From c80a816142699dea9cf9fa66689a7838a487ed7e Mon Sep 17 00:00:00 2001
From: Rémi Denis-Courmont <remi@remlab.net>
Date: Wed, 8 Oct 2014 20:37:01 +0300
Subject: h263dec: call get_format() on resolution changes

Fail safe if the pixel format changes.
---
 libavcodec/h263dec.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'libavcodec/h263dec.c')

diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
index 29634b0e9d..31e014a9c7 100644
--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -513,6 +513,12 @@ int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
 
         if ((ret = ff_mpv_common_frame_size_change(s)))
             return ret;
+
+        if (avctx->pix_fmt != h263_get_format(avctx)) {
+            av_log(avctx, AV_LOG_ERROR, "format change not supported\n");
+            avctx->pix_fmt = AV_PIX_FMT_NONE;
+            return AVERROR_UNKNOWN;
+        }
     }
 
     if (s->codec_id == AV_CODEC_ID_H263  ||
-- 
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