1 files changed, 6 insertions, 0 deletions
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 9d1327575b..872050a74f 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -928,6 +928,12 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
                "Packets are not in the proper order with respect to DTS\n");
         return AVERROR(EINVAL);
     }
+    if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) {
+        if (pkt->pts == AV_NOPTS_VALUE) {
+            av_log(s, AV_LOG_ERROR, "Packet is missing PTS\n");
+            return AVERROR(EINVAL);
+        }
+    }
 
     ts = pkt->dts;