partial revert of 01d3ebaf

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

libavcodec/utils.c

@@ -746,6 +746,8 @@ int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
 
             if(!avctx->has_b_frames){
             picture->pkt_pos= avpkt->pos;
+            }
+            //FIXME these should be under if(!avctx->has_b_frames)
             if (!picture->sample_aspect_ratio.num)
                 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
             if (!picture->width)
@@ -755,7 +757,6 @@ int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
             if (picture->format == PIX_FMT_NONE)
                 picture->format = avctx->pix_fmt;
         }
-        }
 
         emms_c(); //needed to avoid an emms_c() call before every return;