From a92f8edf0c51781e152651cce2e753ad6e359eb2 Mon Sep 17 00:00:00 2001
From: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Date: Thu, 20 Oct 2016 22:51:55 +0200
Subject: [PATCH] mpeg12dec: unref discarded picture from extradata

Otherwise another frame gets referenced into picture, triggering an assert
(from commit 13aae8) in av_frame_ref.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
---
 libavcodec/mpeg12dec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index 44f7b61e46..ac8160daff 100644
--- a/libavcodec/mpeg12dec.c
+++ b/libavcodec/mpeg12dec.c
@@ -2808,6 +2808,7 @@ static int mpeg_decode_frame(AVCodecContext *avctx, void *data,
                             avctx->extradata, avctx->extradata_size);
         if (*got_output) {
             av_log(avctx, AV_LOG_ERROR, "picture in extradata\n");
+            av_frame_unref(picture);
             *got_output = 0;
         }
         s->extradata_decoded = 1;