fix decoding of the first frame of gray.mov

Originally committed as revision 11169 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago · b180d9fe99
parent cf653d0811
commit b180d9fe99
1 changed files with 1 additions and 1 deletions
--- 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;