@@ -547,6 +547,10 @@ static int rv10_decode_packet(AVCodecContext *avctx,

             return -1;

     }

+    if(s->pict_type == B_TYPE){ //FIXME remove after cleaning mottion_val indexing

+        memset(s->current_picture.motion_val[0], 0, sizeof(int16_t)*2*(s->mb_width*2+2)*(s->mb_height*2+2));

+    }

+

 #ifdef DEBUG

     printf("qscale=%d\n", s->qscale);

 #endif

@@ -575,7 +579,7 @@ static int rv10_decode_packet(AVCodecContext *avctx,

     s->rv10_first_dc_coded[0] = 0;

     s->rv10_first_dc_coded[1] = 0;

     s->rv10_first_dc_coded[2] = 0;

-

+//printf("%d %X %X\n", s->pict_type, s->current_picture.motion_val[0], s->current_picture.motion_val[1]);

     s->block_wrap[0]=

     s->block_wrap[1]=

     s->block_wrap[2]=

@@ -600,7 +604,8 @@ static int rv10_decode_packet(AVCodecContext *avctx,

             av_log(s->avctx, AV_LOG_ERROR, "ERROR at MB %d %d\n", s->mb_x, s->mb_y);

             return -1;

         }

-        ff_h263_update_motion_val(s);

+        if(s->pict_type != B_TYPE)

+            ff_h263_update_motion_val(s);

         MPV_decode_mb(s, s->block);

         if(s->loop_filter)

             ff_h263_loop_filter(s);

@@ -635,7 +640,7 @@ static int rv10_decode_frame(AVCodecContext *avctx,

         *data_size = 0;

         return 0;

     }

-    

+

     if(avctx->slice_count){

         for(i=0; i<avctx->slice_count; i++){

             int offset= avctx->slice_offset[i];