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-rw-r--r--libavformat/rtsp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index b9416d2606..84b912f7f2 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -827,7 +827,8 @@ int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
if (!rtsp_st->transport_priv) {
return AVERROR(ENOMEM);
- } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP) {
+ } else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP &&
+ s->iformat) {
RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
rtpctx->ssrc = rtsp_st->ssrc;
if (rtsp_st->dynamic_handler) {