libavcodec/svq3.c:495: error: Buffer Overrun L1
  Offset added: 16 Size: 4.

libavcodec/svq3.c:434:1: <Length trace>
432. }
433. 
434. static int svq3_decode_mb(H264Context *h, unsigned int mb_type)
     ^
435. {
436.     int i, j, k, m, dir, mode;

libavcodec/svq3.c:434:1: Parameter `h->mv_cache[*][*][*]`
432. }
433. 
434. static int svq3_decode_mb(H264Context *h, unsigned int mb_type)
     ^
435. {
436.     int i, j, k, m, dir, mode;

libavcodec/svq3.c:495:17: Array access: Offset added: 16 Size: 4
493.             }
494.             if (s->mb_y > 0) {
495.                 memcpy(h->mv_cache[m][scan8[0] - 1*8], s->current_picture.motion_val[m][b_xy - h->b_stride], 4*2*sizeof(int16_t));
                     ^
496.                 memset(&h->ref_cache[m][scan8[0] - 1*8], (h->intra4x4_pred_mode[mb_xy - s->mb_stride][4] == -1) ? PART_NOT_AVAILABLE : 1, 4);
497. 
