From 3f26d68aecb1cec054cde548e341ffaf82fa2748 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sun, 6 Feb 2005 18:43:06 +0000
Subject: [PATCH] emulate (idiotic) MS behavior for inconsistant dimensions

Originally committed as revision 3940 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/h263.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/h263.c b/libavcodec/h263.c
index 4adc362c38..ad496344b9 100644
--- a/libavcodec/h263.c
+++ b/libavcodec/h263.c
@@ -5538,7 +5538,7 @@ static int decode_vol_header(MpegEncContext *s, GetBitContext *gb){
             skip_bits1(gb);   /* marker */
             height = get_bits(gb, 13);
             skip_bits1(gb);   /* marker */
-            if(width && height){ /* they should be non zero but who knows ... */
+            if(width && height && !(s->width && s->avctx->codec_tag == ff_get_fourcc("MP4S"))){ /* they should be non zero but who knows ... */
                 s->width = width;
                 s->height = height;
 //                printf("width/height: %d %d\n", width, height);