From cbe43e62c9ac7d4aefdc13476f6f691bd626525f Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sun, 9 Dec 2012 23:34:32 +0100
Subject: [PATCH] ffserver: set oformat

Fix Ticket1986

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 ffserver.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ffserver.c b/ffserver.c
index 3af481ddde..d8627bd26f 100644
--- a/ffserver.c
+++ b/ffserver.c
@@ -2961,12 +2961,14 @@ static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
 {
     AVFormatContext *avc;
     AVStream *avs = NULL;
+    AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
     int i;
 
     avc =  avformat_alloc_context();
-    if (avc == NULL) {
+    if (avc == NULL || !rtp_format) {
         return -1;
     }
+    avc->oformat = rtp_format;
     av_dict_set(&avc->metadata, "title",
                stream->title[0] ? stream->title : "No Title", 0);
     avc->nb_streams = stream->nb_streams;