[FFmpeg-cvslog] h263dec: Fix regression / crash with lowres.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Thu Dec 15 04:59:21 2011 +0100| [21270cffaeab2f67a613907516b2b0cd6c9eacf4] | committer: Michael Niedermayer

h263dec: Fix regression / crash with lowres.
Fixes Ticket757
Bug Found by: ami_stuff

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=21270cffaeab2f67a613907516b2b0cd6c9eacf4
---

 libavcodec/mpegvideo.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index bb57bb1..98a771c 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -1232,8 +1232,8 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
                 return -1;
 
             if(s->codec_id == CODEC_ID_FLV1 || s->codec_id == CODEC_ID_H263){
-                for(i=0; i<s->height; i++)
-                    memset(s->last_picture_ptr->f.data[0] + s->last_picture_ptr->f.linesize[0]*i, 16, s->width);
+                for(i=0; i<avctx->height; i++)
+                    memset(s->last_picture_ptr->f.data[0] + s->last_picture_ptr->f.linesize[0]*i, 16, avctx->width);
             }
 
             ff_thread_report_progress((AVFrame*)s->last_picture_ptr, INT_MAX, 0);