer_size),           AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC|ENC }, \
+    { "pkt_size",           "Underlying protocol send packet size",                          OFFSET(pkt_size),              AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC } \
 
 
 const AVOption ff_rtsp_options[] = {
@@ -132,6 +133,8 @@ static AVDictionary *map_to_opts(RTSPState *rt)
 
     snprintf(buf, sizeof(buf), "%d", rt->buffer_size);
     av_dict_set(&opts, "buffer_size", buf, 0);
+    snprintf(buf, sizeof(buf), "%d", rt->pkt_size);
+    av_dict_set(&opts, "pkt_size", buf, 0);
 
     return opts;
 }
diff --git a/libavformat/rtsp.h b/libavformat/rtsp.h
index b49278fc20..54a9a30c16 100644
--- a/libavformat/rtsp.h
+++ b/libavformat/rtsp.h
@@ -410,6 +410,7 @@ typedef struct RTSPState {
 
     char default_lang[4];
     int buffer_size;
+    int pkt_size;
 } RTSPState;
 
 #define RTSP_FLAG_FILTER_SRC  0x1    /**< Filter incoming UDP packets -