fix mpeg2 chroma_420_type

Originally committed as revision 4274 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 1 insertions, 1 deletions

diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 38846b860d..e507a44549 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -468,8 +468,8 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
         put_bits(&s->pb, 1, s->intra_vlc_format);
         put_bits(&s->pb, 1, s->alternate_scan);
         put_bits(&s->pb, 1, s->repeat_first_field);
-        put_bits(&s->pb, 1, s->chroma_420_type=1);
         s->progressive_frame = s->progressive_sequence;
+        put_bits(&s->pb, 1, s->chroma_420_type=s->progressive_frame);
         put_bits(&s->pb, 1, s->progressive_frame);
         put_bits(&s->pb, 1, 0); //composite_display_flag
     }