From b180d9fe99a2b681d5b2005e31ab13912a752d4b Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Wed, 5 Dec 2007 11:36:06 +0000
Subject: [PATCH] fix decoding of the first frame of gray.mov

Originally committed as revision 11169 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/mjpegbdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/mjpegbdec.c b/libavcodec/mjpegbdec.c
index 7056bd2b28..93f6923cd5 100644
--- a/libavcodec/mjpegbdec.c
+++ b/libavcodec/mjpegbdec.c
@@ -109,7 +109,7 @@ read_header:
     if (s->interlaced) {
         s->bottom_field ^= 1;
         /* if not bottom field, do not output image yet */
-        if (s->bottom_field && second_field_offs)
+        if (s->bottom_field != s->interlace_polarity && second_field_offs)
         {
             buf_ptr = buf + second_field_offs;
             second_field_offs = 0;